/* ══════════════════════════════════════════════════════════
   TOKENS — idénticos a los del portal ORIGEN (index.html).
   No se modifica ni se agrega ningún color principal nuevo;
   esta materia usa la misma paleta (verde / crema / terracota /
   mostaza / oliva) ya establecida.
   ══════════════════════════════════════════════════════════ */
:root{
  --verde:     #1F2D2A;
  --verde-deep:#141F1C;
  --verde2:    #2B3F3B;
  --terracota: #7A5D3A;
  --terracota2:#9A7A52;
  --beige:     #C9B79A;
  --crema:     #FAF7F0;
  --oliva:     #6B7A4A;
  --salvia:    #A7B89A;
  --mostaza:   #C49A3A;
  --tx-muted:  #6E7A72;
  --line:      rgba(31,45,42,0.12);
  --r: 14px;
  --t: .2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:'Poppins',sans-serif;background:var(--verde);color:var(--crema);line-height:1.65;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
button{font-family:'Poppins',sans-serif;}
ul{list-style:none;}

/* ══ LAYOUT: sidebar + main (idéntico al patrón de navegación de ORIGEN) ══ */
.app-layout{display:flex; min-height:100vh;}

/* ══ SIDEBAR ══ */
.sidebar{
  width:250px; flex-shrink:0; background:var(--verde-deep);
  border-right:1px solid rgba(250,247,240,.08);
  display:flex; flex-direction:column; padding:26px 20px;
  position:sticky; top:0; height:100vh; overflow-y:auto;
}
.sidebar-mobile-toggle{display:none; background:none; border:1px solid rgba(250,247,240,.2); color:var(--crema); width:38px; height:38px; border-radius:10px; align-items:center; justify-content:center; font-size:18px; cursor:pointer; flex-shrink:0;}

@media(max-width:840px){
  .app-layout{flex-direction:column;}
  .sidebar{
    width:100%; height:auto; position:relative; top:auto;
    flex-direction:row; align-items:center; flex-wrap:wrap; padding:14px 20px;
  }
  .sidebar-brand{margin-bottom:0; margin-right:auto;}
  .sidebar-mobile-toggle{display:flex;}
  .sidebar-collapsible{
    display:none; width:100%; flex-direction:column;
    margin-top:14px; padding-top:14px; border-top:1px solid rgba(250,247,240,.08);
  }
  .sidebar-collapsible.open{display:flex;}
  .progress-card, .guide-card, .setup-card{margin-top:0;}
}
.ring{border-radius:50%;background:conic-gradient(from 200deg, var(--verde) 0%, var(--verde) 45%, var(--terracota) 75%, var(--terracota) 100%);position:relative;flex-shrink:0;}
.ring::after{content:'';position:absolute;inset:26%;background:var(--verde-deep);border-radius:50%;}
.sidebar-brand{display:flex;align-items:center;gap:10px;margin-bottom:30px;}
.sidebar-brand .ring{width:32px;height:32px;}
.sidebar-brand-text{font-weight:700;font-size:17px;letter-spacing:-.01em;}
.sidebar-brand-tag{font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--salvia);opacity:.75;}

.sidebar-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:24px;}
.sidebar-nav a{
  display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:10px;
  font-size:13.5px;font-weight:500;color:var(--salvia);transition:var(--t);
}
.sidebar-nav a:hover{background:rgba(250,247,240,.06);color:var(--crema);}
.sidebar-nav a.active{background:rgba(196,154,58,.14);color:var(--mostaza);font-weight:600;}
.sidebar-nav a .ic{width:16px;text-align:center;font-size:14px;}

.sidebar-divider{height:1px;background:rgba(250,247,240,.08);margin:6px 0 18px;}

/* Widget de progreso */
.progress-card{background:rgba(250,247,240,.04);border:1px solid rgba(250,247,240,.08);border-radius:16px;padding:18px;margin-bottom:16px;}
.progress-card h4{font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--salvia);margin-bottom:14px;}
.progress-ring-wrap{display:flex;justify-content:center;margin-bottom:10px;}
.progress-ring{width:96px;height:96px;border-radius:50%;display:flex;align-items:center;justify-content:center;position:relative;}
.progress-ring-value{font-size:22px;font-weight:700;color:var(--crema);}
.progress-sub{text-align:center;font-size:11.5px;color:var(--salvia);opacity:.85;}

/* Tarjeta del guía elegido */
.guide-card{background:rgba(250,247,240,.04);border:1px solid rgba(250,247,240,.08);border-radius:16px;padding:16px;margin-top:auto;}
.guide-card h4{font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--salvia);margin-bottom:12px;}
.guide-card-body{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.guide-avatar-img{width:52px;height:52px;border-radius:50%;background:var(--terracota2);flex-shrink:0;object-fit:cover;}
.guide-card-name{font-size:13.5px;font-weight:600;color:var(--crema);}
.guide-card-msg{font-size:11.5px;color:var(--salvia);line-height:1.5;}
.btn-guide{width:100%;background:none;border:1.5px solid var(--mostaza);color:var(--mostaza);padding:8px;border-radius:10px;font-size:12.5px;font-weight:600;cursor:pointer;transition:var(--t);}
.btn-guide:hover{background:var(--mostaza);color:var(--verde-deep);}

/* Setup rápido de alias/guía (solo la primera vez en esta materia/sesión) */
.setup-card{background:rgba(196,154,58,.08);border:1.5px dashed rgba(196,154,58,.4);border-radius:16px;padding:16px;margin-top:auto;}
.setup-card h4{font-size:11.5px;font-weight:700;color:var(--mostaza);margin-bottom:4px;}
.setup-card p{font-size:11px;color:var(--salvia);margin-bottom:10px;line-height:1.5;}
.setup-card input{width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:12.5px;font-family:'Poppins',sans-serif;background:var(--crema);color:var(--verde);margin-bottom:8px;}
.setup-guides{display:flex;gap:6px;margin-bottom:10px;}
.setup-guide-opt{flex:1;background:rgba(250,247,240,.06);border:1.5px solid rgba(250,247,240,.15);border-radius:8px;padding:7px 4px;text-align:center;cursor:pointer;font-size:10.5px;color:var(--salvia);transition:var(--t);}
.setup-guide-opt.selected{border-color:var(--mostaza);background:rgba(196,154,58,.16);color:var(--mostaza);}
.setup-guide-opt .sg-avatar{display:block;font-size:16px;margin-bottom:2px;}
.btn-setup-save{width:100%;background:var(--mostaza);color:var(--verde-deep);border:none;padding:8px;border-radius:8px;font-size:12.5px;font-weight:700;cursor:pointer;}

/* ══ MAIN ══ */
.main{flex:1; min-width:0;}
.topbar{display:flex;align-items:center;justify-content:flex-end;gap:14px;padding:20px 40px 0;}
.search-box{flex:1;max-width:360px;display:flex;align-items:center;gap:8px;background:rgba(250,247,240,.06);border:1px solid rgba(250,247,240,.12);border-radius:30px;padding:9px 16px;margin-right:auto;}
.search-box input{background:none;border:none;outline:none;color:var(--crema);font-family:'Poppins',sans-serif;font-size:13px;width:100%;}
.search-box input::placeholder{color:var(--salvia);opacity:.7;}
.icon-btn{width:38px;height:38px;border-radius:50%;background:rgba(250,247,240,.06);border:1px solid rgba(250,247,240,.12);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--salvia);}
.topbar-avatar{width:38px;height:38px;border-radius:50%;object-fit:cover;border:1.5px solid var(--mostaza);}

/* ══ HERO — franja cronológica como elemento propio de Historia
   (reemplaza el collage fotorrealista de la referencia por un
   recurso construido en CSS, ya que la imagen era solo objetivo
   visual y no un archivo reproducible). ══ */
.hero{padding:26px 40px 10px;}
.hero-eyebrow{font-size:12px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--mostaza);margin-bottom:10px;}
.hero h1{font-size:clamp(40px,6vw,64px);font-weight:800;letter-spacing:-.02em;line-height:1;margin-bottom:10px;}
.hero-sub{font-size:16px;color:var(--salvia);max-width:640px;margin-bottom:26px;}
.hero-banner{width:100%;height:190px;object-fit:cover;border-radius:18px;margin-bottom:14px;display:block;border:1px solid rgba(250,247,240,.1);}
.era-labels{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;padding:0 4px;margin-bottom:20px;}
.era-labels span{font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--salvia);opacity:.85;}

.hero-quote{font-size:14px;font-style:italic;color:var(--salvia);opacity:.85;max-width:520px;margin-top:14px;}

/* ══ INTRO PILARES (mismo lenguaje visual que el resto de ORIGEN) ══ */
.pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding:28px 40px;}
.pillar{background:var(--verde2);border:1px solid rgba(250,247,240,.1);border-radius:16px;padding:20px;}
.pillar-ic{font-size:22px;margin-bottom:10px;}
.pillar h3{font-size:13.5px;font-weight:600;margin-bottom:5px;}
.pillar p{font-size:12px;color:var(--salvia);line-height:1.5;}
@media(max-width:900px){.pillars{grid-template-columns:1fr 1fr;}}
@media(max-width:480px){.pillars{grid-template-columns:1fr;}}

/* ══ GRID DE TEMAS ══ */
.topics-section{padding:10px 40px 36px;}
.topics-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;flex-wrap:wrap;gap:10px;}
.topics-head h2{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--mostaza);}
.topics-count{font-size:12px;color:var(--salvia);}

.topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
@media(max-width:1100px){.topics-grid{grid-template-columns:repeat(3,1fr);}}
@media(max-width:760px){.topics-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:480px){.topics-grid{grid-template-columns:1fr;}}

.topic-card{
  background:var(--verde2); border:1px solid rgba(250,247,240,.1); border-radius:18px;
  overflow:hidden; display:flex; flex-direction:column; transition:var(--t); cursor:pointer;
}
.topic-card:hover{border-color:var(--mostaza); transform:translateY(-3px);}
.topic-visual{
  height:104px; display:flex; align-items:center; justify-content:center; font-size:38px;
  position:relative;
}
.topic-num{position:absolute; top:10px; left:12px; font-size:10px; font-weight:700; letter-spacing:.08em; color:rgba(250,247,240,.55);}
.topic-body{padding:14px 16px 16px; display:flex; flex-direction:column; gap:6px; flex:1;}
.topic-title{font-size:15px;font-weight:700;}
.topic-desc{font-size:12px;color:var(--salvia);line-height:1.45;min-height:34px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.topic-meta{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--tx-muted);margin-top:2px;}
.topic-status{font-weight:600;}
.topic-status.available{color:var(--mostaza);}
.topic-status.soon{color:var(--tx-muted);}
.topic-bar-wrap{height:5px;background:rgba(250,247,240,.1);border-radius:3px;overflow:hidden;margin-top:2px;}
.topic-bar{height:100%;background:var(--mostaza);border-radius:3px;}
.topic-btn{
  margin-top:auto; width:100%; background:var(--mostaza); color:var(--verde-deep);
  border:none; padding:9px; border-radius:10px; font-size:12.5px; font-weight:700; cursor:pointer; transition:var(--t);
}
.topic-btn:hover{background:var(--terracota2);}
.topic-btn.soon{background:rgba(250,247,240,.1); color:var(--salvia);}
.topic-btn.soon:hover{background:rgba(250,247,240,.16);}

/* ══ FOOTER — cómo vas a aprender / viaje en el tiempo / CTA ══ */
.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:18px;padding:0 40px 40px;}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr;}}
.foot-card{background:var(--verde2);border:1px solid rgba(250,247,240,.1);border-radius:16px;padding:22px;}
.foot-card h3{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--mostaza);margin-bottom:16px;}
.steps-row{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;}
.step{text-align:center;flex:1;min-width:64px;}
.step-ic{width:34px;height:34px;border-radius:50%;background:rgba(196,154,58,.14);color:var(--mostaza);display:flex;align-items:center;justify-content:center;margin:0 auto 6px;font-size:14px;}
.step span{font-size:11px;color:var(--salvia);display:block;}
.timeline-mini{display:flex;align-items:center;gap:4px;margin:10px 0 8px;}
.tl-dot{width:9px;height:9px;border-radius:50%;background:var(--mostaza);flex-shrink:0;}
.tl-seg{flex:1;height:2px;background:rgba(250,247,240,.15);}
.foot-card p{font-size:12.5px;color:var(--salvia);line-height:1.6;}
.cta-card{display:flex;flex-direction:column;justify-content:space-between;}
.btn-cta{margin-top:14px;background:var(--mostaza);color:var(--verde-deep);border:none;padding:11px;border-radius:10px;font-size:13px;font-weight:700;cursor:pointer;text-align:center;}

.credit-line{text-align:center;font-size:11.5px;color:var(--tx-muted);padding:0 40px 30px;}