/* ============================================================
   Academia de Ventas Iberlux · Sistema de diseño (modo oscuro)
   Portado desde carriers/F&G/capacitacion_ventas_fyg.html
   Fuente de tokens: sistema_iberlux/_docs/IBERLUX_BRAND.md
   Sin fuentes web (CSP-blocked) · stack de fuente nativa del sistema
   ============================================================ */

:root{
  /* Iberlux brand · dark-committed */
  --bg:#0A0A0A; --bg-2:#111113; --card:#161619; --card-2:#1F1F23;
  --ink:#FAFAFA; --ink-soft:#D4D4D8; --muted:#A1A1AA;
  --line:#27272A; --line-2:#3F3F46;
  --violet:#8B5CF6; --violet-soft:#A78BFA;
  --cyan:#22D3EE; --cyan-soft:#67E8F9;
  --green:#34D399; --yellow:#FCD34D; --red:#F87171;
  --grad:linear-gradient(135deg,#8B5CF6,#22D3EE);
  --shadow:0 1px 2px rgba(0,0,0,.4),0 18px 40px -22px rgba(0,0,0,.8);
  --radius:14px; --maxw:1080px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",system-ui,Arial,sans-serif;
  --mono:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",system-ui,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}

h1,h2,h3,h4,h5,h6{
  font-family:var(--sans);
  font-weight:700;
  line-height:1.2;
  letter-spacing:-.02em;
  margin:0 0 .5em;
  color:var(--ink);
}

p{margin:0 0 .85em;color:var(--ink-soft)}

a{color:var(--cyan-soft);text-decoration:none}
a:hover{text-decoration:underline}

ul,ol{margin:0 0 .85em;padding-left:1.4em;color:var(--ink-soft)}
li{margin:.25em 0}

.eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan-soft);
  font-weight:600;
}

.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
}

/* ---- nav ---- */
.nav{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(10,10,10,.82);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{
  display:flex;
  gap:4px;
  overflow-x:auto;
  padding-top:9px;
  padding-bottom:9px;
  scrollbar-width:thin;
}
.nav a{
  flex:0 0 auto;
  font-size:13px;
  font-weight:600;
  color:var(--muted);
  padding:6px 12px;
  border-radius:8px;
  white-space:nowrap;
  text-decoration:none;
}
.nav a:hover,
.nav a.active{
  background:var(--card-2);
  color:var(--cyan-soft);
}

/* ---- card ---- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:var(--shadow);
}

/* ---- ficha (info panel with header + body) ---- */
.ficha{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  margin-bottom:22px;
}
.ficha > .top{
  padding:20px 24px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(139,92,246,.08),transparent);
}
.ficha > .body{padding:22px 24px}
.ficha h4{font-size:20px;margin:0 0 6px}
.ficha .oneline{color:var(--ink-soft);font-size:15px;margin:0}

dl.data{
  margin:0;
  display:grid;
  grid-template-columns:auto 1fr;
  gap:6px 14px;
  font-size:13.5px;
}
dl.data dt{color:var(--muted);font-weight:600;margin:0}
dl.data dd{margin:0;text-align:right;font-variant-numeric:tabular-nums;color:var(--ink)}

/* ---- button ---- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--grad);
  color:#0A0A0A;
  font-weight:700;
  font-size:14.5px;
  padding:11px 22px;
  border-radius:10px;
  border:none;
  cursor:pointer;
  text-decoration:none;
  box-shadow:0 4px 14px rgba(139,92,246,.4);
}
.btn:hover{filter:brightness(1.08);text-decoration:none}
.btn:active{filter:brightness(.96)}

/* ---- lesson article ---- */
.lesson{margin:0 0 40px}
.lesson h2{font-size:clamp(22px,3vw,32px);margin-bottom:.4em}
.lesson h3{font-size:20px;margin:1.6em 0 .6em}
.lesson p{font-size:16px;color:var(--ink-soft)}

/* ---- cita (pull quote) ---- */
.cita{
  margin:20px 0;
  border-left:3px solid var(--cyan);
  background:rgba(34,211,238,.07);
  border-radius:0 10px 10px 0;
  padding:14px 18px;
  font-size:15px;
  font-style:italic;
  color:var(--ink);
}
.cita p{margin:0;color:var(--ink);font-style:italic}
.cita footer,
.cita cite{
  display:block;
  margin-top:8px;
  font-style:normal;
  font-size:12.5px;
  color:var(--muted);
}

/* ---- audio player ---- */
.audio-player{
  display:flex;
  align-items:center;
  gap:14px;
  background:var(--card-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:14px 18px;
}
.audio-player button{
  flex:0 0 auto;
  width:40px;
  height:40px;
  border-radius:50%;
  border:none;
  background:var(--grad);
  color:#0A0A0A;
  display:grid;
  place-items:center;
  cursor:pointer;
  font-size:16px;
}
.audio-player button:hover{filter:brightness(1.08)}
.audio-player .track{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px}
.audio-player progress,
.audio-player input[type="range"]{width:100%;accent-color:var(--violet)}
.audio-time{
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}

/* ============================================================
   Layout · barra lateral + escenario karaoke
   ============================================================ */

html,body{height:100%}

#app.layout{
  display:flex;
  height:100vh;
  height:100dvh;
  overflow:hidden;
  background:var(--bg);
}

/* ---- sidebar ---- */
.sidebar{
  flex:0 0 300px;
  width:300px;
  height:100%;
  overflow-y:auto;
  overflow-x:hidden;
  background:var(--bg-2);
  border-right:1px solid var(--line);
  scrollbar-width:thin;
  scrollbar-color:var(--line-2) transparent;
  padding-bottom:24px;
}
.sidebar::-webkit-scrollbar{width:8px}
.sidebar::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:8px}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:22px 20px 16px;
  position:sticky;
  top:0;
  background:var(--bg-2);
  z-index:2;
  border-bottom:1px solid var(--line);
  margin-bottom:10px;
}
.brand-dot{
  width:12px;height:12px;border-radius:50%;
  background:var(--grad);
  box-shadow:0 0 0 4px rgba(139,92,246,.14);
  flex:0 0 auto;
}
.brand-name{
  font-weight:700;
  font-size:14.5px;
  letter-spacing:-.01em;
  color:var(--ink);
}

.sidebar-nav{padding:4px 0 12px}

.nav-group-title,
.nav-carrier-title{
  font-family:var(--mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--muted);
  padding:16px 20px 6px;
}
.nav-carrier-title{
  color:var(--cyan-soft);
  margin-top:6px;
  padding-top:20px;
  border-top:1px solid var(--line);
}

.nav-link{
  display:flex;
  align-items:center;
  gap:8px;
  margin:1px 10px;
  padding:9px 12px;
  border-radius:9px;
  border-left:3px solid transparent;
  color:var(--muted);
  font-size:13.5px;
  font-weight:600;
  line-height:1.35;
  text-decoration:none;
  transition:background .15s ease,color .15s ease,border-color .15s ease;
}
.nav-link:hover{
  background:var(--card-2);
  color:var(--ink-soft);
  text-decoration:none;
}
.nav-link.active{
  background:linear-gradient(90deg,rgba(139,92,246,.18),rgba(34,211,238,.05));
  border-left-color:var(--violet);
  color:var(--ink);
}
.nav-icon{font-size:12px;flex:0 0 auto}
.nav-link-text{min-width:0}

/* ---- stage ---- */
.stage{
  flex:1 1 auto;
  min-width:0;
  height:100%;
  display:flex;
  flex-direction:column;
  overflow:hidden;
  padding:36px 48px 28px;
}

.stage-header{flex:0 0 auto;margin-bottom:12px}
.stage-title{
  font-size:clamp(24px,3.4vw,36px);
  margin:.15em 0 0;
}

.stage-body{
  flex:1 1 auto;
  min-height:0;
  display:flex;
  flex-direction:column;
}

.stage-empty{color:var(--muted);font-size:15px}

/* ---- karaoke ---- */
.karaoke{
  flex:1 1 auto;
  min-height:0;
  display:flex;
  flex-direction:column;
  gap:22px;
}

.karaoke-scroll{
  flex:1 1 auto;
  min-height:0;
  overflow-y:auto;
  scrollbar-width:none;
  padding:8vh 4px;
  mask-image:linear-gradient(to bottom,transparent 0,#000 12%,#000 88%,transparent 100%);
  -webkit-mask-image:linear-gradient(to bottom,transparent 0,#000 12%,#000 88%,transparent 100%);
}
.karaoke-scroll::-webkit-scrollbar{display:none}

.karaoke-text{
  max-width:820px;
  margin:0 auto;
  font-size:clamp(22px,3.2vw,34px);
  font-weight:600;
  line-height:1.65;
  letter-spacing:-.01em;
  color:var(--muted);
}
.karaoke-text--plain{color:var(--ink-soft)}

.word{transition:color .18s ease,opacity .18s ease}
.word--clickable{cursor:pointer}
.word.upcoming{color:var(--muted)}
.word.spoken{color:var(--ink)}
.word.active{
  background:var(--grad);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
  color:transparent;
  font-weight:700;
}

/* ---- player controls ---- */
.player-controls{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:14px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:14px 22px;
}

.player-btn{
  flex:0 0 auto;
  border:none;
  cursor:pointer;
  display:grid;
  place-items:center;
  font-weight:700;
  color:#0A0A0A;
}
.player-play{
  width:52px;height:52px;
  border-radius:50%;
  background:var(--grad);
  font-size:18px;
  box-shadow:0 4px 18px rgba(139,92,246,.45);
}
.player-play:hover{filter:brightness(1.08)}
.player-play:active{filter:brightness(.96)}

.player-seek{
  width:38px;height:38px;
  border-radius:50%;
  background:var(--card-2);
  color:var(--ink-soft);
  font-size:11px;
  border:1px solid var(--line-2);
}
.player-seek:hover{color:var(--ink);border-color:var(--violet-soft)}

.player-range{flex:1 1 auto;min-width:0;accent-color:var(--violet)}

.player-time{
  font-family:var(--mono);
  font-size:12.5px;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
}

@media (max-width:860px){
  #app.layout{flex-direction:column;height:auto;min-height:100vh;overflow:visible}
  .sidebar{
    flex:0 0 auto;
    width:100%;
    height:auto;
    max-height:38vh;
    border-right:none;
    border-bottom:1px solid var(--line);
  }
  .stage{height:auto;padding:24px 20px}
  .karaoke-scroll{padding:4vh 4px}
}

/* ---- botón "seguir la voz" (aparece si el usuario deslizó a mano) ---- */
.karaoke{position:relative}
.karaoke-follow{
  position:absolute;
  left:50%;
  bottom:104px;
  transform:translateX(-50%);
  z-index:5;
  border:none;
  cursor:pointer;
  background:var(--grad);
  color:#0A0A0A;
  font-weight:700;
  font-size:13px;
  letter-spacing:.01em;
  padding:9px 18px;
  border-radius:999px;
  box-shadow:0 8px 24px rgba(0,0,0,.45);
}
.karaoke-follow[hidden]{display:none}
@media (max-width:860px){ .karaoke-follow{bottom:124px} }

/* ===== Distinción visual: barra lateral (panel) vs teleprompter (pantalla) ===== */
.sidebar{
  background:linear-gradient(180deg,#191622 0%,#141119 55%,#100f15 100%);
  border-right:1px solid var(--line-2);
  box-shadow:10px 0 30px -16px rgba(0,0,0,.7);
}
.brand{
  background:#191622;
  border-bottom:1px solid var(--line-2);
}
.nav-carrier-title{border-top-color:var(--line-2)}

/* El teleprompter se enmarca como una pantalla independiente */
.stage{padding:26px 34px 24px}
.karaoke{
  background:
    radial-gradient(120% 70% at 50% -6%, rgba(139,92,246,.07), transparent 55%),
    #0c0b10;
  border:1px solid var(--line);
  border-radius:22px;
  padding:6px 26px 18px;
  box-shadow:0 24px 60px -34px rgba(0,0,0,.85), inset 0 1px 0 rgba(255,255,255,.03);
}
.player-controls{background:var(--card-2)}

/* ===== Barra lateral con fondo violeta claramente distinto del teleprompter ===== */
.sidebar{
  background:linear-gradient(180deg,#241d3a 0%,#1b1530 100%);
  border-right:1px solid #382c55;
  box-shadow:12px 0 34px -16px rgba(0,0,0,.75);
}
.brand{
  background:#241d3a;
  border-bottom:1px solid #382c55;
}
.nav-carrier-title{border-top-color:#382c55}
.nav-link:hover{background:rgba(139,92,246,.16)}
.nav-link.active{background:linear-gradient(90deg,rgba(139,92,246,.32),rgba(34,211,238,.08))}