:root{
  --green:#167b49;--green-dark:#075235;--green-deep:#063e2a;--green-soft:#eaf6ef;
  --lime:#91c11e;--yellow:#f5c400;--ink:#102d25;--muted:#687970;--line:#dce8e1;
  --paper:#fbfdfc;--white:#fff;--shadow:0 18px 55px rgba(8,70,45,.10);
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--paper)}a{text-decoration:none;color:inherit}button,input{font:inherit}.hidden{display:none!important}.container{width:min(1180px,calc(100% - 44px));margin:0 auto}

/* Global fixed navigation */
.site-header{position:fixed;inset:0 0 auto 0;height:82px;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(7,82,53,.09);z-index:1000;display:flex;align-items:center;justify-content:space-between;padding:0 max(28px,calc((100vw - 1180px)/2));box-shadow:0 8px 28px rgba(8,70,45,.04)}
.nav-logo{display:flex;align-items:center;height:64px}.nav-logo img{height:58px;width:auto;display:block;object-fit:contain}.site-nav{display:flex;align-items:center;gap:8px}.site-nav a{padding:11px 14px;border-radius:999px;font-size:.91rem;font-weight:700;color:#38524a;transition:.2s}.site-nav a:hover,.site-nav a.active{background:var(--green-soft);color:var(--green)}.site-nav a[data-portal-link]{background:var(--green);color:#fff;padding-inline:18px}.site-nav a[data-portal-link]:hover{background:var(--green-dark)}.mobile-nav-toggle{display:none;border:0;background:var(--green-soft);color:var(--green-dark);width:44px;height:44px;border-radius:12px;font-size:1.3rem}

/* Landing */
.landing-section{padding:104px 0}.hero-home{min-height:100vh;padding-top:146px;display:flex;align-items:center;overflow:hidden;background:radial-gradient(circle at 82% 18%,rgba(145,193,30,.16),transparent 25%),linear-gradient(145deg,#f8fcfa 0%,#eff8f2 55%,#fff 100%);position:relative}.hero-home:after{content:"";position:absolute;width:520px;height:520px;border:90px solid rgba(22,123,73,.045);border-radius:50%;right:-160px;bottom:-230px}.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:72px;align-items:center;position:relative;z-index:1}.eyebrow-chip,.section-kicker{display:inline-block;font-size:.76rem;font-weight:800;letter-spacing:.13em;color:var(--green);text-transform:uppercase}.eyebrow-chip{background:var(--green-soft);border:1px solid #d5eadc;padding:9px 13px;border-radius:999px}.hero-copy h1{font-size:clamp(3rem,6vw,5.8rem);line-height:.98;letter-spacing:-.06em;margin:22px 0 24px;max-width:780px}.objective{font-size:1.22rem;line-height:1.7;color:#526d63;max-width:680px;margin:0}.hero-actions{display:flex;gap:12px;margin-top:34px}.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:12px;padding:13px 18px;font-weight:800;cursor:pointer;transition:.2s}.btn-primary{background:var(--green);color:#fff;box-shadow:0 9px 24px rgba(22,123,73,.18)}.btn-primary:hover{background:var(--green-dark);transform:translateY(-1px)}.btn-outline{background:#fff;border:1px solid var(--line);color:var(--green-dark)}.btn-soft{background:var(--green-soft);color:var(--green)}.full{width:100%}.hero-points{display:flex;flex-wrap:wrap;gap:18px;margin-top:28px;color:#557068;font-size:.84rem;font-weight:700}.hero-points span{display:flex;align-items:center;gap:6px}.hero-logo-card{background:#fff;border:1px solid rgba(22,123,73,.10);border-radius:34px;padding:36px;box-shadow:var(--shadow);position:relative;overflow:hidden;min-height:500px;display:flex;flex-direction:column;justify-content:center}.hero-logo-card img{width:100%;max-height:370px;object-fit:contain;position:relative;z-index:1}.logo-glow{position:absolute;width:300px;height:300px;background:radial-gradient(circle,rgba(145,193,30,.22),transparent 70%);right:-50px;top:-40px}.brand-message{text-align:center;border-top:1px solid var(--line);padding-top:22px;margin-top:10px;position:relative;z-index:1}.brand-message strong,.brand-message span{display:block}.brand-message strong{font-size:1.05rem;color:var(--green-dark)}.brand-message span{font-size:.83rem;color:var(--muted);margin-top:5px}

.learn-section{background:#fff}.section-heading{max-width:760px;margin-bottom:42px}.section-heading.centered{text-align:center;margin:0 auto 42px}.section-heading h2{font-size:clamp(2.3rem,4vw,4rem);letter-spacing:-.045em;margin:10px 0 14px}.section-heading p{color:var(--muted);line-height:1.7;margin:0;font-size:1.02rem}.level-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.level-card{border:1px solid var(--line);border-radius:26px;padding:30px;position:relative;overflow:hidden;box-shadow:0 10px 32px rgba(13,83,55,.05)}.level-card.basic{background:linear-gradient(145deg,#f7fcf9,#fff)}.level-card.intermediate{background:linear-gradient(145deg,#f1f8e9,#fff);border-color:#dbe9c5}.level-card:before{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:-70px;top:-70px;background:rgba(22,123,73,.04)}.level-head{display:flex;align-items:center;gap:16px;padding-bottom:24px;border-bottom:1px solid var(--line)}.level-number{width:52px;height:52px;border-radius:15px;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:900}.intermediate .level-number{background:var(--lime);color:var(--green-deep)}.level-head small{font-size:.68rem;letter-spacing:.11em;font-weight:800;color:var(--muted)}.level-head h3{font-size:1.7rem;margin:4px 0 0}.topic-list{list-style:none;margin:24px 0 0;padding:0;display:grid;gap:12px}.topic-list li{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.78);border:1px solid #e6eee9;border-radius:14px;padding:14px 16px;font-weight:700}.topic-list li span{width:29px;height:29px;border-radius:9px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;font-size:.68rem;font-weight:900}

.portal-section{background:linear-gradient(145deg,var(--green-deep),var(--green));color:#fff;position:relative;overflow:hidden}.portal-section:before{content:"";position:absolute;width:620px;height:620px;border:100px solid rgba(255,255,255,.04);border-radius:50%;left:-240px;top:-230px}.portal-shell{display:grid;grid-template-columns:1fr .82fr;gap:70px;align-items:center;position:relative;z-index:1}.section-kicker.light{color:#c8ef8b}.portal-copy h2{font-size:clamp(2.5rem,4vw,4.4rem);letter-spacing:-.05em;margin:12px 0 18px}.portal-copy>p{font-size:1.06rem;line-height:1.7;color:rgba(255,255,255,.76);max-width:620px}.portal-feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:34px}.portal-feature{display:flex;align-items:center;gap:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.08);padding:15px;border-radius:15px}.portal-feature>span{font-size:1.35rem}.portal-feature strong,.portal-feature small{display:block}.portal-feature small{color:rgba(255,255,255,.66);margin-top:3px}.login-card{background:#fff;color:var(--ink);padding:34px;border-radius:28px;box-shadow:0 24px 60px rgba(0,0,0,.18)}.mini-logo{width:58px;height:58px;border-radius:16px;background:var(--green);color:#fff;display:grid;place-items:center;font-size:1.25rem;font-weight:900}.login-card h3{font-size:2rem;margin:22px 0 4px}.muted{color:var(--muted);margin:0 0 24px}.login-card label{display:block;font-size:.83rem;font-weight:800;margin:14px 0 7px}.login-card input[type=email],.login-card input[type=password]{width:100%;border:1px solid var(--line);background:#fbfdfc;border-radius:11px;padding:13px 14px;outline:none}.login-card input:focus{border-color:#8bc1a2;box-shadow:0 0 0 3px rgba(22,123,73,.08)}.password-wrap{position:relative}.password-wrap input{padding-right:48px!important}.icon-btn{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:transparent;cursor:pointer}.form-row{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:16px 0}.form-row label{margin:0;font-weight:600}.link{font-size:.82rem;font-weight:700;color:var(--green)}.demo-note{margin-top:20px;border:1px dashed #bfd7c9;background:#f8fbf9;border-radius:13px;padding:15px;font-size:.78rem}.demo-note strong,.demo-note span{display:block}.demo-note span{color:var(--muted);margin-top:4px}

.contact-section{background:#f8fbf9}.social-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.social-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px;display:flex;align-items:center;gap:15px;box-shadow:0 8px 24px rgba(13,83,55,.045);transition:.2s}.social-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.social-icon{width:54px;height:54px;border-radius:16px;display:grid;place-items:center;background:var(--green-soft)}.social-icon svg{width:28px;height:28px;fill:var(--green)}.social-card strong,.social-card span{display:block}.social-card>div:nth-child(2){flex:1}.social-card>div:nth-child(2) span{font-size:.8rem;color:var(--muted);margin-top:4px}.social-arrow{font-size:1.25rem;color:#91a69c}.instagram .social-icon{background:#f8eef6}.instagram .social-icon svg{fill:#a33b81}.facebook .social-icon{background:#edf3ff}.facebook .social-icon svg{fill:#3565a9}.site-footer{background:#092d22;color:#dbe9e2;padding:30px 0}.footer-inner{display:flex;align-items:center;gap:20px}.footer-inner img{height:50px;width:auto;background:#fff;border-radius:8px;padding:2px}.footer-inner span{font-weight:700}.footer-inner small{margin-left:auto;color:#9fb3aa}

/* Dashboard */
.dashboard-view{padding-top:82px;min-height:100vh;background:#f4f8f5}.sidebar{position:fixed;left:0;top:82px;bottom:0;width:250px;background:var(--green-deep);color:#fff;padding:22px 16px;display:flex;flex-direction:column;z-index:600}.sidebar-brand{display:flex;align-items:center;gap:11px;padding:5px 7px 22px}.brand-mark{width:42px;height:42px;border-radius:12px;background:var(--lime);color:var(--green-deep);display:grid;place-items:center;font-weight:900}.sidebar-brand strong,.sidebar-brand small{display:block}.sidebar-brand small{color:rgba(255,255,255,.55);font-size:.72rem;margin-top:2px}.sidebar nav{display:grid;gap:5px}.dash-nav-item{border:0;background:transparent;color:rgba(255,255,255,.72);padding:11px 12px;border-radius:10px;text-align:left;display:flex;gap:10px;align-items:center;cursor:pointer;font-weight:700}.dash-nav-item:hover,.dash-nav-item.active{background:rgba(255,255,255,.1);color:#fff}.sidebar-footer{margin-top:auto}.danger{color:#f0b7b7}.dashboard-main{margin-left:250px;min-height:calc(100vh - 82px)}.topbar{height:88px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 30px;position:sticky;top:82px;z-index:500}.menu-btn{display:none}.topbar-title{flex:1}.eyebrow{font-size:.68rem;letter-spacing:.11em;color:var(--green);font-weight:900}.topbar-title h2{margin:3px 0 0}.user-box{display:flex;align-items:center;gap:10px}.avatar{width:40px;height:40px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:800}.user-meta strong,.user-meta small{display:block}.user-meta small{font-size:.73rem;color:var(--muted)}.dashboard-content{padding:28px}.content-section{display:none}.content-section.active{display:block}.dash-hero{background:linear-gradient(135deg,var(--green-dark),var(--green));border-radius:24px;color:#fff;padding:30px;display:flex;justify-content:space-between;align-items:center;overflow:hidden;position:relative}.dash-hero h1{font-size:clamp(2rem,3vw,3rem);margin:10px 0}.dash-hero p{color:rgba(255,255,255,.78)}.chip{display:inline-block;background:rgba(255,255,255,.13);padding:7px 11px;border-radius:999px;font-size:.75rem;font-weight:800}.hero-badge{width:150px;height:150px;border-radius:50%;background:var(--lime);color:var(--green-deep);display:flex;flex-direction:column;align-items:center;justify-content:center}.hero-badge strong{font-size:2.4rem}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}.stat-card,.panel,.lesson-card,.resource-card,.table-card,.grade-summary{background:#fff;border:1px solid var(--line);border-radius:18px}.stat-card{padding:17px;display:flex;align-items:center;gap:12px}.stat-icon{width:44px;height:44px;border-radius:12px;background:var(--green-soft);display:grid;place-items:center}.stat-card small,.stat-card strong{display:block}.stat-card small{font-size:.74rem;color:var(--muted)}.stat-card strong{margin-top:2px}.grid-two{display:grid;grid-template-columns:1.4fr .8fr;gap:18px}.stack{display:grid;gap:18px}.panel{padding:22px}.panel-head{display:flex;justify-content:space-between;gap:12px}.panel h3{margin:4px 0 0}.pill{font-size:.7rem;font-weight:800;background:#edf1ef;padding:6px 9px;border-radius:999px}.pill.green{background:var(--green-soft);color:var(--green)}.course-row{display:flex;gap:14px;margin-top:18px}.course-icon{width:48px;height:48px;border-radius:13px;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:900}.grow{flex:1}.grow small{display:block;color:var(--muted);margin-top:3px}.progress{height:8px;background:#e8efeb;border-radius:999px;margin-top:12px;overflow:hidden}.progress span{display:block;height:100%;background:var(--green)}.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:.7rem;margin-top:5px}.module-list{display:grid;gap:8px;margin-top:18px}.module{display:flex;align-items:center;gap:10px;border:1px solid var(--line);padding:10px;border-radius:11px}.module>span{width:30px;height:30px;border-radius:9px;background:#edf1ef;display:grid;place-items:center;font-size:.75rem;font-weight:800}.module.done>span{background:var(--green-soft);color:var(--green)}.module.current{background:#f7fbf8;border-color:#bcd8c7}.module.current>span{background:var(--green);color:#fff}.module strong,.module small{display:block}.module small{color:var(--muted);font-size:.72rem}.date-row{display:flex;align-items:center;gap:12px;margin:16px 0}.date-box{width:58px;height:58px;background:var(--lime);border-radius:13px;display:flex;flex-direction:column;align-items:center;justify-content:center}.date-row strong,.date-row small{display:block}.date-row small{color:var(--muted);font-size:.75rem}.whatsapp-panel{background:linear-gradient(145deg,#edf9f2,#fff)}.whatsapp-panel p{color:var(--muted);font-size:.88rem;line-height:1.55}.section-intro{margin-bottom:20px}.section-intro h1{font-size:2rem;margin:4px 0 5px}.section-intro p{margin:0;color:var(--muted)}.cards-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.lesson-card,.resource-card{padding:20px}.lesson-card h3,.resource-card h3{margin:14px 0 5px}.lesson-card p,.resource-card p{color:var(--muted)}.lesson-tag{display:inline-block;font-size:.7rem;font-weight:800;background:var(--green-soft);color:var(--green);padding:6px 8px;border-radius:999px}.lesson-tag.done{background:#eef8ef;color:#2c7d43}.active-card{border-color:#acd0ba}.table-card{overflow:auto}.table-card table{width:100%;border-collapse:collapse;min-width:620px}.table-card th,.table-card td{text-align:left;padding:15px 17px;border-bottom:1px solid var(--line);font-size:.86rem}.table-card th{font-size:.7rem;color:var(--muted);background:#fbfdfc}.status{font-size:.7rem;padding:6px 8px;border-radius:999px;background:#f0f2f1}.status.ok{background:#eaf7ef;color:#2d7f46}.status.pending{background:#fff3d6;color:#926600}.grade-layout{display:grid;grid-template-columns:250px 1fr;gap:16px}.grade-summary{padding:22px}.grade-summary>strong{display:block;font-size:3.6rem;color:var(--green);margin:8px 0}.grade-summary p{color:var(--muted)}.resource-icon{width:52px;height:52px;border-radius:14px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;font-size:.72rem;font-weight:900}.video-thumb{height:150px;border-radius:15px;background:linear-gradient(135deg,#dcefe5,#f5faf7);display:grid;place-items:center}.video-thumb span{width:50px;height:50px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center}

/* Soft reveal */
.reveal{opacity:1;transform:none}

@media(max-width:1000px){.hero-grid,.portal-shell{grid-template-columns:1fr}.hero-logo-card{min-height:auto}.level-grid{grid-template-columns:1fr}.social-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.grid-two{grid-template-columns:1fr}.cards-3{grid-template-columns:repeat(2,1fr)}.sidebar{transform:translateX(-100%);transition:.25s}.sidebar.open{transform:translateX(0)}.dashboard-main{margin-left:0}.menu-btn{display:block;border:0;background:var(--green-soft);color:var(--green);width:40px;height:40px;border-radius:10px;margin-right:12px}}
@media(max-width:760px){html{scroll-padding-top:74px}.site-header{height:70px;padding:0 18px}.nav-logo img{height:48px}.mobile-nav-toggle{display:block}.site-nav{position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:10px;display:none;flex-direction:column;align-items:stretch}.site-nav.open{display:flex}.site-nav a{text-align:center}.hero-home{padding-top:112px}.landing-section{padding:78px 0}.hero-copy h1{font-size:3.2rem}.hero-actions{flex-direction:column;align-items:stretch}.portal-feature-grid{grid-template-columns:1fr}.footer-inner{flex-wrap:wrap}.footer-inner small{margin-left:0;width:100%}.dashboard-view{padding-top:70px}.sidebar{top:70px}.topbar{top:70px;padding:0 18px}.user-meta{display:none}.dashboard-content{padding:18px}.stats-grid{grid-template-columns:1fr 1fr}.cards-3{grid-template-columns:1fr}.grade-layout{grid-template-columns:1fr}.dash-hero{align-items:flex-start}.hero-badge{display:none}}
@media(max-width:480px){.container{width:min(100% - 28px,1180px)}.hero-copy h1{font-size:2.65rem}.level-card,.login-card{padding:22px}.stats-grid{grid-template-columns:1fr}.form-row{align-items:flex-start;flex-direction:column}.hero-points{display:grid;gap:10px}}


/* Ajuste de navegación por secciones: cada bloque inicia justo debajo del menú fijo */
#inicio, #aprendizaje, #portal, #contacto { scroll-margin-top: 82px; }
#inicio.hero-home {
  min-height: calc(100vh - 82px);
  padding-top: 42px;
  padding-bottom: 42px;
  margin-top: 82px;
}
#aprendizaje.learn-section,
#portal.portal-section,
#contacto.contact-section {
  min-height: calc(100vh - 82px);
  padding-top: 42px;
  padding-bottom: 42px;
  display: flex;
  align-items: center;
}
#aprendizaje > .container,
#portal > .container,
#contacto > .container { width: min(1180px, calc(100% - 44px)); }
#aprendizaje .section-heading { margin-bottom: 26px; }
#contacto .section-heading.centered { margin-bottom: 28px; }

@media (max-height: 780px) and (min-width: 761px) {
  #inicio.hero-home,
  #aprendizaje.learn-section,
  #portal.portal-section,
  #contacto.contact-section { padding-top: 28px; padding-bottom: 28px; }
  .hero-logo-card { min-height: 390px; padding: 24px; }
  .hero-logo-card img { max-height: 285px; }
  .hero-copy h1 { font-size: clamp(2.7rem, 5vw, 4.6rem); margin: 16px 0 18px; }
  .objective { font-size: 1.05rem; line-height: 1.55; }
  .hero-points { margin-top: 20px; }
  .section-heading h2 { font-size: clamp(2.1rem, 3.4vw, 3.3rem); }
  .level-card { padding: 22px; }
  .topic-list { margin-top: 16px; gap: 8px; }
  .topic-list li { padding: 10px 13px; }
  .portal-copy h2 { font-size: clamp(2.3rem, 3.5vw, 3.5rem); }
  .portal-feature-grid { margin-top: 22px; }
  .login-card { padding: 25px; }
  .login-card h3 { margin-top: 15px; }
}

@media(max-width:760px){
  #inicio, #aprendizaje, #portal, #contacto { scroll-margin-top:70px; }
  #inicio.hero-home { margin-top:70px; min-height:calc(100vh - 70px); padding-top:38px; padding-bottom:38px; }
  #aprendizaje.learn-section,#portal.portal-section,#contacto.contact-section { min-height:auto; padding-top:62px; padding-bottom:62px; display:block; }
  #aprendizaje > .container,#portal > .container,#contacto > .container { width:min(100% - 28px,1180px); }
}


/* Ajuste fino solicitado: elevar ligeramente Aprendizaje y Portal alumno */
@media (min-width: 761px) {
  #aprendizaje.learn-section,
  #portal.portal-section {
    padding-top: 22px;
    padding-bottom: 62px;
    align-items: center;
  }
  #aprendizaje > .container,
  #portal > .container {
    transform: translateY(-18px);
  }
}


/* Ajuste v3: mejor aprovechamiento vertical tras retirar contenido redundante */
@media (min-width: 761px) {
  #aprendizaje > .container {
    transform: translateY(-28px);
  }
  #portal > .container {
    transform: translateY(-30px);
  }
}


/* =========================================================
   AJUSTE V4 — ENCUADRE EXACTO AL HACER CLIC EN EL MENÚ
   ========================================================= */
@media (min-width: 761px) {
  /* Cada sección ocupa exactamente la ventana visible bajo el menú fijo */
  #aprendizaje.learn-section,
  #portal.portal-section {
    min-height: calc(100vh - 82px);
    height: calc(100vh - 82px);
    padding: 0;
    display: flex;
    align-items: flex-start;
    overflow: hidden;
    scroll-margin-top: 82px;
  }

  /* Lo que vas a aprender: título arriba y tarjetas completas en una sola vista */
  #aprendizaje > .container {
    width: min(1180px, calc(100% - 44px));
    margin: 0 auto;
    transform: none;
    padding-top: 10px;
  }
  #aprendizaje .section-heading {
    margin: 0 0 24px;
    max-width: 900px;
  }
  #aprendizaje .section-heading h2 {
    margin: 0 0 12px;
    font-size: clamp(2.9rem, 4vw, 4.25rem);
    line-height: 1.02;
  }
  #aprendizaje .section-heading p {
    font-size: 1rem;
    line-height: 1.55;
    max-width: 760px;
  }
  #aprendizaje .level-grid {
    gap: 20px;
  }
  #aprendizaje .level-card {
    padding: 26px;
    min-height: 0;
  }
  #aprendizaje .level-head {
    padding-bottom: 18px;
  }
  #aprendizaje .level-head h3 {
    font-size: 1.65rem;
  }
  #aprendizaje .topic-list {
    margin-top: 18px;
    gap: 9px;
  }
  #aprendizaje .topic-list li {
    padding: 11px 14px;
  }

  /* Portal alumno: contenido sube y queda completamente dentro de la vista */
  #portal > .container {
    width: min(1180px, calc(100% - 44px));
    margin: 0 auto;
    transform: none;
    padding-top: 20px;
  }
  #portal .portal-shell {
    gap: 62px;
    align-items: center;
  }
  #portal .portal-copy h2 {
    margin: 10px 0 16px;
    font-size: clamp(3rem, 4.5vw, 4.6rem);
  }
  #portal .portal-copy > p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 0;
  }
  #portal .portal-feature-grid {
    margin-top: 24px;
    gap: 12px;
  }
  #portal .portal-feature {
    padding: 13px 15px;
  }
  #portal .login-card {
    padding: 30px;
    border-radius: 28px;
  }
  #portal .login-card h3 {
    margin: 18px 0 4px;
  }
  #portal .muted {
    margin-bottom: 20px;
  }
  #portal .login-card label {
    margin: 12px 0 6px;
  }
  #portal .form-row {
    margin: 14px 0;
  }
}

/* Ajuste adicional para pantallas de escritorio con poca altura */
@media (min-width: 761px) and (max-height: 820px) {
  #aprendizaje > .container { padding-top: 4px; }
  #aprendizaje .section-heading { margin-bottom: 16px; }
  #aprendizaje .section-heading h2 { font-size: 3.25rem; }
  #aprendizaje .section-heading p { font-size: .93rem; line-height: 1.45; }
  #aprendizaje .level-card { padding: 20px; }
  #aprendizaje .level-head { padding-bottom: 14px; }
  #aprendizaje .topic-list { margin-top: 14px; gap: 7px; }
  #aprendizaje .topic-list li { padding: 9px 12px; }

  #portal > .container { padding-top: 10px; }
  #portal .portal-copy h2 { font-size: 3.45rem; }
  #portal .portal-feature-grid { margin-top: 18px; }
  #portal .portal-feature { padding: 11px 13px; }
  #portal .login-card { padding: 24px 28px; }
  #portal .mini-logo { width: 52px; height: 52px; }
  #portal .login-card h3 { margin-top: 14px; font-size: 1.9rem; }
  #portal .login-card input[type=email],
  #portal .login-card input[type=password] { padding: 11px 13px; }
}


/* =========================================================
   PORTAL ALUMNO — AJUSTES DE CURSO Y BIBLIOTECA
   ========================================================= */

.schedule-list .module {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}
.schedule-list .module-main {
  min-width: 0;
}
.schedule-list .module-date {
  min-width: 92px;
  text-align: right;
}
.schedule-list .module-date b,
.schedule-list .module-date em {
  display: block;
}
.schedule-list .module-date b {
  color: var(--green-dark);
  font-size: .79rem;
  letter-spacing: .05em;
}
.schedule-list .module-date em {
  margin-top: 3px;
  color: var(--muted);
  font-size: .68rem;
  font-style: normal;
}
.schedule-list .module.current .module-date em {
  color: var(--green);
  font-weight: 800;
}

.course-weeks-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
}
.week-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 8px 26px rgba(13,83,55,.05);
  display: flex;
  flex-direction: column;
  min-height: 220px;
}
.week-card:last-child {
  grid-column: auto;
}
.week-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.week-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: .69rem;
  font-weight: 900;
}
.week-badge.virtual {
  background: var(--green-soft);
  color: var(--green);
}
.week-badge.async {
  background: #f4f8e8;
  color: #6b8f12;
}
.week-date {
  color: var(--muted);
  font-size: .75rem;
  font-weight: 800;
}
.week-card h3 {
  margin: 18px 0 8px;
  font-size: 1.18rem;
}
.week-card ul {
  margin: 0 0 18px;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
  flex: 1;
}
.week-card .btn {
  align-self: flex-start;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 14px;
}
.library-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  display: grid;
  grid-template-columns: 46px minmax(0,1fr) auto;
  gap: 14px;
  align-items: center;
  box-shadow: 0 7px 22px rgba(13,83,55,.04);
}
.library-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: var(--green-soft);
  color: var(--green);
  display: grid;
  place-items: center;
  font-size: .72rem;
  font-weight: 900;
}
.library-card h3 {
  margin: 4px 0 5px;
  font-size: .98rem;
}
.library-card p {
  margin: 0;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.45;
}
.resource-type {
  display: inline-block;
  font-size: .63rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--green);
}
.resource-type.practice {
  color: #86700a;
}
.library-card .btn {
  white-space: nowrap;
  padding: 10px 13px;
}

@media(max-width:900px) {
  .course-weeks-grid,
  .library-grid {
    grid-template-columns: 1fr;
  }
  .week-card:last-child {
    grid-column: auto;
  }
}
@media(max-width:620px) {
  .schedule-list .module {
    grid-template-columns: 34px 1fr;
  }
  .schedule-list .module-date {
    grid-column: 2;
    text-align: left;
    display: flex;
    gap: 8px;
    min-width: 0;
  }
  .library-card {
    grid-template-columns: 42px 1fr;
  }
  .library-card .btn {
    grid-column: 2;
    justify-self: start;
  }
}


/* Portal Alumno v2 — botón UNIRSE con símbolo visual de Zoom */
.zoom-join-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-width: 126px;
}
.zoom-icon {
  width: 25px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
}
.zoom-camera {
  width: 16px;
  height: 13px;
  border-radius: 4px;
  background: currentColor;
  display: block;
  position: relative;
}
.zoom-camera::after {
  content: "";
  position: absolute;
  right: -8px;
  top: 3px;
  width: 0;
  height: 0;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 7px solid currentColor;
}

/* Todas las semanas conservan exactamente el mismo ancho de tarjeta */
.course-weeks-grid .week-card {
  grid-column: auto;
}


/* Corrección v3: botón UNIRSE en Próxima clase con icono de Zoom */
.zoom-join-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 132px;
  padding: 13px 18px;
}

.zoom-logo {
  position: relative;
  width: 27px;
  height: 20px;
  display: inline-block;
  flex: 0 0 auto;
}

.zoom-camera-body {
  position: absolute;
  left: 0;
  top: 3px;
  width: 17px;
  height: 14px;
  border-radius: 4px;
  background: currentColor;
}

.zoom-camera-lens {
  position: absolute;
  right: 0;
  top: 5px;
  width: 9px;
  height: 10px;
  background: currentColor;
  clip-path: polygon(0 20%, 100% 0, 100% 100%, 0 80%);
  border-radius: 2px;
}


/* v6 — Mis Cursos */
.courses-info-line{display:block;margin:8px 0 6px}
.course-accordion{display:grid;gap:14px;margin-top:20px}
.course-accordion-item{background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:0 8px 24px rgba(20,72,47,.045)}
.course-accordion-header{width:100%;border:0;background:var(--excel);color:#fff;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;font-weight:800;font-size:1rem}
.course-accordion-header:hover{filter:brightness(1.04)}
.course-chevron{font-size:1.45rem;line-height:1;transition:transform .22s ease}
.course-accordion-item.open .course-chevron{transform:rotate(180deg)}
.course-accordion-content{display:none;border-top:1px solid var(--border);padding:20px;background:#fbfdfc}
.course-accordion-item.open .course-accordion-content{display:block}
.reserve-content{padding:24px}
.course-accordion-content .course-weeks-grid{margin-top:0}
@media(max-width:760px){.course-accordion-header{padding:17px}}


/* v8 — Acordeones de Mis Cursos según referencia */
.course-accordion{
  display:grid;
  gap:16px;
  margin-top:24px;
}
.course-accordion-item{
  background:#fff;
  border:0;
  border-radius:22px;
  overflow:hidden;
  box-shadow:0 10px 26px rgba(20,72,47,.055);
}
.course-accordion-header{
  width:100%;
  min-height:74px;
  border:0;
  background:#fff !important;
  color:#111 !important;
  padding:8px 18px 8px 9.5%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  font-weight:500;
  font-size:1.12rem;
  filter:none !important;
}
.course-accordion-header:hover{
  background:#fff !important;
  filter:none !important;
}
.course-accordion-header > span:first-child{
  flex:1;
}
.course-chevron{
  flex:0 0 58px;
  width:58px;
  height:58px;
  background:#f7f7f7;
  position:relative;
  transition:transform .2s ease;
}
.course-chevron::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:0;
  height:0;
  border-left:12px solid transparent;
  border-right:12px solid transparent;
  border-top:13px solid #050505;
  transform:translate(-50%,-35%);
}
.course-accordion-item.open .course-chevron{
  transform:rotate(180deg);
}
.course-accordion-content{
  display:none;
  border-top:1px solid var(--border);
  padding:20px;
  background:#fbfdfc;
}
.course-accordion-item.open .course-accordion-content{
  display:block;
}
@media(max-width:760px){
  .course-accordion-header{
    min-height:66px;
    padding-left:18px;
    font-size:.95rem;
  }
  .course-chevron{
    flex-basis:48px;
    width:48px;
    height:48px;
  }
  .course-chevron::after{
    border-left-width:9px;
    border-right-width:9px;
    border-top-width:10px;
  }
}


/* v9 — Iconos de Excel aprobados en Mis Cursos */
.course-accordion-header{
  padding-left:34px !important;
}
.course-title-wrap{
  display:flex;
  align-items:center;
  gap:22px;
  flex:1;
  min-width:0;
}
.course-title-text{
  display:block;
  flex:1;
}
.course-excel-icon{
  width:46px;
  height:46px;
  object-fit:contain;
  flex:0 0 46px;
}
.course-accordion-header > .course-title-wrap:first-child{
  flex:1;
}
@media(max-width:760px){
  .course-accordion-header{padding-left:18px !important}
  .course-title-wrap{gap:13px}
  .course-excel-icon{
    width:36px;
    height:36px;
    flex-basis:36px;
  }
}
\n\n/* v10 - visor protegido de Biblioteca */\n.protected-guide{grid-column:1/-1;background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px;box-shadow:0 10px 28px rgba(20,72,47,.06);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}\n.protected-guide[hidden]{display:none!important}\n.protected-guide-head{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:18px}\n.protected-guide-head h3{margin:5px 0 6px}.protected-guide-head p{margin:0;color:var(--muted)}\n.protected-badge{white-space:nowrap;background:var(--excel-light);color:var(--excel);font-weight:800;font-size:.75rem;padding:8px 11px;border-radius:999px}\n.protected-pages{max-width:980px;margin:0 auto;display:grid;gap:18px;user-select:none;-webkit-user-select:none}\n.protected-pages img{display:block;width:100%;height:auto;border:1px solid var(--border);border-radius:12px;box-shadow:0 5px 16px rgba(0,0,0,.05);pointer-events:none;user-select:none;-webkit-user-drag:none}\n@media(max-width:760px){.protected-guide{padding:14px}.protected-guide-head{flex-direction:column}.protected-badge{white-space:normal}}\n
/* v11 — visor protegido paginado */
.protected-guide-viewer{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;max-width:980px;margin:0 auto;outline:none}
.guide-viewer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:18px}
.guide-viewer-head h3{margin:5px 0}.guide-viewer-head p{margin:0;color:var(--muted)}
.guide-head-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.guide-close-btn{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:11px;padding:10px 13px;font-weight:700}
.guide-page-stage{background:#edf2ef;border:1px solid var(--border);border-radius:18px;padding:18px;display:flex;justify-content:center;min-height:420px;overflow:hidden}
.guide-current-page{display:block;width:auto;max-width:100%;max-height:74vh;object-fit:contain;box-shadow:0 10px 30px rgba(20,72,47,.12);pointer-events:none}
.guide-controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:14px;margin-top:18px}
.guide-prev{justify-self:start}.guide-next{justify-self:end}.guide-page-counter{font-size:.88rem;color:var(--muted)}
.guide-prev:disabled,.guide-next:disabled{opacity:.42;cursor:not-allowed;transform:none}
@media(max-width:680px){.guide-viewer-head{flex-direction:column}.guide-head-actions{width:100%;justify-content:space-between}.guide-page-stage{padding:8px;min-height:260px}.guide-current-page{max-height:68vh}.guide-controls{grid-template-columns:1fr 1fr}.guide-page-counter{grid-column:1/-1;grid-row:1;text-align:center}.guide-prev{grid-column:1;grid-row:2}.guide-next{grid-column:2;grid-row:2}}


/* v12 — Guía protegida: navegación por acordeón + página anterior/siguiente */
.guide-topic-accordion{display:grid;gap:13px;margin-top:18px}
.guide-accordion-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 8px 22px rgba(20,72,47,.045);
}
.guide-accordion-header{
  width:100%;
  min-height:66px;
  border:0;
  background:#fff;
  color:var(--text);
  padding:14px 18px 14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  font-weight:800;
  font-size:1rem;
}
.guide-accordion-header:hover{background:var(--mint)}
.guide-accordion-item.open .guide-accordion-header{
  background:var(--excel);
  color:#fff;
}
.guide-accordion-chevron{
  flex:0 0 48px;
  width:48px;
  height:48px;
  border-radius:10px;
  background:#f5f7f6;
  position:relative;
}
.guide-accordion-item.open .guide-accordion-chevron{background:rgba(255,255,255,.15)}
.guide-accordion-chevron::after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  width:0;height:0;
  border-left:9px solid transparent;
  border-right:9px solid transparent;
  border-top:10px solid #111;
  transform:translate(-50%,-35%);
  transition:transform .2s ease;
}
.guide-accordion-item.open .guide-accordion-chevron::after{
  border-top-color:#fff;
  transform:translate(-50%,-65%) rotate(180deg);
}
.guide-accordion-content{display:none;background:#f7faf8;padding:18px;border-top:1px solid var(--border)}
.guide-accordion-item.open .guide-accordion-content{display:block}

/* La página ocupa más ancho que en v11 para mejorar la lectura. */
.guide-accordion-content .guide-page-stage{
  width:100%;
  min-height:0;
  padding:12px;
  background:#e9efeb;
  border-radius:15px;
  overflow:auto;
}
.guide-page-image{
  display:block;
  width:min(100%, 1040px);
  height:auto;
  max-height:none;
  margin:0 auto;
  object-fit:contain;
  box-shadow:0 10px 28px rgba(20,72,47,.12);
  pointer-events:none;
  user-select:none;
  -webkit-user-select:none;
}
.guide-controls{
  position:sticky;
  bottom:10px;
  z-index:3;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(8px);
  border:1px solid var(--border);
  border-radius:15px;
  padding:10px 12px;
  box-shadow:0 8px 24px rgba(20,72,47,.08);
}
@media(max-width:680px){
  .guide-accordion-header{padding:10px 12px 10px 16px;font-size:.92rem}
  .guide-accordion-chevron{width:42px;height:42px;flex-basis:42px}
  .guide-accordion-content{padding:8px}
  .guide-accordion-content .guide-page-stage{padding:4px}
}

/* Biblioteca rediseñada Proyecta+ */
.library-redesign-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:20px}.library-redesign-head h1{margin:3px 0 4px;font-size:2rem}.library-redesign-head p{margin:0;color:var(--muted)}
.library-search{width:min(360px,100%);height:48px;border:1px solid var(--border);background:#fff;border-radius:12px;display:flex;align-items:center;gap:10px;padding:0 14px}.library-search span{font-size:1.3rem;color:var(--excel)}.library-search input{width:100%;border:0;outline:0;background:transparent;color:var(--text);font:inherit}
.library-workspace{display:grid;grid-template-columns:minmax(250px,290px) minmax(0,1fr);border:1px solid var(--border);border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 10px 28px rgba(20,72,47,.05)}
.library-topic-panel{background:#f8fbf9;border-right:1px solid var(--border);padding:18px;display:flex;flex-direction:column;min-height:690px}.library-topic-panel h2{font-size:1.05rem;margin:0 0 16px}.library-topic-list{display:grid;gap:9px}
.library-topic{width:100%;border:1px solid #e6eee9;background:#fff;border-radius:13px;padding:12px;display:grid;grid-template-columns:38px 1fr 18px;align-items:center;gap:10px;text-align:left;color:var(--text);cursor:pointer}.library-topic:hover{background:#f0f8f3}.library-topic.active{background:linear-gradient(135deg,#e2f3e8,#f1f9f4);border-color:#bcdcc8}
.library-topic-number{width:34px;height:34px;border-radius:50%;background:var(--excel);color:#fff;display:grid;place-items:center;font-weight:800}.library-topic-copy{display:grid;gap:3px;min-width:0}.library-topic-copy strong{font-size:.91rem}.library-topic-copy small{font-size:.73rem;color:var(--muted);line-height:1.25}.library-topic-arrow{font-size:1.55rem;color:var(--excel);justify-self:end}
.library-tip{margin-top:auto;background:#eaf6ee;border-radius:14px;padding:16px}.library-tip strong{color:var(--excel)}.library-tip p{font-size:.8rem;line-height:1.45;margin:7px 0 0}
.library-reader{padding:22px;min-width:0;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;outline:none}.library-reader-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:16px}.library-reader-head h2{font-size:1.55rem;margin:5px 0 4px}.library-reader-head p{margin:0;color:var(--muted)}
.library-page-stage{background:#eef4f0;border:1px solid var(--border);border-radius:15px;padding:10px;overflow:auto;display:flex;justify-content:center}.library-page-stage img{display:block;width:100%;max-width:1080px;height:auto;pointer-events:none;user-select:none;-webkit-user-select:none;box-shadow:0 8px 24px rgba(20,72,47,.10)}
.library-reader-controls{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;margin-top:14px}.library-reader-controls #libraryPrev{justify-self:start}.library-reader-controls #libraryNext{justify-self:end}.library-reader-controls strong{font-size:.82rem;color:var(--muted)}.library-reader-controls button:disabled{opacity:.4;cursor:not-allowed}
@media(max-width:900px){.library-redesign-head{align-items:stretch;flex-direction:column}.library-search{width:100%}.library-workspace{grid-template-columns:1fr}.library-topic-panel{min-height:0;border-right:0;border-bottom:1px solid var(--border)}.library-topic-list{grid-template-columns:repeat(2,minmax(0,1fr))}.library-tip{margin-top:14px}}
@media(max-width:620px){.library-topic-list{grid-template-columns:1fr}.library-topic-copy small{display:none}.library-reader{padding:12px}.library-reader-head{flex-direction:column}.library-page-stage{padding:4px}.library-reader-controls{grid-template-columns:1fr 1fr}.library-reader-controls strong{grid-column:1/-1;grid-row:1;text-align:center}.library-reader-controls #libraryPrev{grid-column:1;grid-row:2}.library-reader-controls #libraryNext{grid-column:2;grid-row:2}}

/* v13 — Biblioteca definitiva: materiales independientes */
.library-empty-material{min-height:420px;border:1px dashed #b9d6c3;border-radius:15px;background:#f6fbf8;display:grid;place-content:center;text-align:center;padding:30px}
.library-empty-material[hidden]{display:none}.library-empty-icon{font-size:2.4rem}.library-empty-material h3{margin:10px 0 5px}.library-empty-material p{margin:0;color:var(--muted);max-width:420px}
.library-topic-copy small{font-weight:500}.library-topic[data-material="0"] .library-topic-copy small{color:var(--excel)}


/* v14 — Biblioteca: índice minimizable + zoom de lectura */
.library-workspace{transition:grid-template-columns .25s ease}
.library-topic-panel{transition:width .25s ease,padding .25s ease,border-color .25s ease;overflow:hidden}
.library-topic-panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.library-topic-panel-head h2{margin:0;white-space:nowrap}
.library-index-toggle{border:1px solid #cfe2d6;background:#fff;color:var(--excel);border-radius:10px;min-height:36px;padding:7px 10px;display:inline-flex;align-items:center;justify-content:center;gap:6px;font:inherit;font-size:.78rem;font-weight:800;cursor:pointer;transition:.2s ease}
.library-index-toggle:hover{background:#eaf6ee}.library-index-toggle .toggle-icon{font-size:1.2rem;line-height:1}
.library-workspace.index-collapsed{grid-template-columns:64px minmax(0,1fr)}
.library-workspace.index-collapsed .library-topic-panel{padding:12px 9px;align-items:center}
.library-workspace.index-collapsed .library-topic-panel-head{margin:0;width:100%;justify-content:center}
.library-workspace.index-collapsed .library-topic-panel-head h2,.library-workspace.index-collapsed .library-topic-list,.library-workspace.index-collapsed .library-tip{display:none}
.library-workspace.index-collapsed .library-index-toggle{width:44px;height:44px;padding:0}
.library-workspace.index-collapsed .library-index-toggle .toggle-label{display:none}
.library-workspace.index-collapsed .library-index-toggle .toggle-icon{transform:rotate(180deg);font-size:1.45rem}
.library-reader-tools{display:flex;align-items:flex-end;flex-direction:column;gap:10px}
.library-zoom{display:inline-grid;grid-template-columns:38px 66px 38px;align-items:center;border:1px solid #cfe2d6;border-radius:11px;overflow:hidden;background:#fff;box-shadow:0 3px 10px rgba(20,72,47,.05)}
.library-zoom button{height:36px;border:0;background:#fff;color:var(--excel);font:inherit;font-weight:900;cursor:pointer}.library-zoom button:hover{background:#eaf6ee}.library-zoom .zoom-value{border-left:1px solid #dce9e1;border-right:1px solid #dce9e1;color:var(--text);font-size:.78rem;font-weight:800}
.library-page-stage{justify-content:flex-start;scroll-behavior:smooth}
.library-page-stage img{
  width:var(--library-zoom,100%);
  min-width:var(--library-zoom,100%);
  max-width:none;
  flex:0 0 auto;
  margin:0 auto;
  transition:width .16s ease,min-width .16s ease
}
@media(max-width:900px){.library-workspace.index-collapsed{grid-template-columns:1fr}.library-workspace.index-collapsed .library-topic-panel{padding:8px 12px;min-height:0;border-bottom:1px solid var(--border);align-items:flex-end}.library-workspace.index-collapsed .library-topic-panel-head{justify-content:flex-end}.library-workspace.index-collapsed .library-index-toggle{width:auto;height:38px;padding:0 12px}.library-workspace.index-collapsed .library-index-toggle .toggle-label{display:inline}.library-reader-tools{align-items:flex-start}}
@media(max-width:620px){.library-reader-tools{width:100%;flex-direction:row;align-items:center;justify-content:space-between;flex-wrap:wrap}.library-zoom{grid-template-columns:40px 70px 40px}}


/* v15 — Corrección de zoom real: evita que Flexbox reduzca la página al ancho del visor.
   Por encima de 100%, la imagen conserva el ancho ampliado y el visor habilita desplazamiento horizontal. */
.library-page-stage{overflow:auto;align-items:flex-start}
.library-page-stage img{flex-shrink:0}


/* v16 — Videos explicativos por tema */
.library-topic{grid-template-columns:38px 1fr 34px 18px}
.library-video-icon{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#e9f6ee;color:var(--excel);font-size:.72rem;cursor:pointer;transition:.18s ease;justify-self:end;box-shadow:inset 0 0 0 1px #d1e8d9}
.library-video-icon:hover,.library-video-icon:focus{background:var(--excel);color:#fff;outline:none;transform:scale(1.05)}
.library-video-modal[hidden]{display:none!important}.library-video-modal{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;padding:22px}.library-video-backdrop{position:absolute;inset:0;background:rgba(8,32,21,.72);backdrop-filter:blur(3px)}
.library-video-dialog{position:relative;width:min(920px,96vw);background:#fff;border-radius:20px;box-shadow:0 24px 70px rgba(0,0,0,.28);overflow:hidden;z-index:1}.library-video-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px 22px;border-bottom:1px solid var(--border)}.library-video-head h3{margin:5px 0 0;font-size:1.35rem}.library-video-close{width:38px;height:38px;border:0;border-radius:10px;background:#eef6f1;color:var(--excel);font-size:1.7rem;line-height:1;cursor:pointer}.library-video-close:hover{background:#dff0e5}.library-video-frame-wrap{position:relative;aspect-ratio:16/9;background:#0b0b0b}.library-video-frame-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.library-video-empty{min-height:360px;padding:45px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:#f7fbf8}.library-video-empty span{width:68px;height:68px;border-radius:50%;display:grid;place-items:center;background:var(--excel);color:#fff;font-size:1.5rem;margin-bottom:16px;padding-left:4px}.library-video-empty strong{font-size:1.25rem}.library-video-empty p{color:var(--muted);margin:8px 0 0}.video-modal-open{overflow:hidden}
@media(max-width:620px){.library-topic{grid-template-columns:36px 1fr 32px 14px}.library-video-modal{padding:10px}.library-video-head{padding:16px}.library-video-empty{min-height:260px}}


/* v17 — Ajustes de Biblioteca */
.library-index-toggle{color:#1f6fd1;border-color:#b9d2f2;background:#f7fbff}
.library-index-toggle:hover{background:#e8f2ff;color:#1559aa}
.library-index-toggle .toggle-icon{color:#1f6fd1}
.library-topic[data-material="1"] .library-topic-copy small,.library-topic[data-material="2"] .library-topic-copy small,.library-topic[data-material="3"] .library-topic-copy small,.library-topic[data-material="4"] .library-topic-copy small,.library-topic[data-material="5"] .library-topic-copy small{color:var(--excel)}

/* Proyecta+ — corrección del visor PDF integrado (octubre 2026).
   La regla .library-page-stage img { display:block } anulaba el atributo hidden
   de la imagen antigua y podía desplazar el iframe PDF fuera del área visible. */
.library-page-stage[hidden],
.library-page-stage img[hidden],
.library-page-stage iframe[hidden],
.library-reader-controls[hidden] {
  display: none !important;
}
.library-page-stage iframe:not([hidden]) {
  display: block;
  flex: 1 0 100%;
  width: 100%;
  min-width: 0;
  height: 75vh;
  min-height: 520px;
  border: 0;
  background: #fff;
}

/* Visor continuo PDF.js — sin herramientas nativas del navegador */
.library-page-stage:has(.library-pdf-pages){display:block;overflow:auto;padding:12px;background:#eef4f0}
.library-pdf-pages{display:flex;flex-direction:column;align-items:center;gap:16px;width:100%;min-width:0;user-select:none;-webkit-user-select:none}
.library-pdf-page{display:block;flex:none;max-width:none;background:white;box-shadow:0 6px 22px rgba(20,72,47,.14);height:auto}
.library-pdf-status{padding:36px 12px;text-align:center;color:#506b60;font-weight:600}
.library-pdf-pages:empty{min-height:100px}
.library-reader-controls[hidden],.library-page-stage[hidden]{display:none!important}
@media(max-width:620px){.library-page-stage:has(.library-pdf-pages){padding:6px}.library-pdf-pages{gap:10px}}