/* ============================================================
   RITUO TEACHER · Design tokens
   ============================================================ */
:root {
  /* Base */
  --bg-0:        #06080c;
  --bg-1:        #0b1016;
  --bg-2:        #10161f;
  --bg-3:        #161e2a;
  --bg-4:        #1c2533;
  --line:        #1f2a39;
  --line-soft:   #243042;
  --line-strong: #2e3b50;

  /* Text */
  --text-0: #f1f4f9;
  --text-1: #c2cad6;
  --text-2: #8c95a5;
  --text-3: #5c6678;

  /* RITUO + NUMMAXAI accents */
  --rituo-red:   #C0001A;
  --rituo-teal:  #27D6C0;
  --nummax-cyan: #00d4ff;
  --warn:        #f5a524;
  --ok:          #16d39a;

  /* Languages */
  --html:      #E34F26;
  --html-2:    #F06529;
  --css:       #1572B6;
  --css-2:     #2965F1;
  --js:        #F7DF1E;
  --js-2:      #F0DB4F;

  /* VS Code Dark+ */
  --vs-bg:      #1e1e1e;
  --vs-line:    #2d2d2d;
  --vs-text:    #d4d4d4;
  --vs-tag:     #569CD6;
  --vs-attr:    #9CDCFE;
  --vs-string:  #CE9178;
  --vs-comment: #6A9955;
  --vs-keyword: #C586C0;
  --vs-fn:      #DCDCAA;
  --vs-num:     #B5CEA8;
  --vs-prop:    #9CDCFE;
  --vs-value:   #CE9178;
  --vs-selector:#D7BA7D;
  --vs-bool:    #569CD6;

  /* Typography */
  --font-display: 'TTFors', 'Montserrat', system-ui, sans-serif;
  --font-body:    'Montserrat', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  /* Surfaces */
  --shadow-soft: 0 1px 0 rgba(255,255,255,0.03), 0 8px 24px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 0 1px rgba(39,214,192,0.18), 0 12px 40px rgba(39,214,192,0.10);

  /* Radii */
  --r-1: 6px;
  --r-2: 10px;
  --r-3: 14px;
  --r-4: 20px;
}

/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: var(--font-body);
  color: var(--text-0);
  background: var(--bg-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}
button { font-family: inherit; font-size: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: inherit; }

/* atmospheric background */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(900px 600px at 12% -10%, rgba(39,214,192,0.10), transparent 60%),
    radial-gradient(800px 600px at 100% 110%, rgba(0,212,255,0.08), transparent 60%),
    radial-gradient(700px 500px at 50% 50%, rgba(192,0,26,0.05), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 56px 56px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 30%, transparent 100%);
}

::selection { background: rgba(39,214,192,0.35); color: #fff; }

/* Scrollbars */
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--line-soft); border-radius: 8px; }
*::-webkit-scrollbar-thumb:hover { background: var(--line-strong); }

/* ============================================================
   Layout
   ============================================================ */
.app {
  display: grid;
  grid-template-columns: 300px 1fr 380px;
  height: 100vh;
  position: relative;
  z-index: 1;
}

@media (max-width: 1180px) {
  .app { grid-template-columns: 280px 1fr; }
  .chat { display: none; }
}
@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}
.sidebar::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 1px; height: 100%;
  background: linear-gradient(180deg, transparent, rgba(39,214,192,0.4), transparent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 18px 18px;
  border-bottom: 1px solid var(--line);
}
.brand-logo {
  width: 32px; height: 32px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 14px var(--c-current, #E34F26));
  transition: filter 0.4s ease;
}
.brand-logo #logo-bg {
  transition: fill 0.4s ease;
}
.brand-logo .orbit-dot {
  animation: rituo-orbit 2.8s linear infinite;
  transform-origin: center;
}
@keyframes rituo-orbit {
  from { transform: rotate(0deg)   translateX(55px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(55px) rotate(-360deg); }
}
.brand-text {
  display: inline-flex;
  align-items: baseline;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 30px;
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
}
.brand-name {
  color: var(--text-0);
  text-transform: lowercase;
}
.brand-name em {
  font-style: normal;
  font-weight: 800;
  color: var(--c-current, #E34F26);
  text-transform: lowercase;
  transition: color 0.4s ease;
}

.search {
  margin: 14px 18px 4px;
  padding: 10px 12px 10px 36px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  color: var(--text-0);
  outline: none;
  font-size: 13px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%238c95a5' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 12px center;
  transition: border-color 0.15s, background-color 0.15s;
}
.search:focus { border-color: var(--rituo-teal); background: var(--bg-3); }
.search::placeholder { color: var(--text-3); }

.nav-sections {
  flex: 1;
  min-height: 0;             /* CRÍTICO: sin esto, flex:1 no se encoge bajo el tamaño del contenido y overflow-y:auto NO funciona. Default es min-height:auto. */
  overflow-y: auto;
  padding: 8px 10px 64px;    /* 64px bottom: garantiza que la última lección NUNCA quede pegada al footer ni recortada */
  /* Sin display:flex acá: era solo para el gap entre sections, lo reemplazamos
     por margin-bottom en .nav-section. Tener flex container + scroll + flex-direction:column
     puede causar que los flex items no escalen bien y se recorten al fondo. */
  scrollbar-width: thin;
  scrollbar-color: rgba(192,0,26,0.4) transparent;
}
.nav-sections::-webkit-scrollbar { width: 6px; }
.nav-sections::-webkit-scrollbar-thumb { background: rgba(192,0,26,0.4); border-radius: 3px; }
.nav-sections::-webkit-scrollbar-thumb:hover { background: rgba(192,0,26,0.7); }
.nav-sections::-webkit-scrollbar-track { background: transparent; }

.nav-section {
  border-radius: var(--r-2);
  overflow: hidden;
  margin-bottom: 4px;        /* reemplaza el `gap: 4px` que tenía .nav-sections cuando era flex */
  flex-shrink: 0;            /* defensivo: jamás se encoja por presión de flexbox */
}

.section-header {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-2);
  color: var(--text-1);
  text-align: left;
  font-weight: 600;
  font-size: 13.5px;
  position: relative;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.section-header:hover { background: var(--bg-2); color: var(--text-0); }
.section-header[aria-expanded="true"] {
  background: var(--bg-2);
  border-color: var(--line);
  color: var(--text-0);
}
.section-header[aria-expanded="true"]::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 3px;
  background: var(--c, var(--rituo-teal));
  border-radius: 2px;
  box-shadow: 0 0 12px var(--c, var(--rituo-teal));
}
.section-icon {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.section-icon svg {
  width: 100%; height: 100%;
  display: block;
}
.section-name { flex: 1; font-family: var(--font-display); letter-spacing: 0.4px; }
.section-progress {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-3);
}
.section-chevron {
  width: 14px; height: 14px;
  color: var(--text-3);
  transition: transform 0.2s;
}
.section-header[aria-expanded="true"] .section-chevron { transform: rotate(90deg); }

.lessons {
  list-style: none;
  margin: 4px 0 6px;
  padding: 4px 0 0;
  max-height: 0;
  overflow-y: hidden;
  transition: max-height 0.3s ease;
}
.section-header[aria-expanded="true"] + .lessons {
  /* Sin overflow-y:auto: el scroll lo hace .nav-sections (padre).
     max-height alto pero finito para que la transición de 0.3s siga
     andando. 5000px aguanta 150 lecciones tranquilo (cada item ~32px). */
  max-height: 5000px;
  overflow-x: hidden;
  padding-bottom: 8px;
}

.lesson-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px 7px 26px;
  margin: 1px 6px;
  border-radius: 6px;
  color: var(--text-2);
  font-size: 12.5px;
  cursor: pointer;
  border-left: 2px solid transparent;
  transition: all 0.12s;
  position: relative;
}
.lesson-item:hover { background: var(--bg-2); color: var(--text-1); }
.lesson-item.active {
  background: var(--bg-3);
  color: var(--text-0);
  border-left-color: var(--c, var(--rituo-teal));
  box-shadow: inset 0 0 0 1px var(--line);
}
.lesson-item.locked { opacity: 0.5; }
.lesson-item.locked:hover { background: var(--bg-2); }
.lesson-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-3);
  width: 22px;
  flex-shrink: 0;
}
.lesson-item.active .lesson-num { color: var(--c, var(--rituo-teal)); }
.lesson-name { flex: 1; line-height: 1.35; }
.lesson-status { font-size: 10px; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; }
.lesson-status.is-done { color: #32BA7C; }
.lesson-status.is-done svg { display: block; filter: drop-shadow(0 0 4px rgba(50,186,124,0.45)); }

.sidebar-foot {
  padding: 12px 18px 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.foot-row {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; color: var(--text-3);
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}
.foot-bar {
  height: 4px;
  background: var(--bg-3);
  border-radius: 2px;
  overflow: hidden;
}
.foot-bar > span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--rituo-teal), var(--nummax-cyan));
  width: 1%;
  transition: width 0.4s;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.content {
  background: var(--bg-0);
  overflow-y: auto;
  position: relative;
}

.content-head {
  position: sticky; top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: rgba(6,8,12,0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.crumb {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; color: var(--text-2);
}
.crumb .lang-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--c-current, var(--rituo-teal));
  letter-spacing: 0.5px;
}
.crumb .lang-pill::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-current, var(--rituo-teal));
  box-shadow: 0 0 8px var(--c-current, var(--rituo-teal));
}
.crumb .sep { color: var(--text-3); }
.crumb .lesson-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-1);
}

.head-actions { display: flex; gap: 8px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  color: var(--text-1);
  font-size: 12.5px;
  font-weight: 500;
  transition: all 0.15s;
}
.btn:hover { background: var(--bg-3); color: var(--text-0); border-color: var(--line-strong); }
.btn .ico {
  width: 14px; height: 14px;
  display: inline-flex; align-items: center; justify-content: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--rituo-teal), var(--nummax-cyan));
  border-color: transparent;
  color: #061018;
  font-weight: 700;
  box-shadow: 0 0 0 1px rgba(39,214,192,0.3), 0 6px 20px rgba(39,214,192,0.2);
}
.btn-primary:hover {
  box-shadow: 0 0 0 1px rgba(39,214,192,0.5), 0 8px 28px rgba(39,214,192,0.35);
  color: #061018;
  transform: translateY(-1px);
}
.btn.is-active {
  background: var(--c-current, var(--rituo-teal));
  color: #0b1016;
  border-color: transparent;
  box-shadow: 0 0 14px rgba(39,214,192,0.45);
}
.btn-ghost { background: transparent; }
.btn-icon { padding: 8px; }

/* Lesson */
.lesson {
  max-width: 900px;
  margin: 0 auto;
  padding: 36px 28px 80px;
}

.lesson-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--c-current, var(--rituo-teal));
  margin-bottom: 8px;
}
.lesson-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 38px;
  line-height: 1.1;
  letter-spacing: -0.5px;
  margin: 0 0 18px;
  color: var(--text-0);
  position: relative;
}
.lesson-title::after {
  content: '';
  display: block;
  width: 60px; height: 3px;
  background: var(--c-current, var(--rituo-teal));
  border-radius: 2px;
  margin-top: 18px;
  box-shadow: 0 0 12px var(--c-current, var(--rituo-teal));
}

.lesson-body {
  color: var(--text-1);
  font-size: 15.5px;
  line-height: 1.7;
}
.lesson-body p { margin: 0 0 16px; }
.lesson-body strong { color: var(--text-0); font-weight: 600; }
.lesson-body em { color: var(--rituo-teal); font-style: normal; font-weight: 500; }
.lesson-body code:not(pre code) {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 6px;
  color: var(--vs-attr);
}
.lesson-body ul {
  margin: 8px 0 18px;
  padding-left: 0;
  list-style: none;
}
.lesson-body ul li {
  position: relative;
  padding-left: 22px;
  margin: 6px 0;
}
.lesson-body ul li::before {
  content: '';
  position: absolute;
  left: 4px; top: 11px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-current, var(--rituo-teal));
  box-shadow: 0 0 6px var(--c-current, var(--rituo-teal));
}
.lesson-body h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-0);
  margin: 28px 0 10px;
}

/* Code blocks dentro del body de la lección — para que no queden
   pegados al borde y se vean prolijos en HTML, CSS y JS por igual. */
.lesson-body pre {
  background: var(--vs-bg, #0d1117);
  border: 1px solid var(--vs-line, #1f2937);
  border-left: 3px solid var(--c-current, var(--rituo-teal));
  border-radius: var(--r-3, 10px);
  padding: 22px 28px;
  margin: 22px 0 26px;
  overflow-x: auto;
  box-shadow: var(--shadow-soft, 0 4px 16px rgba(0,0,0,0.25));
}
.lesson-body pre code {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-1);
  background: transparent;
  border: none;
  padding: 0;
  white-space: pre;
  display: block;
}
/* En pantallas chicas dejamos un poquito menos pero igual con aire */
@media (max-width: 720px) {
  .lesson-body pre { padding: 18px 20px; }
}

/* code block */
.codeblock {
  margin: 22px 0;
  background: var(--vs-bg);
  border: 1px solid var(--vs-line);
  border-radius: var(--r-3);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  position: relative;
}
.codeblock-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px 8px 16px;
  background: #252526;
  border-bottom: 1px solid var(--vs-line);
}
.codeblock-head .traffic { display: flex; gap: 6px; }
.codeblock-head .traffic span {
  width: 11px; height: 11px; border-radius: 50%;
}
.codeblock-head .traffic span:nth-child(1) { background: #ff5f56; }
.codeblock-head .traffic span:nth-child(2) { background: #ffbd2e; }
.codeblock-head .traffic span:nth-child(3) { background: #27c93f; }
.codeblock-head .file {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-2);
  flex: 1;
  text-align: center;
}
.codeblock-head .copy {
  background: transparent;
  border: 1px solid var(--vs-line);
  color: var(--text-2);
  padding: 4px 10px;
  border-radius: 5px;
  font-size: 11px;
  font-family: var(--font-mono);
}
.codeblock-head .copy:hover { color: var(--rituo-teal); border-color: var(--rituo-teal); }

.codeblock pre {
  margin: 0;
  padding: 18px 18px 18px 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--vs-text);
  overflow-x: auto;
  display: flex;
  background: var(--vs-bg);
}
.codeblock .gutter {
  user-select: none;
  text-align: right;
  padding: 0 14px 0 18px;
  color: #5c5c5c;
  font-size: 12.5px;
  border-right: 1px solid var(--vs-line);
  margin-right: 16px;
}
.codeblock code { white-space: pre; display: block; min-width: 0; }

/* Syntax highlight tokens (VS Code Dark+) */
.t-tag      { color: var(--vs-tag); }
.t-attr     { color: var(--vs-attr); }
.t-string   { color: var(--vs-string); }
.t-comment  { color: var(--vs-comment); font-style: italic; }
.t-keyword  { color: var(--vs-keyword); }
.t-fn       { color: var(--vs-fn); }
.t-num      { color: var(--vs-num); }
.t-prop     { color: var(--vs-prop); }
.t-value    { color: var(--vs-value); }
.t-selector { color: var(--vs-selector); }
.t-bool     { color: var(--vs-bool); }
.t-punct    { color: #d4d4d4; }
.t-bracket  { color: #ffd700; }
.t-text     { color: #d4d4d4; }

/* Playground */
.playground {
  margin: 28px 0;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  overflow: hidden;
}
.playground-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
}
.playground-head h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  color: var(--text-0);
  display: flex; align-items: center; gap: 8px;
}
.playground-head h3::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px var(--ok);
}
.playground-head .run-btn {
  background: var(--rituo-teal);
  border: none;
  color: #0b1016;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 12px;
  display: flex; align-items: center; gap: 6px;
}
.playground-head .run-btn:hover { background: #34e8d2; }

/* Playground vertical: visor del navegador ARRIBA grande, código ABAJO grande. */
.play-grid {
  display: flex;
  flex-direction: column;
  min-height: 720px;
}

.play-preview {
  background: white;
  border-bottom: 1px solid var(--line);
  flex: 1 1 auto;
  min-height: 420px;
}
.play-preview iframe { width: 100%; height: 100%; min-height: 420px; border: none; display: block; }

.play-edit {
  position: relative;
  background: var(--vs-bg);
  flex: 0 1 auto;
  min-height: 280px;
  max-height: 480px;
}
.play-edit textarea {
  width: 100%;
  height: 100%;
  min-height: 280px;
  padding: 16px 16px 16px 20px;
  background: transparent;
  border: none;
  outline: none;
  resize: vertical;
  color: var(--vs-text);
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
}

/* Concepts pills */
.concepts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}
.concept-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-1);
}
.concept-pill::before {
  content: '#';
  color: var(--c-current, var(--rituo-teal));
  font-weight: 700;
}

/* Quiz */
.quiz {
  margin: 28px 0;
  padding: 22px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  border-left: 3px solid var(--c-current, var(--rituo-teal));
}
.quiz h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 16px;
  color: var(--text-0);
}
.quiz p { margin: 0 0 14px; color: var(--text-1); }
.quiz-opts { display: flex; flex-direction: column; gap: 8px; }
.quiz-opt {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text-1);
  font-size: 13.5px;
  text-align: left;
  width: 100%;
}
.quiz-opt:hover { border-color: var(--c-current, var(--rituo-teal)); color: var(--text-0); }
.quiz-opt.is-correct { border-color: var(--ok); background: rgba(22,211,154,0.08); color: var(--ok); }
.quiz-opt.is-wrong { border-color: var(--rituo-red); background: rgba(192,0,26,0.08); color: #ff7782; }
.quiz-opt .key {
  width: 22px; height: 22px;
  display: grid; place-items: center;
  border-radius: 5px;
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
}
.quiz-feedback {
  margin-top: 14px;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  background: var(--bg-3);
  color: var(--text-1);
  display: none;
}
.quiz-feedback.show { display: block; }

/* Footer nav */
.content-foot {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 28px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* Locked overlay */
.locked-card {
  max-width: 600px;
  margin: 80px auto;
  padding: 40px 32px;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: var(--r-4);
  text-align: center;
  box-shadow: var(--shadow-soft);
}
.locked-card .icon {
  width: 64px; height: 64px;
  margin: 0 auto 18px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: var(--bg-3);
  border: 1px solid var(--line);
  font-size: 28px;
}
.locked-card h2 {
  font-family: var(--font-display);
  margin: 0 0 8px;
  font-size: 22px;
}
.locked-card p { color: var(--text-2); margin: 0 0 20px; line-height: 1.6; }

/* ============================================================
   Wireframe Courses Shell
   Solo para paso1 / paso2. No cambia la estructura ni la lógica:
   mejora el bloque central, conceptos, quiz y footer fijo.
   ============================================================ */
body.course-wireframe {
  --wf-accent: var(--c-current, var(--rituo-teal));
  --wf-accent-rgb: 39,214,192;
  --wf-panel: rgba(12, 18, 25, 0.88);
  --wf-panel-2: rgba(14, 22, 33, 0.92);
  --wf-line: rgba(46, 59, 80, 0.92);
}
body.course-paso1 { --wf-accent-rgb: 16,185,129; }
body.course-paso2 { --wf-accent-rgb: 34,211,238; }

body.course-wireframe::before {
  background:
    radial-gradient(1100px 640px at 52% -8%, rgba(var(--wf-accent-rgb), 0.16), transparent 58%),
    radial-gradient(900px 680px at 100% 110%, rgba(var(--wf-accent-rgb), 0.08), transparent 60%),
    radial-gradient(780px 520px at 8% 20%, rgba(255,255,255,0.03), transparent 58%);
}
body.course-wireframe::after {
  opacity: 0.65;
  background-size: 48px 48px;
}

body.course-wireframe .content {
  background:
    linear-gradient(180deg, rgba(8, 11, 16, 0.94), rgba(6, 8, 12, 0.98)),
    radial-gradient(960px 540px at 50% 0%, rgba(var(--wf-accent-rgb), 0.08), transparent 62%);
}
body.course-wireframe .content-head {
  padding: 16px 28px;
  background: rgba(7, 10, 15, 0.78);
  border-bottom-color: rgba(var(--wf-accent-rgb), 0.18);
  box-shadow: 0 18px 42px rgba(0,0,0,0.24);
}
body.course-wireframe .crumb .lang-pill {
  background: rgba(var(--wf-accent-rgb), 0.08);
  border-color: rgba(var(--wf-accent-rgb), 0.28);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
}

body.course-wireframe .lesson {
  max-width: 980px;
  padding: 42px 28px 64px;
}
body.course-wireframe .lesson-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.2em;
  font-weight: 700;
}
body.course-wireframe .lesson-tag::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--wf-accent);
  box-shadow: 0 0 12px var(--wf-accent);
}
body.course-wireframe .lesson-title {
  font-size: 44px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
body.course-wireframe .lesson-title::after {
  width: 76px;
  height: 4px;
  margin-top: 20px;
}

body.course-wireframe .lesson-body {
  font-size: 15.8px;
  line-height: 1.78;
  color: var(--text-1);
}
body.course-wireframe .lesson-body p {
  margin: 0 0 18px;
}
body.course-wireframe .lesson-body .lead {
  font-size: 17px;
  color: var(--text-1);
  margin-bottom: 22px;
}
body.course-wireframe .lesson-body strong {
  color: var(--text-0);
  font-weight: 700;
}
body.course-wireframe .lesson-body em {
  color: var(--wf-accent);
  font-weight: 700;
}
body.course-wireframe .lesson-body h2,
body.course-wireframe .lesson-body h3,
body.course-wireframe .lesson > h3 {
  color: var(--text-0);
  letter-spacing: -0.02em;
}
body.course-wireframe .lesson-body h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  margin: 38px 0 10px;
}
body.course-wireframe .lesson-body h3,
body.course-wireframe .lesson > h3 {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--wf-accent);
  margin: 30px 0 14px;
}
body.course-wireframe .lesson-body ul,
body.course-wireframe .lesson-body ol {
  margin: 12px 0 22px;
  padding-left: 0;
  list-style: none;
}
body.course-wireframe .lesson-body li {
  position: relative;
  margin: 9px 0;
  padding-left: 24px;
}
body.course-wireframe .lesson-body ul li::before,
body.course-wireframe .lesson-body ol li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 11px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--wf-accent);
  box-shadow: 0 0 8px rgba(var(--wf-accent-rgb), 0.55);
}
body.course-wireframe .lesson-body figure {
  margin: 28px 0 10px;
  padding: 24px 24px 18px;
  background: linear-gradient(180deg, rgba(22,30,42,0.96), rgba(12,18,25,0.96));
  border: 1px solid rgba(var(--wf-accent-rgb), 0.16);
  border-radius: 18px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.34);
  overflow: hidden;
}
body.course-wireframe .lesson-body figcaption {
  margin-top: 12px;
  color: var(--text-2);
  font-size: 13px;
  text-align: center;
}
body.course-wireframe .lesson-body .kbd {
  font-family: var(--font-mono);
  background: rgba(21, 32, 51, 0.92);
  border: 1px solid rgba(var(--wf-accent-rgb), 0.16);
  border-radius: 7px;
  padding: 1px 8px;
  color: var(--wf-accent);
  font-size: 12px;
  font-weight: 700;
}
body.course-wireframe .lesson-body .tip,
body.course-wireframe .lesson-body .warn {
  margin: 24px 0;
  padding: 14px 18px;
  border-radius: 0 14px 14px 0;
  border-left: 3px solid var(--wf-accent);
  background: rgba(var(--wf-accent-rgb), 0.08);
  color: var(--text-1);
  font-size: 14.5px;
}
body.course-wireframe .lesson-body .warn {
  border-left-color: #f2557a;
  background: rgba(242, 85, 122, 0.08);
}
body.course-wireframe .lesson-body .tip b {
  color: var(--wf-accent);
}
body.course-wireframe .lesson-body .warn b {
  color: #f2557a;
}
body.course-wireframe .lesson-body .englishwrap {
  margin: 30px 0;
  border: 1px solid rgba(var(--wf-accent-rgb), 0.18);
  border-radius: 18px;
  background: linear-gradient(180deg, #0c1820, #0a131a);
  overflow: hidden;
  box-shadow: 0 22px 54px rgba(0,0,0,0.24);
}
body.course-wireframe .lesson-body .englishwrap > h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 16px 22px;
  border-bottom: 1px solid rgba(var(--wf-accent-rgb), 0.16);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--wf-accent);
}
body.course-wireframe .lesson-body .englishwrap > h3 .flag {
  background: var(--wf-accent);
  color: #04211e;
  border-radius: 6px;
  font-size: 11px;
  padding: 2px 7px;
  letter-spacing: 0.05em;
}
body.course-wireframe .lesson-body .terms {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(var(--wf-accent-rgb), 0.18);
}
body.course-wireframe .lesson-body .term {
  background: #0a131a;
  padding: 16px 22px;
}
body.course-wireframe .lesson-body .term .w {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-0);
}
body.course-wireframe .lesson-body .term .pron {
  font-family: var(--font-mono);
  color: var(--wf-accent);
  font-size: 13px;
  margin-left: 8px;
}
body.course-wireframe .lesson-body .term .lit {
  display: block;
  margin-top: 3px;
  color: var(--text-3);
  font-size: 12.5px;
}
body.course-wireframe .lesson-body .term .lit b {
  color: var(--text-2);
}
body.course-wireframe .lesson-body .term .mean {
  display: block;
  margin-top: 6px;
  color: var(--text-1);
  font-size: 14px;
}
body.course-wireframe .lesson-body .coach {
  margin: 34px 0;
  padding: 18px 18px 16px;
  border-radius: 20px;
  border: 1px solid rgba(var(--wf-accent-rgb), 0.18);
  background: linear-gradient(180deg, rgba(var(--wf-accent-rgb), 0.08), rgba(var(--wf-accent-rgb), 0.04));
  box-shadow: 0 20px 60px rgba(0,0,0,0.24);
}
body.course-wireframe .lesson-body .coach-head {
  margin-bottom: 14px;
  color: var(--wf-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
body.course-wireframe .lesson-body .coach-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
body.course-wireframe .lesson-body .coach-card {
  padding: 16px 16px 14px;
  border-radius: 16px;
  border: 1px solid rgba(var(--wf-accent-rgb), 0.12);
  background: rgba(6, 10, 16, 0.62);
}
body.course-wireframe .lesson-body .coach-card h3 {
  margin: 0 0 8px;
  color: var(--wf-strong);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
body.course-wireframe .lesson-body .coach-card p {
  margin: 0;
  color: #dde5ef;
  font-size: 14.2px;
}
body.course-wireframe .lesson-body pre,
body.course-wireframe .codeblock,
body.course-wireframe .playground,
body.course-wireframe .quiz {
  border-radius: 18px;
  border-color: rgba(var(--wf-accent-rgb), 0.14);
  box-shadow: 0 24px 60px rgba(0,0,0,0.28);
}
body.course-wireframe .lesson-body pre {
  border-left-width: 4px;
  background: linear-gradient(180deg, #111822, #0b1118);
}
body.course-wireframe .codeblock {
  margin-top: 28px;
  background: linear-gradient(180deg, #121926, #0c121a);
}
body.course-wireframe .codeblock-head,
body.course-wireframe .playground-head {
  background: rgba(16, 22, 31, 0.96);
  border-bottom-color: rgba(var(--wf-accent-rgb), 0.16);
}
body.course-wireframe .playground {
  background: linear-gradient(180deg, rgba(14,22,33,0.96), rgba(10,16,23,0.98));
}
body.course-wireframe .play-preview {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.98), rgba(245,247,250,0.98));
}
body.course-wireframe .play-edit {
  background: #10151d;
}

body.course-wireframe .concepts {
  gap: 10px;
  margin: 18px 0 30px;
}
body.course-wireframe .concept-pill {
  padding: 7px 14px;
  border-color: rgba(var(--wf-accent-rgb), 0.16);
  background: rgba(21, 32, 51, 0.9);
  color: var(--text-1);
}
body.course-wireframe .concept-pill::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--wf-accent);
  box-shadow: 0 0 8px rgba(var(--wf-accent-rgb), 0.5);
}

body.course-wireframe .quiz {
  background: linear-gradient(180deg, rgba(12,18,25,0.98), rgba(10,14,21,0.98));
  border-left: 1px solid rgba(var(--wf-accent-rgb), 0.14);
}
body.course-wireframe .quiz .quiz-q {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-0);
}
body.course-wireframe .quiz-opt,
body.course-wireframe .comp-opt {
  border-radius: 12px;
  background: rgba(16,22,31,0.92);
  border-color: rgba(var(--wf-accent-rgb), 0.12);
}
body.course-wireframe .quiz-opt:hover,
body.course-wireframe .comp-opt:hover {
  border-color: rgba(var(--wf-accent-rgb), 0.42);
  box-shadow: 0 12px 24px rgba(0,0,0,0.18);
}
body.course-wireframe .quiz-opt .key {
  border-radius: 999px;
  background: rgba(var(--wf-accent-rgb), 0.1);
  color: var(--wf-accent);
}
body.course-wireframe .quiz-feedback {
  background: rgba(21, 32, 51, 0.88);
  border: 1px solid rgba(var(--wf-accent-rgb), 0.14);
}

body.course-wireframe .comp-gate {
  background: linear-gradient(180deg, rgba(12,18,25,0.98), rgba(10,14,21,0.98));
  border: 1px solid rgba(var(--wf-accent-rgb), 0.14);
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.28);
}
body.course-wireframe .comp-gate h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: none;
  color: var(--text-0);
}
body.course-wireframe .comp-sub {
  color: var(--text-2);
}
body.course-wireframe .comp-opt.comp-on {
  border-color: rgba(var(--wf-accent-rgb), 0.52);
  background: rgba(var(--wf-accent-rgb), 0.1);
  color: var(--text-0);
}
body.course-wireframe .comp-opt.comp-on .comp-ico {
  color: var(--wf-accent);
}

body.course-wireframe .content-foot {
  max-width: 980px;
  padding-bottom: 42px;
  padding-top: 4px;
}
body.course-wireframe .content-foot .btn {
  min-height: 48px;
  padding: 11px 18px;
  border-radius: 14px;
  border-color: rgba(var(--wf-accent-rgb), 0.14);
  background: rgba(16,22,31,0.94);
}
body.course-wireframe .content-foot .btn:hover {
  border-color: rgba(var(--wf-accent-rgb), 0.34);
}
body.course-wireframe #btn-prev,
body.course-wireframe #btn-next {
  color: var(--text-1);
}
body.course-wireframe #btn-complete {
  border-color: rgba(var(--wf-accent-rgb), 0.22) !important;
  background: linear-gradient(135deg, rgba(var(--wf-accent-rgb), 0.18), rgba(var(--wf-accent-rgb), 0.1)) !important;
}
body.course-wireframe #btn-complete:hover {
  background: linear-gradient(135deg, var(--wf-accent), color-mix(in srgb, var(--wf-accent) 70%, white 30%)) !important;
  border-color: transparent !important;
}

body.course-wireframe .lesson-narrating {
  background: rgba(var(--wf-accent-rgb), 0.08);
  border-left-color: var(--wf-accent);
  border-radius: 10px;
}

@media (max-width: 720px) {
  body.course-wireframe .lesson {
    padding: 34px 18px 52px;
  }
  body.course-wireframe .lesson-title {
    font-size: 34px;
  }
  body.course-wireframe .content-head {
    padding: 12px 18px;
  }
  body.course-wireframe .lesson-body figure {
    padding: 18px 16px 14px;
  }
  body.course-wireframe .lesson-body .terms {
    grid-template-columns: 1fr;
  }
  body.course-wireframe .lesson-body .coach-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   CHAT (multi-agent)
   ============================================================ */
.chat {
  background: var(--bg-1);
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  /* Necesario para que el avatar flotante (position: absolute) se
     ancore al chat. */
  position: relative;
}
.chat-head {
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--line);
}
.chat-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  margin: 0 0 2px;
  display: flex; align-items: center; gap: 8px;
}
.chat-head h2 .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 8px var(--ok);
  animation: pulse 1.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.9); }
}
.chat-head p { margin: 0; font-size: 12px; color: var(--text-3); }

.agents {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.agent {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  font-size: 11.5px;
  font-weight: 500;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.15s;
}
.agent:hover { color: var(--text-0); }
.agent .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--ac, var(--rituo-teal));
  box-shadow: 0 0 6px var(--ac, var(--rituo-teal));
}
.agent.active {
  background: var(--bg-3);
  border-color: var(--ac, var(--rituo-teal));
  color: var(--text-0);
  box-shadow: 0 0 0 1px var(--ac, var(--rituo-teal));
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px 6px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.msg {
  display: flex;
  gap: 8px;
  animation: msg-in 0.3s ease;
}
@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
}
.msg.user { flex-direction: row-reverse; }
.msg-avatar {
  position: sticky;
  top: 14px;
  align-self: flex-start;
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
  background: transparent;
  /* color = color del agente; el SVG del robot lo toma con currentColor */
  color: var(--ac, var(--rituo-teal));
  overflow: visible;
  z-index: 5;
}
/* Robot del medio: encima del pulse/spinner */
.msg-avatar .msg-avatar-robot {
  position: relative;
  z-index: 2;
  display: block;
}
/* Pulse y spinner: un poquito más grandes que el avatar para
   verse alrededor del robot, sin pasarse. */
.msg-avatar .msg-avatar-pulse,
.msg-avatar .msg-avatar-spinner {
  position: absolute;
  inset: -8px;           /* sobresalen 8px en cada lado */
  width: calc(100% + 16px);
  height: calc(100% + 16px);
  z-index: 1;
  pointer-events: none;
  display: block;
}
/* Por defecto: idle → mostrar pulse, esconder spinner */
.msg-avatar .msg-avatar-spinner { display: none; }
/* Cuando el mensaje está streaming: ocultar pulse, mostrar spinner */
.msg.msg-streaming .msg-avatar .msg-avatar-pulse { display: none; }
.msg.msg-streaming .msg-avatar .msg-avatar-spinner { display: block; }
/* User: avatar redondo gris con texto "YO" */
.msg.user .msg-avatar {
  background: var(--bg-3);
  border: 1px solid var(--line);
  color: var(--text-1);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
}
.msg-bubble {
  /* Responsive: el bubble se adapta al ancho del chat (que ahora se
     puede agrandar/achicar con la manija). 50px es lo que ocupa el
     avatar + gap a la izquierda. */
  max-width: calc(100% - 50px);
  min-width: 0;
  flex: 0 1 auto;
  padding: 10px 13px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  border-top-left-radius: 4px;
  color: var(--text-1);
  font-size: 13px;
  line-height: 1.5;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
/* Code blocks dentro del bubble: scroll horizontal si son largos,
   no rompen el layout del chat. */
.msg-bubble pre {
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
  margin: 6px 0;
}
.msg-bubble pre code { white-space: pre; }
/* Inline code se ajusta y permite quebrar la línea si hace falta */
.msg-bubble code:not(pre code) { word-break: break-all; }
.msg.user .msg-bubble {
  border-radius: 12px;
  border-top-right-radius: 4px;
  border-top-left-radius: 12px;
  background: var(--bg-3);
  color: var(--text-0);
}
.msg-name {
  font-size: 11px;
  font-weight: 600;
  color: var(--ac, var(--rituo-teal));
  margin-bottom: 3px;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
}
.msg-bubble code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  background: var(--vs-bg);
  border: 1px solid var(--vs-line);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--vs-attr);
}

/* Sugerencias en una sola fila con scroll horizontal — no apila
   en líneas para arriba. Si no entran, se scrollean con la rueda
   o arrastrando. */
.suggestions {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  padding: 4px 14px 10px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  -webkit-overflow-scrolling: touch;
}
.suggestions::-webkit-scrollbar { height: 6px; }
.suggestions::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 3px;
}
.suggestions::-webkit-scrollbar-thumb:hover {
  background: var(--rituo-teal);
}
.suggestions::-webkit-scrollbar-track { background: transparent; }

.suggest {
  flex-shrink: 0;
  white-space: nowrap;
  background: var(--bg-2);
  border: 1px dashed var(--line-strong);
  color: var(--text-2);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 11.5px;
  cursor: pointer;
  transition: border-color .14s, color .14s, background .14s;
}
.suggest:hover {
  border-style: solid;
  color: var(--text-0);
  border-color: var(--rituo-teal);
  background: var(--bg-3);
}

.chat-input {
  display: flex;
  gap: 6px;
  padding: 12px 14px 14px;
  border-top: 1px solid var(--line);
  background: var(--bg-1);
}
.chat-input input {
  flex: 1;
  padding: 9px 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  color: var(--text-0);
  outline: none;
  font-size: 13px;
}
.chat-input input:focus { border-color: var(--rituo-teal); }
.chat-input input::placeholder { color: var(--text-3); }
.chat-input .icon-btn {
  width: 36px; height: 36px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  color: var(--text-1);
  display: grid; place-items: center;
  flex-shrink: 0;
}
.chat-input .icon-btn:hover { background: var(--bg-3); color: var(--rituo-teal); border-color: var(--rituo-teal); }
/* Botón Enviar: misma lógica que el mic (wrapper con borde, color
   claro grisaceo por default, al hover toma el teal de la marca). */
.chat-input #btn-send svg { width: 18px; height: 18px; display: block; }
.chat-input .icon-btn.recording {
  background: var(--rituo-red);
  color: #fff;
  border-color: var(--rituo-red);
  animation: pulse-red 1s ease-in-out infinite;
}
@keyframes pulse-red {
  0%, 100% { box-shadow: 0 0 0 0 rgba(192,0,26,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(192,0,26,0); }
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(40px);
  background: var(--bg-3);
  border: 1px solid var(--rituo-teal);
  color: var(--text-0);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  box-shadow: 0 8px 30px rgba(39,214,192,0.25);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ============================================================
   Splash de presentación (5 segundos al cargar)
   ============================================================ */
#splash {
  position: fixed;
  inset: 0;
  background: #0b1016;
  z-index: 9999;
  overflow: hidden;
  transition: opacity 0.6s ease;
}
#splash.hide {
  opacity: 0;
  pointer-events: none;
}
#splash-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
#splash-glow {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transition: opacity 2s ease;
}
#splash-stage {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
}
.splash-logo-row {
  display: flex;
  align-items: center;
}
.splash-iso {
  width: 80px;
  height: 80px;
  margin-right: 14px;
  flex-shrink: 0;
  opacity: 0;
  transform-origin: center;
  transform: scale(0.2);
  transition: opacity 0.55s cubic-bezier(0.16,1,0.3,1), transform 0.55s cubic-bezier(0.16,1,0.3,1);
}
.splash-iso.show { opacity: 1; transform: scale(1); }
#splash-iso-rect { transition: fill 1.2s ease; }
#splash-iso-circle {
  stroke-dasharray: 346;
  stroke-dashoffset: 346;
  transition: stroke-dashoffset 1s cubic-bezier(0.4,0,0.2,1) 0.1s;
}
#splash-iso-circle.show { stroke-dashoffset: 0; }
#splash-iso-inner { opacity: 0; transition: opacity 0.5s ease; }
#splash-iso-inner.show { opacity: 1; }
.splash-orbit-dot {
  animation: splash-orbit 2.8s linear infinite;
  transform-origin: center;
}
@keyframes splash-orbit {
  from { transform: rotate(0deg) translateX(55px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(55px) rotate(-360deg); }
}
@keyframes splash-pulse {
  0%, 100% { r: 10; opacity: 1; }
  50% { r: 22; opacity: 0.15; }
}
.splash-center-dot { animation: splash-pulse 1.6s ease-in-out infinite; }

#splash-rituo, #splash-teacher {
  font-size: 100px;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.85s cubic-bezier(0.16,1,0.3,1),
              transform 0.85s cubic-bezier(0.16,1,0.3,1),
              color 1.2s ease;
}
#splash-rituo {
  color: #ffffff;
  transform: translateX(-200px);
}
#splash-teacher {
  color: #E8843A;
  transform: translateX(200px);
}
#splash-rituo.show, #splash-teacher.show {
  opacity: 1;
  transform: translateX(0);
}

#splash-badges {
  display: flex;
  align-items: center;
  gap: 20px;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
#splash-badges.show {
  opacity: 1;
  transform: translateY(0);
}
#splash-badges svg {
  width: 80px;
  height: 80px;
  display: block;
}

#splash-subtitle {
  font-size: 13px;
  color: #4a5568;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-family: var(--font-display);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}
#splash-subtitle.show {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   Provider Flow — sistema de IA portado de RITUO TRACK V10
   ============================================================ */

/* ---------- Botón en nav inferior / FAB ---------- */
.pf-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, var(--bg-3), var(--bg-2));
  color: var(--text-0);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.4px;
  cursor: pointer;
  transition: transform .12s ease, border-color .12s ease, box-shadow .12s ease;
}
.pf-nav-btn:hover {
  transform: translateY(-1px);
  border-color: var(--rituo-teal);
  box-shadow: 0 6px 18px rgba(39,214,192,0.18);
}
.pf-nav-ico { display: inline-flex; color: var(--rituo-teal); }
.pf-nav-lbl { display: inline-block; }

.pf-fab {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 9000;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid rgba(39,214,192,0.4);
  background: linear-gradient(135deg, #0e141d, #161e2a);
  color: var(--text-0);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 0.6px;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(0,0,0,0.45), 0 0 0 1px rgba(39,214,192,0.18);
  transition: transform .15s ease, box-shadow .15s ease;
}
.pf-fab:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(39,214,192,0.4); }
.pf-fab svg { color: var(--rituo-teal); }
.pf-fab-lbl { line-height: 1; }

/* ---------- Root + backdrop + sheet ---------- */
/* Ventana flotante: el root no captura clicks (la página de atrás
   sigue siendo interactiva), sólo la propia sheet/modal sí. */
.pf-root {
  position: fixed;
  inset: 0;
  z-index: 9500;
  font-family: var(--font-body);
  pointer-events: none;
}
.pf-root.pf-closed .pf-sheet { opacity: 0; transform: scale(0.96); pointer-events: none; }
.pf-root.pf-closed .pf-modal { display: none; }

.pf-sheet {
  position: absolute;
  pointer-events: auto;
  /* left/top/width/height son seteados por JS para drag+resize */
  background: linear-gradient(180deg, #0c1219 0%, #060a10 100%);
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 24px 60px rgba(0,0,0,0.75), 0 0 0 1px rgba(39,214,192,0.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity .2s ease, transform .2s ease;
  min-width: 320px;
  min-height: 280px;
}
.pf-sheet.pf-dragging,
.pf-sheet.pf-resizing { transition: none; }

.pf-sheet.pf-minimized {
  height: auto !important;
  min-height: 0 !important;
}
.pf-sheet.pf-minimized .pf-list,
.pf-sheet.pf-minimized .pf-screen,
.pf-sheet.pf-minimized .pf-handle { display: none; }

/* ---------- Resize handles (8 zonas) ---------- */
.pf-handle {
  position: absolute;
  z-index: 5;
  background: transparent;
}
.pf-handle-n  { top: 0; left: 12px; right: 12px; height: 6px; cursor: ns-resize; }
.pf-handle-s  { bottom: 0; left: 12px; right: 12px; height: 6px; cursor: ns-resize; }
.pf-handle-e  { top: 12px; bottom: 12px; right: 0; width: 6px; cursor: ew-resize; }
.pf-handle-w  { top: 12px; bottom: 12px; left: 0; width: 6px; cursor: ew-resize; }
.pf-handle-ne { top: 0; right: 0; width: 12px; height: 12px; cursor: nesw-resize; }
.pf-handle-nw { top: 0; left: 0; width: 12px; height: 12px; cursor: nwse-resize; }
.pf-handle-se { bottom: 0; right: 0; width: 16px; height: 16px; cursor: nwse-resize; }
.pf-handle-sw { bottom: 0; left: 0; width: 12px; height: 12px; cursor: nesw-resize; }

/* Indicador visual sutil en la esquina inferior derecha */
.pf-handle-se::after {
  content: "";
  position: absolute;
  right: 3px;
  bottom: 3px;
  width: 10px;
  height: 10px;
  background:
    linear-gradient(135deg, transparent 0 50%, var(--text-3) 50% 60%, transparent 60% 70%, var(--text-3) 70% 80%, transparent 80%);
  opacity: 0.5;
}

/* Header draggable: cursor de mover */
.pf-head { cursor: move; user-select: none; }
.pf-head-actions { cursor: default; }
.pf-head-actions button { cursor: pointer; }

/* Acciones del header (minimizar + cerrar) */
.pf-head-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.pf-min {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text-1);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .12s, color .12s;
}
.pf-min:hover { background: var(--bg-3); color: var(--text-0); }

/* ---------- Head ---------- */
.pf-head {
  flex-shrink: 0;
  padding: 10px 22px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(39,214,192,0.04), transparent);
}
.pf-grab {
  width: 44px;
  height: 4px;
  border-radius: 999px;
  background: var(--line-strong);
  margin: 0 auto 12px;
}
.pf-head-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.pf-head-titles { flex: 1; min-width: 0; }
.pf-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: var(--text-0);
}
.pf-subtitle {
  margin-top: 2px;
  font-size: 13px;
  color: var(--text-2);
}
.pf-close {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text-1);
  font-size: 16px;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.pf-close:hover { background: var(--bg-3); border-color: var(--line-strong); color: var(--text-0); }

/* ---------- Lista ---------- */
.pf-list { overflow-y: auto; padding: 18px 22px 32px; }
.pf-list::-webkit-scrollbar { width: 8px; }
.pf-list::-webkit-scrollbar-thumb { background: rgba(192,0,26,0.4); border-radius: 4px; }
.pf-list::-webkit-scrollbar-track { background: transparent; }

.pf-stats {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.pf-stats-pill {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--bg-3);
  border: 1px solid var(--line-strong);
  font-size: 13px;
  color: var(--text-1);
}
.pf-stats-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--rituo-teal);
  margin-right: 2px;
}
.pf-stats-lbl { color: var(--text-2); }
.pf-stats-hint { font-size: 12px; color: var(--text-3); }

.pf-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pf-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border-radius: 14px;
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  color: var(--text-0);
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  transition: transform .14s ease, border-color .14s ease, box-shadow .14s ease;
}
.pf-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand, var(--line-strong));
  box-shadow: 0 8px 24px var(--brand-soft, rgba(0,0,0,0.5));
}
.pf-card-on {
  border-color: var(--brand-mid, var(--line-strong));
  background: linear-gradient(180deg, var(--brand-soft, var(--bg-2)), var(--bg-1));
}

.pf-card-icon {
  flex-shrink: 0;
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--brand-soft, var(--bg-3));
  color: var(--brand, var(--rituo-teal));
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pf-card-icon svg { width: 26px; height: 26px; }

.pf-card-body { flex: 1; min-width: 0; }
.pf-card-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--text-0);
  letter-spacing: 0.2px;
}
.pf-card-desc {
  font-size: 12px;
  color: var(--text-2);
  margin-top: 2px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pf-card-tag {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.pf-card-dot {
  position: absolute;
  top: 10px; right: 10px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 3px rgba(22,211,154,0.18);
  animation: pf-pulse 2s infinite ease-in-out;
}
@keyframes pf-pulse {
  0%,100% { box-shadow: 0 0 0 3px rgba(22,211,154,0.18); }
  50%     { box-shadow: 0 0 0 6px rgba(22,211,154,0.06); }
}

.pf-foot-note {
  margin-top: 18px;
  font-size: 11px;
  color: var(--text-3);
  display: flex;
  align-items: flex-start;
  gap: 6px;
  line-height: 1.5;
}
.pf-foot-note svg { color: var(--text-3); flex-shrink: 0; margin-top: 1px; }

/* ---------- Pantalla (guide / browser / paste / success) ---------- */
.pf-screen { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.pf-hidden { display: none !important; }

.pf-topbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: #0a0e15;
  border-bottom: 1px solid var(--line);
}
.pf-back {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-0);
  cursor: pointer;
  transition: background .12s;
}
.pf-back:hover { background: var(--bg-3); }
.pf-topbar-title {
  flex: 1;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--text-0);
}
.pf-topbar-spacer { width: 38px; flex-shrink: 0; }

.pf-body { overflow-y: auto; padding: 22px; flex: 1; }
.pf-body::-webkit-scrollbar { width: 8px; }
.pf-body::-webkit-scrollbar-thumb { background: var(--brand-mid, rgba(192,0,26,0.4)); border-radius: 4px; }

.pf-pane {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  max-width: 540px;
  margin: 0 auto;
}
.pf-pane-center { align-items: center; justify-content: center; min-height: 60vh; }
.pf-pane-browser { padding: 0; max-width: none; }

/* Hero del provider */
.pf-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.pf-hero-icon {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: #fff;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--brand-mid);
  box-shadow: 0 8px 24px var(--brand-soft);
}
.pf-hero-icon svg { width: 60px; height: 60px; }
.pf-hero-name {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--text-0);
}
.pf-hero-desc {
  font-size: 14px;
  color: var(--text-2);
  text-align: center;
  max-width: 480px;
  line-height: 1.5;
}
.pf-hero-pricing {
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.4px;
}
.pf-hero-small .pf-hero-icon { width: 64px; height: 64px; }
.pf-hero-small .pf-hero-icon svg { width: 38px; height: 38px; }
.pf-hero-small .pf-hero-name { font-size: 20px; }

/* Warning bar */
.pf-warn {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(245, 165, 36, 0.08);
  border: 1px solid rgba(245, 165, 36, 0.3);
  color: #f4c98a;
  font-size: 13px;
  margin: 14px 0;
}
.pf-warn svg { color: #f5a524; flex-shrink: 0; margin-top: 1px; }

/* Steps card */
.pf-steps {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  margin: 14px 0;
}
.pf-steps-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--text-0);
  margin-bottom: 12px;
}
.pf-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
}
.pf-step-circle {
  flex-shrink: 0;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--brand);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  font-family: var(--font-display);
  transition: background .25s, transform .25s;
}
.pf-step-on .pf-step-circle {
  background: var(--ok);
  animation: pf-step-pulse 1.2s ease-in-out infinite;
}
@keyframes pf-step-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.1); }
}
.pf-step-text {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-1);
  line-height: 1.5;
  padding-top: 4px;
}
.pf-step-on .pf-step-text { color: var(--ok); }

.pf-secure-note {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 8px auto 0;
  font-size: 12px;
  color: var(--text-3);
  align-self: center;
}
.pf-secure-note svg { color: var(--brand); }

.pf-arrow {
  display: flex;
  justify-content: center;
  margin: 18px 0 8px;
  color: var(--brand);
}
.pf-arrow-bouncing { animation: pf-bounce 0.9s infinite alternate ease-in-out; }
@keyframes pf-bounce { from { transform: translateY(0); } to { transform: translateY(10px); } }

/* Botones */
.pf-btn-fat {
  width: 100%;
  height: 52px;
  border-radius: 26px;
  background: var(--brand);
  color: #fff;
  border: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: filter .12s, transform .12s;
  box-shadow: 0 8px 20px var(--brand-soft);
}
.pf-btn-fat:hover { filter: brightness(1.1); transform: translateY(-1px); }
.pf-btn-ico { display: inline-flex; }

.pf-btn-success {
  width: 100%;
  max-width: 340px;
  height: 52px;
  border-radius: 26px;
  background: var(--ok);
  color: #fff;
  border: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
  box-shadow: 0 8px 24px rgba(22,211,154,0.35);
  animation: pf-pulse-btn 1.5s ease-in-out infinite;
}
@keyframes pf-pulse-btn {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.04); }
}

.pf-link-btn {
  background: transparent;
  border: none;
  color: var(--brand);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  padding: 12px;
  margin-top: 6px;
}
.pf-link-btn:hover { text-decoration: underline; }

.pf-tiny {
  font-size: 11px;
  color: var(--text-3);
  text-align: center;
  margin-top: 10px;
  padding: 0 12px;
  line-height: 1.5;
}

/* Browser pane */
.pf-banner {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #6d28d9, #7c3aed);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
}
.pf-banner-ico { flex-shrink: 0; display: inline-flex; }
.pf-iframe-box {
  position: relative;
  flex: 1;
  min-height: 380px;
  background: #fff;
}
.pf-iframe { width: 100%; height: 100%; border: 0; display: block; min-height: 380px; }
.pf-iframe-newtab {
  position: absolute;
  top: 10px; right: 10px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(0,0,0,0.7);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  z-index: 5;
}
.pf-iframe-newtab:hover { background: #000; }

.pf-iframe-err {
  padding: 30px 22px;
  text-align: center;
  color: var(--text-1);
  background: var(--bg-1);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.pf-iframe-err svg { color: var(--warn); }
.pf-iframe-err-title { font-family: var(--font-display); font-weight: 800; font-size: 17px; }
.pf-iframe-err-sub { font-size: 13px; color: var(--text-2); max-width: 380px; line-height: 1.5; }
.pf-link {
  display: inline-block;
  margin-top: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--brand, var(--rituo-teal));
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
}

.pf-btn-back-paste {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  height: 56px;
  background: var(--ok);
  color: #fff;
  border: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.4px;
  cursor: pointer;
}
.pf-btn-back-paste:hover { filter: brightness(1.08); }

/* Paste pane */
.pf-manual {
  margin-top: 18px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 12px;
}
.pf-manual summary {
  cursor: pointer;
  color: var(--text-2);
  font-weight: 600;
  padding: 4px 0;
}
.pf-manual summary:hover { color: var(--text-0); }
.pf-manual-input {
  width: 100%;
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: var(--bg-1);
  color: var(--text-0);
  font-family: var(--font-mono);
  font-size: 12px;
}
.pf-manual-input:focus { outline: none; border-color: var(--brand); }
.pf-manual-btn {
  margin-top: 10px;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  border: none;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
}

/* Success pane */
.pf-checkbubble {
  width: 130px; height: 130px;
  border-radius: 50%;
  background: var(--ok);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 16px 40px rgba(22,211,154,0.35), 0 0 0 6px rgba(22,211,154,0.15);
  animation: pf-pop 0.5s cubic-bezier(.34,1.56,.64,1);
}
@keyframes pf-pop {
  from { transform: scale(0.6); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}
.pf-success-title {
  margin-top: 22px;
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--text-0);
  text-align: center;
}
.pf-success-sub {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-2);
  text-align: center;
}
.pf-keybox {
  margin-top: 22px;
  width: 100%;
  max-width: 420px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--brand-soft);
  border: 1px solid var(--brand-mid);
}
.pf-keybox-txt {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--brand);
  word-break: break-all;
  line-height: 1.5;
}
.pf-keybox-btn {
  width: 34px; height: 34px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--brand);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background .12s;
}
.pf-keybox-btn:hover { background: rgba(255,255,255,0.08); }

/* ---------- Modal de provider (sobre el sheet) ---------- */
.pf-modal {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(0,0,0,0.5);
  padding: 16px;
  animation: pf-fade .2s ease;
}
@keyframes pf-fade { from { opacity: 0; } to { opacity: 1; } }
@media (min-width: 640px) { .pf-modal { align-items: center; } }

.pf-modal-card {
  width: min(520px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  background: linear-gradient(180deg, #0e141d, #07090e);
  border: 1px solid var(--line-strong);
  border-radius: 20px;
  padding: 18px 18px 22px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.7);
  animation: pf-slideup .25s cubic-bezier(.2,.7,.2,1);
}
@keyframes pf-slideup { from { transform: translateY(40px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.pf-modal-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.pf-modal-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--brand-soft);
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.pf-modal-icon svg { width: 28px; height: 28px; }
.pf-modal-titles { flex: 1; min-width: 0; }
.pf-modal-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: 0.6px;
  color: var(--text-0);
  text-transform: uppercase;
}
.pf-modal-tag {
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}
.pf-modal-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--bg-3);
  color: var(--text-1);
  cursor: pointer;
  font-size: 14px;
}
.pf-modal-close:hover { background: var(--bg-4); color: var(--text-0); }

.pf-modal-keybar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--brand-soft);
  border: 1px solid var(--brand-mid);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 14px;
}
.pf-modal-keytxt { flex: 1; color: var(--brand); }
.pf-modal-keybadge { font-size: 11px; font-weight: 700; color: var(--ok); }

.pf-modal-actions { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }

.pf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  border: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.3px;
  cursor: pointer;
  transition: filter .12s, transform .12s, background .12s;
}
.pf-btn-primary { background: var(--brand); color: #fff; box-shadow: 0 4px 14px var(--brand-soft); }
.pf-btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }
.pf-btn-ghost {
  background: var(--bg-2);
  color: var(--text-0);
  border: 1px solid var(--line-strong);
}
.pf-btn-ghost:hover { background: var(--bg-3); border-color: var(--brand-mid); }
.pf-btn-danger {
  background: rgba(192,0,26,0.12);
  color: #ff7080;
  border: 1px solid rgba(192,0,26,0.4);
}
.pf-btn-danger:hover { background: rgba(192,0,26,0.2); }

.pf-modal-section { margin-bottom: 14px; }
.pf-modal-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 8px;
}
.pf-modal-models { display: flex; flex-wrap: wrap; gap: 6px; }
.pf-auto-model {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(124, 58, 237, 0.24);
  background: linear-gradient(180deg, rgba(124, 58, 237, 0.12), rgba(17, 24, 39, 0.5));
}
.pf-auto-model-badge {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(139, 92, 246, 0.18);
  border: 1px solid rgba(139, 92, 246, 0.4);
  color: #c4b5fd;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.pf-auto-model-copy { display: grid; gap: 4px; min-width: 0; }
.pf-auto-model-name {
  color: var(--text-0);
  font-weight: 800;
  line-height: 1.25;
}
.pf-auto-model-notes {
  color: var(--text-2);
  font-size: 12px;
  line-height: 1.45;
}
.pf-model-pill {
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text-1);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color .12s, background .12s, color .12s;
}
.pf-model-pill:hover { border-color: var(--brand-mid); color: var(--text-0); }
.pf-model-pill-on {
  background: var(--brand-soft);
  border-color: var(--brand);
  color: var(--brand);
}
.pf-model-name { font-weight: 700; }
.pf-model-notes { font-size: 11px; color: var(--text-3); font-weight: 500; }
.pf-model-pill-on .pf-model-notes { color: inherit; opacity: 0.85; }

.pf-modal-agents { display: flex; gap: 6px; flex-wrap: wrap; }
.pf-agent-pill {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text-1);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.pf-agent-pill:hover { border-color: var(--brand-mid); color: var(--text-0); }
.pf-agent-pill-on {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

/* ---------- Snackbar ---------- */
.pf-snack {
  position: absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 50;
  background: #1a2030;
  color: var(--text-0);
  border: 1px solid var(--line-strong);
  padding: 12px 18px;
  border-radius: 12px;
  font-size: 13px;
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
  max-width: 90%;
  text-align: center;
  animation: pf-snack-in .25s ease;
}
@keyframes pf-snack-in {
  from { transform: translate(-50%, 20px); opacity: 0; }
  to   { transform: translate(-50%, 0);    opacity: 1; }
}

/* Botón "Proveedores de IA" en sidebar-foot */
.foot-providers-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  color: var(--text-0);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.4px;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.foot-providers-btn:hover {
  border-color: var(--rituo-teal);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(39,214,192,0.16);
}
.foot-providers-ico {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: rgba(39,214,192,0.12);
  color: var(--rituo-teal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.foot-providers-lbl { flex: 1; line-height: 1.2; }
.foot-providers-count {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--bg-3);
  color: var(--rituo-teal);
  border: 1px solid var(--line-strong);
}

/* ============================================================
   ¿Cómo te fue? — gate de comprensión antes del cuestionario
   ============================================================ */
.comp-gate {
  margin-top: 18px;
  padding: 18px;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line);
  transition: opacity .35s ease, transform .35s ease, max-height .35s ease;
  overflow: hidden;
}
.comp-gate h3 {
  margin: 0 0 4px 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-0);
  letter-spacing: 0.3px;
}
.comp-sub {
  margin: 0 0 14px 0;
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.5;
}
.comp-opts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
@media (max-width: 720px) { .comp-opts { grid-template-columns: 1fr; } }

.comp-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg-3);
  color: var(--text-0);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  transition: border-color .14s, transform .14s, box-shadow .14s, background .14s;
}
.comp-opt:hover {
  transform: translateY(-1px);
  border-color: var(--rituo-teal);
  box-shadow: 0 6px 18px rgba(39,214,192,0.16);
}
.comp-opt.comp-on {
  border-color: var(--rituo-teal);
  background: rgba(39,214,192,0.08);
  color: var(--rituo-teal);
}
.comp-emo {
  font-size: 22px;
  line-height: 1;
  flex-shrink: 0;
}

.comp-back {
  display: block;
  margin: 14px auto 0;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--rituo-teal);
  color: #07090e;
  border: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.4px;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(39,214,192,0.3);
  transition: filter .12s, transform .12s;
}
.comp-back:hover { filter: brightness(1.1); transform: translateY(-1px); }

.comp-collapsed {
  opacity: 0;
  transform: translateY(-10px);
  max-height: 0;
  margin-top: 0;
  padding-top: 0;
  padding-bottom: 0;
  border-color: transparent;
  pointer-events: none;
}

.comp-real {
  margin-top: 18px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .35s ease, transform .35s ease;
}
.comp-real.comp-show {
  opacity: 1;
  transform: translateY(0);
}
.comp-real h3 {
  margin: 0 0 6px 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text-0);
}


/* ============================================================
   Roles del pipeline — ventana flotante propia
   ============================================================ */

/* Botón en sidebar-foot debajo de Proveedores */
.foot-pipeline-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  color: var(--text-0);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.4px;
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.foot-pipeline-btn:hover {
  border-color: #B794F4;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(183,148,244,0.16);
}
.foot-pipeline-ico {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: rgba(183,148,244,0.14);
  color: #B794F4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.foot-pipeline-ico iconify-icon { font-size: 18px; }
.foot-pipeline-lbl { flex: 1; line-height: 1.2; }
.foot-pipeline-count {
  font-size: 11px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--bg-3);
  color: #B794F4;
  border: 1px solid var(--line-strong);
  white-space: nowrap;
}

/* Ventana flotante (mismo patrón que Proveedores) */
.pwp-root {
  position: fixed;
  inset: 0;
  z-index: 9400;
  font-family: var(--font-body);
  pointer-events: none;
}
.pwp-root.pwp-closed .pwp-sheet { opacity: 0; transform: scale(0.96); pointer-events: none; }

.pwp-sheet {
  position: absolute;
  pointer-events: auto;
  background: linear-gradient(180deg, #0c1219 0%, #060a10 100%);
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  box-shadow: 0 24px 60px rgba(0,0,0,0.75), 0 0 0 1px rgba(183,148,244,0.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity .2s ease, transform .2s ease;
  min-width: 320px;
  min-height: 280px;
}
.pwp-sheet.pwp-dragging,
.pwp-sheet.pwp-resizing { transition: none; }
.pwp-sheet.pwp-minimized { height: auto !important; min-height: 0 !important; }
.pwp-sheet.pwp-minimized .pwp-body,
.pwp-sheet.pwp-minimized .pwp-handle { display: none; }

/* Resize handles */
.pwp-handle { position: absolute; z-index: 5; background: transparent; }
.pwp-handle-n  { top: 0; left: 12px; right: 12px; height: 6px; cursor: ns-resize; }
.pwp-handle-s  { bottom: 0; left: 12px; right: 12px; height: 6px; cursor: ns-resize; }
.pwp-handle-e  { top: 12px; bottom: 12px; right: 0; width: 6px; cursor: ew-resize; }
.pwp-handle-w  { top: 12px; bottom: 12px; left: 0; width: 6px; cursor: ew-resize; }
.pwp-handle-ne { top: 0; right: 0; width: 12px; height: 12px; cursor: nesw-resize; }
.pwp-handle-nw { top: 0; left: 0; width: 12px; height: 12px; cursor: nwse-resize; }
.pwp-handle-se { bottom: 0; right: 0; width: 16px; height: 16px; cursor: nwse-resize; }
.pwp-handle-sw { bottom: 0; left: 0; width: 12px; height: 12px; cursor: nesw-resize; }
.pwp-handle-se::after {
  content: ""; position: absolute; right: 3px; bottom: 3px; width: 10px; height: 10px;
  background: linear-gradient(135deg, transparent 0 50%, var(--text-3) 50% 60%, transparent 60% 70%, var(--text-3) 70% 80%, transparent 80%);
  opacity: 0.5;
}

/* Header */
.pwp-head {
  flex-shrink: 0;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(183,148,244,0.05), transparent);
  cursor: move;
  user-select: none;
}
.pwp-head-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.pwp-head-titles { flex: 1; min-width: 0; }
.pwp-title {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--text-0);
  letter-spacing: 0.4px;
}
.pwp-head-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--rituo-teal);
  box-shadow: 0 0 0 3px rgba(39,214,192,0.18);
  animation: pwp-blink 2s infinite ease-in-out;
}
@keyframes pwp-blink {
  0%,100% { opacity: 1; }
  50%     { opacity: 0.4; }
}
.pwp-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--text-2);
}
.pwp-head-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: default;
}
.pwp-head-actions button { cursor: pointer; }
.pwp-count {
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(183,148,244,0.16);
  color: #B794F4;
  border: 1px solid rgba(183,148,244,0.4);
  margin-right: 4px;
}
.pwp-min, .pwp-close {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  color: var(--text-1);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background .12s, color .12s;
}
.pwp-min:hover, .pwp-close:hover { background: var(--bg-3); color: var(--text-0); }

/* Body con la lista de workers */
.pwp-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
}
.pwp-body::-webkit-scrollbar { width: 8px; }
.pwp-body::-webkit-scrollbar-thumb { background: rgba(183,148,244,0.4); border-radius: 4px; }

.pwp-empty .pwp-empty-cta { display: flex; }
.pwp-sheet:not(.pwp-empty) .pwp-empty-cta { display: none; }

.pwp-empty-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 14px;
  background: var(--bg-2);
  border: 1px dashed var(--line-strong);
  border-radius: 12px;
  color: var(--text-1);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 13px;
  text-align: left;
  transition: border-color .15s, background .15s;
}
.pwp-empty-cta:hover {
  border-color: #B794F4;
  background: rgba(183,148,244,0.06);
  color: var(--text-0);
}
.pwp-empty-ico iconify-icon { font-size: 24px; color: #B794F4; }
.pwp-empty-txt { flex: 1; line-height: 1.4; }
.pwp-empty-arrow iconify-icon { font-size: 18px; color: var(--text-2); }

.pwp-workers {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ---------- Worker row ---------- */
.pwp-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: 12px;
  background: var(--bg-2);
  border: 1px solid var(--line);
}

.pwp-avatar {
  position: relative;
  width: 52px; height: 52px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Anillos pulsantes (svg-spinners:pulse-rings-3) — sólo visibles en working */
.pwp-rings {
  position: absolute;
  inset: 0;
  font-size: 52px;
  color: var(--brand);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.pwp-row-working .pwp-rings { opacity: 1; }

/* Anillo estático según estado */
.pwp-row-idle  .pwp-avatar::before,
.pwp-row-done  .pwp-avatar::before,
.pwp-row-error .pwp-avatar::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 1.5px solid var(--brand);
  opacity: 0.18;
  pointer-events: none;
}
.pwp-row-done  .pwp-avatar::before { border-color: var(--ok); opacity: 0.6; }
.pwp-row-error .pwp-avatar::before { border-color: #EF4444; opacity: 0.6; }

/* Disco con el logo */
.pwp-disc {
  position: relative;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  overflow: hidden;
  color: var(--brand);
}
.pwp-disc svg { width: 24px; height: 24px; display: block; }
.pwp-disc img { width: 100%; height: 100%; object-fit: contain; }

/* Badges done / error */
.pwp-badge {
  position: absolute;
  bottom: -2px;
  right: -2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 3;
  border: 1.5px solid #fff;
  color: #fff;
  transform: scale(0);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1);
}
.pwp-badge iconify-icon { font-size: 12px; }
.pwp-badge-done { background: var(--ok); }
.pwp-badge-error { background: #EF4444; }
.pwp-row-done .pwp-badge-done { transform: scale(1); }
.pwp-row-error .pwp-badge-error { transform: scale(1); }

/* Info del worker */
.pwp-info { flex: 1; min-width: 0; }
.pwp-row1 {
  display: flex;
  align-items: center;
  gap: 8px;
}
.pwp-name {
  flex: 1;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14px;
  color: var(--brand);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pwp-tokens {
  font-size: 11px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--brand);
  opacity: 0.6;
}
.pwp-row-working .pwp-tokens { opacity: 0.95; }
.pwp-row-done .pwp-tokens { color: var(--ok); opacity: 0.95; }

.pwp-row2 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 3px;
}
.pwp-role {
  font-size: 10px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  font-weight: 800;
}
.pwp-status {
  font-size: 11px;
  color: var(--text-2);
  font-weight: 600;
}
.pwp-row-working .pwp-status { color: var(--brand); }
.pwp-row-done .pwp-status { color: var(--ok); }
.pwp-row-error .pwp-status { color: #EF4444; }

/* Barra cometa */
.pwp-bar {
  position: relative;
  height: 3px;
  margin-top: 6px;
  background: rgba(255,255,255,0.04);
  border-radius: 2px;
  overflow: hidden;
}
.pwp-bar-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: var(--brand);
  border-radius: 2px;
  transition: width 0.3s ease;
}
.pwp-row-working .pwp-bar-fill {
  width: 30%;
  background: linear-gradient(90deg, transparent 0%, var(--brand) 50%, transparent 100%);
  animation: pwp-comet 1.3s linear infinite;
}
@keyframes pwp-comet {
  from { transform: translateX(-100%); }
  to   { transform: translateX(450%); }
}
.pwp-row-done .pwp-bar-fill { width: 100%; background: var(--ok); }
.pwp-row-error .pwp-bar-fill { width: 100%; background: #EF4444; }

/* Mensaje del bot oculto hasta que termine el pipeline */
.msg-hidden { display: none !important; }
.msg-reveal { animation: msg-fade-in .35s ease; }
@keyframes msg-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Mini panel horizontal de agentes en el chat
   (debajo de "Tus profesores")
   ============================================================ */
.pwm-strip {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 16px 8px;
  margin: 0;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(183,148,244,0.04), transparent);
}
.pwm-strip.pwm-empty { display: none; }
.pwm-strip-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-display);
}
.pwm-strip-count {
  font-size: 12px;
  color: var(--text-1);
}
.pwm-strip-count strong {
  color: var(--rituo-teal);
  font-weight: 800;
  font-size: 13px;
}
.pwm-strip-lbl {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-3);
  font-weight: 700;
}
.pwm-row {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.pwm-disconnected .pwm-logo {
  background: var(--bg-3) !important;
  border-color: var(--line) !important;
  color: var(--text-3) !important;
  opacity: 0.55;
}
.pwm-disconnected:hover .pwm-logo {
  opacity: 0.9;
  border-color: var(--brand) !important;
}
.pwm-disconnected .pwm-logo svg,
.pwm-disconnected .pwm-logo img {
  filter: grayscale(0.85);
}

.pwm-dot {
  position: relative;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.pwm-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: #fff;
  border: 1.5px solid var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--brand);
  transition: opacity .25s ease, transform .25s ease;
}
.pwm-logo svg { width: 18px; height: 18px; display: block; }
.pwm-logo img { width: 100%; height: 100%; object-fit: contain; }

/* Estados según el patrón Iconify del usuario:
   idle    → logo opacity 40%, sin spinner
   working → logo opacity 40% + ring-resize spinner arriba
   thinking→ logo opacity 40% + bars-rotate-fade spinner arriba
   done    → logo opacity 100%, ring estático verde
   error   → logo opacity 100%, ring rojo  */
.pwm-idle .pwm-logo,
.pwm-working .pwm-logo,
.pwm-thinking .pwm-logo {
  opacity: 0.4;
}
.pwm-done .pwm-logo,
.pwm-error .pwm-logo {
  opacity: 1;
}

.pwm-spin {
  position: absolute;
  inset: -2px;
  font-size: 32px;
  color: var(--brand);
  pointer-events: none;
  display: none;
}
.pwm-working .pwm-spin-working { display: block; }
.pwm-thinking .pwm-spin-thinking { display: block; }

.pwm-check {
  position: absolute;
  bottom: -3px;
  right: -3px;
  font-size: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ok);
  color: #fff;
  display: none;
  align-items: center;
  justify-content: center;
  border: 1.5px solid #fff;
  z-index: 4;
}
.pwm-done .pwm-check { display: inline-flex; }

/* Color por lenguaje en el comprehension gate (HTML naranja,
   CSS azul, JS naranja) y caritas más grandes con line-md. */
.comp-gate-html { --lang-color: var(--html); }
.comp-gate-css  { --lang-color: var(--css); }
.comp-gate-js   { --lang-color: #F59E0B; }

.comp-ico {
  font-size: 38px;
  color: var(--lang-color, var(--rituo-teal));
  flex-shrink: 0;
}
.comp-opt:hover .comp-ico { transform: scale(1.05); }
.comp-opt.comp-on .comp-ico { color: var(--lang-color, var(--rituo-teal)); }

/* En el botón el texto queda más a la derecha cuando el ico es grande */
.comp-opt {
  gap: 14px;
}

/* Borde activo del botón en el color del lenguaje */
.comp-gate-html .comp-opt:hover { border-color: var(--html); box-shadow: 0 6px 18px rgba(227,79,38,0.16); }
.comp-gate-css  .comp-opt:hover { border-color: var(--css);  box-shadow: 0 6px 18px rgba(21,114,182,0.16); }
.comp-gate-js   .comp-opt:hover { border-color: #F59E0B;     box-shadow: 0 6px 18px rgba(245,158,11,0.16); }

.comp-gate-html .comp-opt.comp-on { border-color: var(--html); background: rgba(227,79,38,0.10); color: var(--html); }
.comp-gate-css  .comp-opt.comp-on { border-color: var(--css);  background: rgba(21,114,182,0.10); color: var(--css); }
.comp-gate-js   .comp-opt.comp-on { border-color: #F59E0B;     background: rgba(245,158,11,0.10); color: #F59E0B; }

.comp-gate-html .comp-back { background: var(--html); color: #fff; box-shadow: 0 6px 18px rgba(227,79,38,0.3); }
.comp-gate-css  .comp-back { background: var(--css);  color: #fff; box-shadow: 0 6px 18px rgba(21,114,182,0.3); }
.comp-gate-js   .comp-back { background: #F59E0B;     color: #07090e; box-shadow: 0 6px 18px rgba(245,158,11,0.3); }

/* ============================================================
   Streaming chat bubble — cursor parpadeante + vía provider
   ============================================================ */
.msg-streaming .msg-bubble {
  position: relative;
}
.msg-cursor {
  display: inline-block;
  margin-left: 1px;
  font-weight: 700;
  color: var(--ac, var(--rituo-teal));
  animation: msg-blink 1s steps(2, start) infinite;
}
@keyframes msg-blink {
  to { opacity: 0; }
}
.msg-via {
  margin-left: 4px;
  font-size: 10px;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-3);
  opacity: 0.85;
}
.msg pre.bot-code {
  margin: 8px 0;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--vs-bg);
  color: var(--vs-text);
  font-family: var(--font-mono);
  font-size: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
}
.msg pre.bot-code code { background: transparent; color: inherit; }
.msg code.bot-inline {
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rituo-teal);
}
.msg-content { line-height: 1.5; }
.msg-content p { margin: 0 0 6px 0; }
.msg-content p:last-child { margin-bottom: 0; }

/* Provider en mini-panel marcado como blocked (necesita backend). */
.pwm-blocked .pwm-logo { opacity: 0.25 !important; filter: grayscale(0.7); }
.pwm-blocked::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: repeating-linear-gradient(45deg, transparent 0 4px, rgba(255,255,255,0.04) 4px 5px);
  pointer-events: none;
}

/* ============================================================
   Perf bar — barra de rendimiento arriba de la ventana flotante
   ============================================================ */
.pf-perfbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 14px 7px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(180deg, #14181f, #0f131a);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  user-select: none;
  cursor: move;
  position: relative;
}
.pf-perfbar-grip {
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 3px;
  border-radius: 999px;
  background: var(--line-strong);
  pointer-events: none;
}
.pf-perfbar-metric {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.pf-perfbar-metric iconify-icon {
  font-size: 13px;
  color: var(--text-3);
}
.pf-perfbar-status .pf-perfbar-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--text-3);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.5);
  transition: background .2s;
}
.pf-perfbar-status[data-state="working"] .pf-perfbar-dot { background: var(--rituo-teal); animation: pf-perfbar-pulse 1s infinite; }
.pf-perfbar-status[data-state="error"]   .pf-perfbar-dot { background: #EF4444; }
.pf-perfbar-status[data-state="done"]    .pf-perfbar-dot { background: var(--ok); }
@keyframes pf-perfbar-pulse {
  0%,100% { opacity: 1; }
  50%     { opacity: 0.3; }
}
.pf-perfbar-label {
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  font-size: 9.5px;
  color: var(--text-1);
}
.pf-perfbar-value {
  font-weight: 800;
  color: var(--text-1);
  font-feature-settings: 'tnum';
}
.pf-perfbar-status[data-state="error"] .pf-perfbar-label { color: #EF4444; }
.pf-perfbar-status[data-state="done"]  .pf-perfbar-label { color: var(--ok); }
.pf-perfbar-status[data-state="working"] .pf-perfbar-label { color: var(--rituo-teal); }

/* ============================================================
   Chat input — diseño V10/ChatGPT: container redondeado con
   textarea arriba y fila de botones circulares abajo (sin "+",
   solo mic + send).
   ============================================================ */
.chat-input-wrap {
  position: relative;
  padding: 6px 12px 12px;
  background: var(--bg-1);
}
.chat-input-resize {
  height: 8px;
  cursor: ns-resize;
  background: transparent;
  position: relative;
  margin-bottom: 4px;
}
.chat-input-resize::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 3px;
  border-radius: 999px;
  background: var(--line-strong);
  transition: background .15s, width .15s;
}
.chat-input-resize:hover::before {
  background: var(--rituo-teal);
  width: 48px;
}

/* Container del input: surface redondeado 24px, border 1px,
   padding interno. Textarea arriba (sin border) + actions abajo. */
.chat-input {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 12px 8px;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 24px;
  transition: border-color .15s, box-shadow .15s;
}
.chat-input:focus-within {
  border-color: var(--rituo-teal);
  box-shadow: 0 0 0 3px rgba(39,214,192,0.10);
}

#chat-text {
  width: 100%;
  min-height: 36px;
  max-height: 60vh;
  resize: none;
  padding: 6px 4px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--text-0);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  outline: none;
  overflow-y: auto;
  box-shadow: none !important;
}
#chat-text:focus { border: none; box-shadow: none !important; }
#chat-text::placeholder { color: var(--text-3); }

/* Fila de botones abajo: mic a la IZQUIERDA, send a la DERECHA */
.chat-input-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 0 2px 2px;
}

/* Botón circular base */
.chat-circle-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background .14s, color .14s, transform .12s, box-shadow .14s;
}
.chat-circle-btn:active { transform: scale(0.92); }
.chat-circle-btn svg { display: block; }

/* Mic: misma lógica que el send (claro en reposo, teal al tocar). */
.chat-mic {
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.85);
  box-shadow: none;
}
.chat-mic svg { width: 16px; height: 16px; }
.chat-mic:hover {
  background: var(--rituo-teal);
  color: #07090e;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(39,214,192,0.4);
}
.chat-mic:focus-visible {
  background: var(--rituo-teal);
  color: #07090e;
  outline: none;
  box-shadow: 0 0 0 3px rgba(39,214,192,0.35);
}
/* Mientras está grabando = rojo pulsante */
.chat-mic.mic-recording {
  background: var(--rituo-red);
  color: #fff;
  animation: pulse-red 1s ease-in-out infinite;
}
.chat-mic.mic-loading {
  background: var(--rituo-teal);
  color: #07090e;
}

/* Send: estado normal claro (semi-transparente con flecha blanca).
   Al hover se "activa" → teal sólido con sombra (como antes). */
.chat-send {
  background: rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.85);
  box-shadow: none;
}
.chat-send:hover {
  background: var(--rituo-teal);
  color: #07090e;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(39,214,192,0.4);
}
.chat-send:focus-visible {
  background: var(--rituo-teal);
  color: #07090e;
  outline: none;
  box-shadow: 0 0 0 3px rgba(39,214,192,0.35);
}

/* ============================================================
   Render del bot — títulos en negrita, listas, code, etc.
   ============================================================ */
.msg .bot-h {
  margin: 6px 0 4px 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.2px;
  color: var(--text-0);
  line-height: 1.3;
}
.msg h2.bot-h { font-size: 16px; }
.msg h3.bot-h { font-size: 15px; color: var(--text-0); }
.msg h4.bot-h { font-size: 14px; color: var(--text-1); }
.msg h5.bot-h { font-size: 13px; color: var(--text-1); }

.msg .bot-list {
  margin: 4px 0 6px 0;
  padding-left: 22px;
}
.msg .bot-list li {
  margin: 2px 0;
  line-height: 1.5;
}
.msg ul.bot-list { list-style: none; padding-left: 4px; }
.msg ul.bot-list li::before {
  content: "▸ ";
  color: var(--rituo-teal);
  font-weight: 800;
  margin-right: 4px;
}

.msg strong { color: var(--text-0); font-weight: 700; }
.msg em     { color: var(--text-1); font-style: italic; }

/* Mic con animación de grabando + cargando */
#btn-mic {
  position: relative;
  transition: background .15s, color .15s;
}
#btn-mic.mic-recording {
  background: #EF4444 !important;
  color: #fff !important;
  animation: mic-pulse 1.2s infinite;
}
#btn-mic.mic-recording svg { color: #fff; }
@keyframes mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(239,68,68,0.4); }
  50%      { box-shadow: 0 0 0 8px rgba(239,68,68,0); }
}
#btn-mic.mic-loading {
  background: var(--rituo-teal) !important;
  color: #07090e !important;
}
#btn-mic.mic-loading::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  border: 2px solid rgba(7,9,14,0.3);
  border-top-color: #07090e;
  animation: mic-spin 0.7s linear infinite;
}
@keyframes mic-spin {
  to { transform: rotate(360deg); }
}

/* ============================================================
   Color por lenguaje en negritas y títulos del bot del chat
   ============================================================ */
.chat-lang-html .msg.bot strong,
.chat-lang-html .msg.bot .bot-h { color: var(--html); }
.chat-lang-html .msg.bot ul.bot-list li::before { color: var(--html); }

.chat-lang-css .msg.bot strong,
.chat-lang-css .msg.bot .bot-h { color: var(--css); }
.chat-lang-css .msg.bot ul.bot-list li::before { color: var(--css); }

.chat-lang-js .msg.bot strong,
.chat-lang-js .msg.bot .bot-h { color: #D4A800; }  /* JS amarillo oscuro */
.chat-lang-js .msg.bot ul.bot-list li::before { color: #D4A800; }

/* Inline code mantiene su color teal por defecto pero la borde
   acompaña al lenguaje para coherencia visual */
.chat-lang-html .msg.bot code.bot-inline { color: var(--html); border-left: 2px solid var(--html); padding-left: 5px; }
.chat-lang-css .msg.bot code.bot-inline  { color: var(--css);  border-left: 2px solid var(--css);  padding-left: 5px; }
.chat-lang-js .msg.bot code.bot-inline   { color: #D4A800;     border-left: 2px solid #D4A800;     padding-left: 5px; }

/* ============================================================
   Toolbar minimalista de acciones del bot (estilo ChatGPT/Claude)
   ============================================================ */
.msg-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-top: 8px;
  padding-top: 6px;
  border-top: 1px solid rgba(255,255,255,0.04);
  opacity: 0.55;
  transition: opacity .15s;
}
.msg.bot:hover .msg-actions { opacity: 1; }

/* Botones del bot — mismo idioma visual que .icon-btn del chat:
   bg-2 con border-line, hover teal, border-radius r-2. */
.msg-action {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text-1);
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.2px;
}
.msg-action iconify-icon { font-size: 16px; display: block; }
.msg-action:hover {
  background: var(--bg-3);
  color: var(--rituo-teal);
  border-color: var(--rituo-teal);
}
.msg-action:active { transform: scale(0.96); }

/* Botón solo-icono (Copy) sin texto — círculo perfecto */
.msg-action[data-action="copy"] { padding: 0; width: 28px; height: 28px; }

/* Iconos play/stop dentro del mismo botón — uno visible según estado */
.msg-action .ico-stop { display: none; }
.msg-action.tts-playing .ico-play { display: none; }
.msg-action.tts-playing .ico-stop { display: none; }
/* Estilo "leyendo" igual al del header: pill rojo del color del lenguaje
   con barrido luminoso horizontal + equalizer mini de 4 barras animadas. */
.msg-action.tts-playing {
  background: var(--lang-active, var(--rituo-red));
  color: #fff;
  border-color: var(--lang-active, var(--rituo-red));
  background-image: linear-gradient(90deg,
    transparent 0%,
    rgba(255,255,255,0.18) 50%,
    transparent 100%);
  background-size: 50% 100%;
  background-repeat: no-repeat;
  background-position: -50% 0;
  animation: listen-sweep 1.4s ease-in-out infinite;
  overflow: hidden;
}
.msg-action.tts-playing::before {
  content: "";
  display: inline-block;
  width: 14px; height: 12px;
  margin-right: 3px;
  background:
    linear-gradient(currentColor, currentColor) left center / 2px 30% no-repeat,
    linear-gradient(currentColor, currentColor) 33% center / 2px 70% no-repeat,
    linear-gradient(currentColor, currentColor) 66% center / 2px 50% no-repeat,
    linear-gradient(currentColor, currentColor) right center / 2px 90% no-repeat;
  animation: listen-eq 0.85s ease-in-out infinite;
}
.msg-action.tts-playing .msg-action-tag::after {
  content: " · Stop";
  font-weight: 700;
  opacity: 0.9;
}

.msg-action.msg-action-ok::after {
  content: "✓";
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ok);
  color: #fff;
  border-radius: 6px;
  font-weight: 800;
  animation: msg-action-flash .9s ease;
}
@keyframes msg-action-flash {
  0%   { opacity: 0; transform: scale(0.8); }
  20%  { opacity: 1; transform: scale(1); }
  80%  { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1); }
}

.msg-action-tag {
  font-size: 11px;
  font-weight: 700;
  font-family: var(--font-display);
  letter-spacing: 0.3px;
  color: inherit;
  opacity: 0.85;
  line-height: 1;
}

/* ============================================================
   Chat head con botón de borrar historial
   ============================================================ */
.chat-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}
.chat-head-titles { flex: 1; min-width: 0; }
.chat-head-clear {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.chat-head-clear iconify-icon { font-size: 16px; display: block; }
.chat-head-clear:hover {
  background: rgba(239,68,68,0.1);
  color: #EF4444;
  border-color: #EF4444;
}

/* Contenedor de los avatares flotantes del equipo. Anclado al
   chat por la esquina inferior derecha, encima del input.
   Apilados verticalmente desde abajo hacia arriba. */
.chat-team-avatars {
  position: absolute;
  /* Anclado al input wrap (que mide ~110-130px) + margen */
  bottom: 150px;
  right: 14px;
  z-index: 30;
  display: flex;
  flex-direction: column-reverse;
  gap: 10px;
  pointer-events: none;
}
.chat-team-avatars:empty { display: none; }

/* Cada avatar individual del equipo. */
.chat-team-avatars .cta-item {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ac, var(--rituo-teal));
  background: var(--bg-1);
  box-shadow: 0 4px 14px rgba(0,0,0,0.4), 0 0 0 1px var(--ac, var(--rituo-teal));
  position: relative;
  animation: cta-item-in .25s ease-out backwards;
}
.chat-team-avatars .cta-item:nth-child(1) { animation-delay: 0ms; }
.chat-team-avatars .cta-item:nth-child(2) { animation-delay: 60ms; }
.chat-team-avatars .cta-item:nth-child(3) { animation-delay: 120ms; }
.chat-team-avatars .cta-item:nth-child(4) { animation-delay: 180ms; }
.chat-team-avatars .cta-item svg { display: block; }
.chat-team-avatars .cta-item .msg-avatar-robot {
  position: relative; z-index: 2; width: 24px; height: 24px;
}
.chat-team-avatars .cta-item .msg-avatar-pulse,
.chat-team-avatars .cta-item .msg-avatar-spinner {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  z-index: 1;
  pointer-events: none;
}
.chat-team-avatars .cta-item .msg-avatar-spinner { display: none; }
.chat-team-avatars .cta-item.is-streaming .msg-avatar-pulse { display: none; }
.chat-team-avatars .cta-item.is-streaming .msg-avatar-spinner { display: block; }

@keyframes cta-item-in {
  from { opacity: 0; transform: scale(0.5) translateX(20px); }
  to   { opacity: 1; transform: scale(1) translateX(0); }
}

/* Mantener compatibilidad con CSS viejo del chat-head-avatar. */
.chat-head-avatar { display: none !important; }
.chat-head-avatar[hidden] { display: none !important; }

/* Cada avatar individual del equipo. */
.chat-head-avatar .cha-item {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ac, var(--rituo-teal));
  background: var(--bg-1);
  box-shadow: 0 4px 14px rgba(0,0,0,0.4), 0 0 0 1px var(--ac, var(--rituo-teal));
  position: relative;
  animation: cha-item-in .25s ease-out backwards;
}
/* Animación escalonada para que los avatares aparezcan en cascada */
.chat-head-avatar .cha-item:nth-child(1) { animation-delay: 0ms; }
.chat-head-avatar .cha-item:nth-child(2) { animation-delay: 60ms; }
.chat-head-avatar .cha-item:nth-child(3) { animation-delay: 120ms; }
.chat-head-avatar .cha-item:nth-child(4) { animation-delay: 180ms; }

.chat-head-avatar .cha-item svg { display: block; }
.chat-head-avatar .cha-item .msg-avatar-robot {
  position: relative;
  z-index: 2;
  width: 24px;
  height: 24px;
}
.chat-head-avatar .cha-item .msg-avatar-pulse,
.chat-head-avatar .cha-item .msg-avatar-spinner {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  z-index: 1;
  pointer-events: none;
}
/* Por defecto (idle): pulse visible, spinner oculto. */
.chat-head-avatar .cha-item .msg-avatar-spinner { display: none; }
/* Cuando este avatar está respondiendo: spinner reemplaza al pulse. */
.chat-head-avatar .cha-item.is-streaming .msg-avatar-pulse { display: none; }
.chat-head-avatar .cha-item.is-streaming .msg-avatar-spinner { display: block; }

@keyframes cha-item-in {
  from { opacity: 0; transform: scale(0.5) translateY(-6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Botón disquete (guardar chat) — al lado del de borrar */
.chat-head-save {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.chat-head-save iconify-icon { font-size: 16px; display: block; }
.chat-head-save:hover {
  background: rgba(39,214,192,0.12);
  color: var(--rituo-teal);
  border-color: var(--rituo-teal);
}

/* ============================================================
   ChatStore — modales, toast, ventana flotante "Mis chats"
   ============================================================ */
/* Modal genérico — z-index por encima de la ventana flotante (pwp = 9400) */
.cs-modal-bg {
  position: fixed; inset: 0; z-index: 9600;
  background: rgba(0,0,0,0.55);
  display: flex; align-items: center; justify-content: center;
  animation: cs-fade .15s ease-out;
}
@keyframes cs-fade { from { opacity: 0 } to { opacity: 1 } }
.cs-modal {
  width: min(440px, 92vw);
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  overflow: hidden;
}
.cs-modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}
.cs-modal-head h3 { margin: 0; font-size: 15px; font-weight: 600; color: var(--text-1); }
.cs-modal-x {
  width: 28px; height: 28px; border-radius: 8px;
  border: none; background: transparent; color: var(--text-3);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
}
.cs-modal-x:hover { background: var(--bg-2); color: var(--text-1); }
.cs-modal-x iconify-icon { font-size: 18px; }
.cs-modal-body { padding: 18px; }
.cs-modal-text { margin: 0; font-size: 14px; line-height: 1.5; color: var(--text-2); }
.cs-modal-input {
  width: 100%; padding: 10px 12px;
  background: var(--bg-2); color: var(--text-1);
  border: 1px solid var(--line); border-radius: 8px;
  font: inherit; font-size: 14px;
  outline: none;
  transition: border-color .12s;
}
.cs-modal-input:focus { border-color: var(--rituo-teal); }
.cs-modal-hint { margin: 8px 0 0; font-size: 12px; color: var(--text-3); }
.cs-modal-foot {
  display: flex; gap: 8px; justify-content: flex-end;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: var(--bg-2);
}
.cs-modal-btn {
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-2);
  font: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: background .12s, border-color .12s, color .12s;
}
.cs-modal-btn:hover { background: var(--bg-1); color: var(--text-1); }
.cs-modal-btn.cs-primary {
  background: var(--rituo-teal);
  border-color: var(--rituo-teal);
  color: #0b2a26;
}
.cs-modal-btn.cs-primary:hover { filter: brightness(1.08); }
.cs-modal-btn.cs-danger {
  background: rgba(239,68,68,0.12);
  border-color: rgba(239,68,68,0.4);
  color: #EF4444;
}
.cs-modal-btn.cs-danger:hover {
  background: #EF4444;
  border-color: #EF4444;
  color: #fff;
}

/* Toast */
.cs-toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--bg-1);
  border: 1px solid var(--line);
  color: var(--text-1);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 13px;
  z-index: 9700;
  opacity: 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
}
.cs-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Lista de chats — va dentro de un .pwp-body (hereda chrome de Pipeline) */
.cs-list { display: flex; flex-direction: column; gap: 8px; }
.cs-row {
  --lang: var(--rituo-teal);
  position: relative;
  display: flex; align-items: stretch; gap: 10px;
  padding: 12px 14px 12px 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: background .15s, border-color .15s, transform .12s;
  overflow: hidden;
}
.cs-row::before {
  /* Tira lateral con el color del lenguaje */
  content: "";
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--lang);
}
.cs-row:hover {
  background: rgba(255,255,255,0.04);
  border-color: var(--lang);
  transform: translateY(-1px);
}
.cs-row-active {
  background: rgba(39,214,192,0.06);
  border-color: var(--lang);
  box-shadow: 0 0 0 1px var(--lang);
}
.cs-row-main { flex: 1; min-width: 0; cursor: pointer; }
.cs-row-head {
  display: flex; align-items: center; gap: 8px;
  margin-bottom: 4px;
}
.cs-row-pill {
  flex-shrink: 0;
  font-family: var(--font-display, inherit);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  border: 1px solid currentColor;
}
.cs-row-pill-html { color: #E34F26; }
.cs-row-pill-css  { color: #1572B6; }
.cs-row-pill-js   { color: #C9A227; }
.cs-row-name {
  flex: 1; min-width: 0;
  font-size: 14px; font-weight: 700;
  color: var(--lang);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  letter-spacing: 0.1px;
}
.cs-row-prev {
  font-size: 12px; color: var(--text-2);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 4px;
}
.cs-row-meta {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; color: var(--text-3);
}
.cs-dot {
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--text-3);
  display: inline-block;
}
.cs-row-del {
  flex-shrink: 0;
  width: 34px;
  align-self: center;
  height: 34px; border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-3);
  display: inline-flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.cs-row-del:hover {
  background: rgba(239,68,68,0.12);
  color: #EF4444;
  border-color: rgba(239,68,68,0.4);
}
.cs-row-del iconify-icon { font-size: 18px; }

/* Empty state */
.cs-empty {
  padding: 36px 24px;
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
  line-height: 1.5;
}
.cs-empty p { margin: 0; }
.cs-empty-ico {
  display: inline-flex; align-items: center; justify-content: center;
  width: 64px; height: 64px;
  margin: 0 auto 14px;
  background: rgba(39,214,192,0.06);
  border: 1px solid rgba(39,214,192,0.2);
  border-radius: 50%;
}
.cs-empty-ico iconify-icon { font-size: 28px; color: var(--rituo-teal); }

/* ============================================================
   Botón "Escuchar" flotante mientras suena la clase
   ============================================================ */
#btn-listen {
  transition: background .15s, color .15s, transform .15s, box-shadow .2s;
}
#btn-listen.is-listening {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 9000;
  background: var(--lang-active, var(--rituo-red));
  color: #fff;
  border-color: var(--lang-active, var(--rituo-red));
  box-shadow: 0 12px 32px rgba(0,0,0,0.45), 0 0 0 4px color-mix(in srgb, var(--lang-active, var(--rituo-red)) 30%, transparent);
  padding: 10px 18px;
  height: 42px;
  font-weight: 800;
  letter-spacing: 0.4px;
  animation: listen-pulse 1.6s ease-in-out infinite;
}
#btn-listen.is-listening:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}
@keyframes listen-pulse {
  0%, 100% { box-shadow: 0 12px 32px rgba(0,0,0,0.45), 0 0 0 4px color-mix(in srgb, var(--lang-active, var(--rituo-red)) 30%, transparent); }
  50%      { box-shadow: 0 14px 36px rgba(0,0,0,0.55), 0 0 0 10px color-mix(in srgb, var(--lang-active, var(--rituo-red)) 0%, transparent); }
}

/* ============================================================
   Caja de pegado de API key (siempre visible en pantalla paste)
   ============================================================ */
.pf-paste-box {
  margin: 14px 0 6px;
  padding: 14px;
  background: var(--bg-2);
  border: 1px solid var(--brand-mid, var(--line-strong));
  border-radius: 12px;
  box-shadow: 0 0 0 4px var(--brand-soft, transparent);
}
.pf-paste-label {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 12px;
  color: var(--text-2);
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.pf-paste-input {
  width: 100%;
  min-height: 56px;
  padding: 10px 12px;
  background: var(--bg-1);
  border: 2px solid var(--line-strong);
  border-radius: 10px;
  color: var(--text-0);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.pf-paste-input:focus {
  border-color: var(--brand, var(--rituo-teal));
  box-shadow: 0 0 0 3px var(--brand-soft, rgba(39,214,192,0.15));
}
.pf-paste-input::placeholder { color: var(--text-3); }
.pf-paste-actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

/* Botón "Eliminar API key actual" en la pantalla de paste */
.pf-btn-delete-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 14px;
  height: 44px;
  padding: 0 16px;
  border-radius: 12px;
  background: rgba(192,0,26,0.08);
  border: 1px solid rgba(192,0,26,0.4);
  color: #ff7080;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: background .12s, border-color .12s;
}
.pf-btn-delete-key:hover {
  background: rgba(192,0,26,0.18);
  border-color: rgba(192,0,26,0.7);
}

/* Scrollbar más ancha en el textarea de paste — antes era 6px nativo
   y casi no se podía agarrar. Ahora 14px clickable. */
.pf-paste-input::-webkit-scrollbar {
  width: 14px;
}
.pf-paste-input::-webkit-scrollbar-thumb {
  background: var(--brand-mid, var(--line-strong));
  border-radius: 8px;
  border: 3px solid var(--bg-1);
  background-clip: padding-box;
}
.pf-paste-input::-webkit-scrollbar-thumb:hover {
  background: var(--brand, var(--rituo-teal));
  background-clip: padding-box;
}
.pf-paste-input::-webkit-scrollbar-track { background: transparent; }
.pf-paste-input { scrollbar-width: auto; scrollbar-color: var(--brand-mid, var(--line-strong)) transparent; }

/* Flecha animada de la guía: la hago más prominente para que llame
   la atención al "Iniciar conexión" o al "Pegar mi API key". */
.pf-arrow {
  display: flex;
  justify-content: center;
  margin: 14px 0 6px;
  color: var(--brand);
}
.pf-arrow-bouncing {
  display: inline-flex;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--brand-soft);
  align-items: center;
  justify-content: center;
  animation: pf-arrow-bounce 1.1s ease-in-out infinite;
}
.pf-arrow-bouncing svg { color: var(--brand); width: 28px; height: 28px; }
@keyframes pf-arrow-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(8px); }
}

/* Botones "Mujer" / "Hombre" del header de la lección.
   El que está sonando se tiñe con el color del lenguaje activo
   y queda flotante arriba a la derecha mientras dura la lectura. */
.btn-listen-voice {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  height: 26px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.btn-listen-voice iconify-icon { font-size: 13px; }
.btn-listen-voice.is-listening {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 9000;
  background: var(--lang-active, var(--rituo-red));
  color: #fff;
  border-color: var(--lang-active, var(--rituo-red));
  padding: 5px 12px;
  height: 30px;
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.3px;
  border-radius: 999px;
  box-shadow: 0 6px 18px color-mix(in srgb, var(--lang-active, var(--rituo-red)) 35%, transparent);
  /* Animación nueva: barrido luminoso horizontal (estilo "leyendo")
     en lugar del shadow expandiéndose viejo. Más prolijo, no crece. */
  background-image: linear-gradient(90deg,
    transparent 0%,
    rgba(255,255,255,0.18) 50%,
    transparent 100%);
  background-size: 50% 100%;
  background-repeat: no-repeat;
  background-position: -50% 0;
  animation: listen-sweep 1.4s ease-in-out infinite;
  overflow: hidden;
}
@keyframes listen-sweep {
  0%   { background-position: -50% 0; }
  100% { background-position: 150% 0; }
}
/* Equalizer chiquito al lado del icono mientras suena */
.btn-listen-voice.is-listening iconify-icon { display: none; }
.btn-listen-voice.is-listening::before {
  content: "";
  display: inline-block;
  width: 14px; height: 12px;
  margin-right: 3px;
  background:
    linear-gradient(currentColor, currentColor) left center / 2px 30% no-repeat,
    linear-gradient(currentColor, currentColor) 33% center / 2px 70% no-repeat,
    linear-gradient(currentColor, currentColor) 66% center / 2px 50% no-repeat,
    linear-gradient(currentColor, currentColor) right center / 2px 90% no-repeat;
  animation: listen-eq 0.85s ease-in-out infinite;
}
@keyframes listen-eq {
  0%, 100% { background-size: 2px 30%, 2px 70%, 2px 50%, 2px 90%; }
  50%      { background-size: 2px 90%, 2px 30%, 2px 80%, 2px 40%; }
}
.btn-listen-voice.is-listening:hover { filter: brightness(1.1); }
.btn-listen-voice.is-listening .btn-voice-label::after {
  content: " · Detener";
  font-weight: 700;
  opacity: 0.85;
}

/* Resaltado del bloque del body que se está leyendo en este momento. */
.lesson-narrating {
  position: relative;
  background: var(--brand-soft, rgba(39,214,192,0.08));
  border-left: 3px solid var(--lang-active, var(--rituo-teal));
  padding-left: 14px;
  border-radius: 4px;
  transition: background .25s ease, border-color .25s ease;
  scroll-margin-top: 80px;
  scroll-margin-bottom: 80px;
}

/* ============================================================
   Manija de resize del chat (borde izquierdo)
   ============================================================ */
.chat { position: relative; }
.chat-resize {
  position: absolute;
  top: 0; bottom: 0;
  left: 0;
  width: 6px;
  cursor: ew-resize;
  z-index: 50;
  background: transparent;
  transition: background .15s;
}
.chat-resize::before {
  content: "";
  position: absolute;
  left: 1px; top: 50%;
  width: 3px; height: 60px;
  border-radius: 999px;
  background: var(--line-strong);
  transform: translateY(-50%);
  opacity: 0.6;
  transition: opacity .15s, background .15s;
}
.chat-resize:hover {
  background: rgba(39,214,192,0.08);
}
.chat-resize:hover::before {
  background: var(--rituo-teal);
  opacity: 1;
}
.chat-resize.dragging::before { background: var(--rituo-teal); opacity: 1; }

/* ============================================================
   Tilde verde grande de "Lección completada" + botón verde
   ============================================================ */
.lesson-completed-mark {
  display: inline-block;
  width: 32px;
  height: 32px;
  margin-left: 14px;
  vertical-align: middle;
  opacity: 0;
  transform: scale(0.4) rotate(-30deg);
  transition: opacity .35s ease, transform .55s cubic-bezier(.34,1.56,.64,1);
  filter: drop-shadow(0 4px 12px rgba(50,186,124,0.45));
}
.lesson-completed-mark.show {
  opacity: 1;
  transform: scale(1) rotate(0);
  animation: lesson-mark-pulse 2.2s 0.6s ease-in-out 2;
}
.lesson-completed-mark svg { width: 100%; height: 100%; display: block; }
@keyframes lesson-mark-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.1); filter: drop-shadow(0 6px 18px rgba(50,186,124,0.7)); }
}

/* Estado por defecto: igual a "Anterior" y "Siguiente" del footer
   (.btn base — bg-2 con border line). Al hover pasa a verde
   sólido con sombra para indicar que va a marcar completada. */
#btn-complete {
  background: var(--bg-2) !important;
  background-image: none !important;
  border: 1px solid var(--line) !important;
  color: var(--text-1) !important;
  font-weight: 700;
  box-shadow: none !important;
  transition: background .14s, color .14s, box-shadow .14s, transform .14s, border-color .14s;
}
#btn-complete:hover {
  background: #32BA7C !important;
  color: #fff !important;
  border-color: #32BA7C !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(50,186,124,0.4) !important;
}
#btn-complete svg { color: var(--text-1); }
#btn-complete:hover svg { color: #fff; }

#btn-complete.is-done {
  background: #32BA7C;
  border-color: #32BA7C;
  color: #fff;
  font-weight: 800;
  font-size: 13.5px;
  letter-spacing: 0.4px;
  padding: 8px 22px;
  box-shadow: 0 8px 22px rgba(50,186,124,0.45), 0 0 0 4px rgba(50,186,124,0.15);
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  /* Barrido de luz horizontal continuo mientras está en estado done */
  background-image: linear-gradient(90deg,
    transparent 0%,
    rgba(255,255,255,0.22) 50%,
    transparent 100%);
  background-size: 50% 100%;
  background-repeat: no-repeat;
  background-position: -50% 0;
  animation: listen-sweep 1.8s ease-in-out infinite;
}
/* Badge: shield-check (mismo SVG que el nav) en blanco, sin fondo
   circular. Se ve directamente sobre el fondo verde del botón. */
#btn-complete .btn-complete-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.25));
}
#btn-complete .btn-complete-badge svg { display: block; }

/* Pop notable cuando recién se completa */
#btn-complete.is-done-pop { animation: complete-pop 0.7s cubic-bezier(.34,1.56,.64,1), listen-sweep 1.8s 0.7s ease-in-out infinite; }
@keyframes complete-pop {
  0%   { transform: scale(0.85); }
  50%  { transform: scale(1.12); box-shadow: 0 12px 40px rgba(50,186,124,0.7), 0 0 0 10px rgba(50,186,124,0.25); }
  100% { transform: scale(1); }
}