/* ===== Aulas · Liceo Libertad ===== */
:root{
  --azul:#1747c8; --azul-2:#0f2f8a; --azul-3:#e8eefc; --llama:#f26b1d; --oro:#f5b301;
  --bg:#f4f6fb; --surface:#fff; --surface-2:#f8f9fd; --line:#e2e7f2; --line-2:#cfd7e8;
  --text:#0f1a33; --muted:#56627f; --soft:#8792ad;
  --ok:#16794a; --ok-bg:#e6f6ec; --warn:#9a5b00; --warn-bg:#fff4dc; --err:#b42318; --err-bg:#fde8e8; --info-bg:#e8eefc;
  --link:#1747c8; --r:14px; --r-sm:10px;
  --sh:0 1px 2px rgba(15,26,51,.05),0 4px 14px rgba(15,26,51,.06);
  --sh-lg:0 20px 50px rgba(15,47,138,.18);
  --font:"Segoe UI Variable","Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0b1020; --surface:#121a2e; --surface-2:#18213a; --line:#243050; --line-2:#33416a;
  --text:#e8edf8; --muted:#a3afcb; --soft:#75819f; --azul-3:#1a2650;
  --ok:#5fd393; --ok-bg:#12301f; --warn:#f2c14e; --warn-bg:#33270c; --err:#ff8a80; --err-bg:#3a1515; --info-bg:#172347; --link:#9db8ff;
  --sh:0 1px 2px rgba(0,0,0,.3),0 6px 18px rgba(0,0,0,.25); color-scheme:dark;
}}
:root[data-theme="dark"]{
  --bg:#0b1020; --surface:#121a2e; --surface-2:#18213a; --line:#243050; --line-2:#33416a;
  --text:#e8edf8; --muted:#a3afcb; --soft:#75819f; --azul-3:#1a2650;
  --ok:#5fd393; --ok-bg:#12301f; --warn:#f2c14e; --warn-bg:#33270c; --err:#ff8a80; --err-bg:#3a1515; --info-bg:#172347; --link:#9db8ff;
  --sh:0 1px 2px rgba(0,0,0,.3),0 6px 18px rgba(0,0,0,.25); color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.55 var(--font);-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--link)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--oro);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.skip{position:absolute;left:-999px;top:8px;background:var(--azul);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
[hidden]{display:none!important}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;background:var(--azul);color:#fff;font-weight:600;padding:10px 18px;border-radius:999px;cursor:pointer;text-decoration:none;transition:transform .12s,background .15s,box-shadow .15s;white-space:nowrap}
.btn:hover{background:var(--azul-2)}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;color:var(--text);border-color:var(--line-2)}
.btn.ghost:hover{background:var(--surface-2)}
.btn.sm{padding:7px 13px;font-size:14px}
.btn.lg{padding:13px 24px;font-size:17px}
.btn.danger{background:var(--err)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-size:18px;display:inline-grid;place-items:center}
.icon-btn:hover{background:var(--surface-2)}
.link-btn{background:none;border:0;color:var(--link);font-weight:600;cursor:pointer;padding:6px}

/* Barra superior */
.topbar{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:saturate(1.6) blur(10px);border-bottom:1px solid var(--line)}
.topbar-in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}
.brand img{border-radius:50%}
.brand span{display:flex;flex-direction:column;line-height:1.1}
.brand strong{font-size:19px;letter-spacing:-.01em}
.brand small{font-size:12px;color:var(--muted);font-weight:500}
.mainnav{display:flex;gap:4px;margin-left:auto}
.mainnav a{color:var(--muted);text-decoration:none;font-weight:600;font-size:15px;padding:8px 12px;border-radius:8px}
.mainnav a:hover{color:var(--text);background:var(--surface-2)}
.top-actions{display:flex;gap:8px;align-items:center}
#btn-docente.on{border-color:var(--ok);color:var(--ok)}
@media (max-width:760px){.mainnav{display:none}.top-actions{margin-left:auto}#btn-docente .lbl{display:none}}

/* Aviso */
.aviso{padding:12px 20px;text-align:center;font-weight:600;background:var(--info-bg);color:var(--azul-2);border-bottom:1px solid var(--line)}
:root[data-theme="dark"] .aviso{color:#c9d6ff}
.aviso.alerta{background:var(--warn-bg);color:var(--warn)}
.aviso.exito{background:var(--ok-bg);color:var(--ok)}

/* Hero */
.hero{position:relative;color:#fff;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1;background:linear-gradient(100deg,rgba(9,26,82,.94) 0%,rgba(15,47,138,.82) 45%,rgba(23,71,200,.35) 100%),url("/assets/img/edificio.jpg") center 40%/cover no-repeat}
@media (max-width:700px){.hero-bg{background-image:linear-gradient(180deg,rgba(9,26,82,.92),rgba(15,47,138,.85)),url("/assets/img/edificio-sm.jpg")}}
.hero-in{padding:72px 20px 56px;max-width:1200px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 14px;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#ffd7a8}
.eyebrow::before{content:"";width:22px;height:3px;border-radius:3px;background:var(--llama)}
.hero h1{font-size:clamp(32px,5vw,54px);line-height:1.05;letter-spacing:-.025em;margin:0 0 14px;max-width:16ch}
.lead{font-size:clamp(16px,2vw,19px);max-width:56ch;margin:0 0 28px;color:#dfe7ff}
.search{display:flex;align-items:center;gap:10px;background:#fff;color:#0f1a33;border-radius:999px;padding:6px 6px 6px 18px;max-width:640px;box-shadow:var(--sh-lg)}
.search input{flex:1;border:0;outline:0;background:transparent;font-size:17px;padding:8px 0;min-width:0;color:#0f1a33}
.search kbd{font:600 12px var(--font);color:#8792ad;border:1px solid #d6dcea;border-radius:6px;padding:2px 7px}
@media (max-width:560px){.search kbd{display:none}.search .btn{padding:10px 14px}}
.hero-quick{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.hero-quick button{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:999px;padding:8px 16px;font-weight:600;cursor:pointer}
.hero-quick button:hover{background:rgba(255,255,255,.22)}
.hero-stats{list-style:none;display:flex;gap:32px;flex-wrap:wrap;padding:0;margin:40px 0 0}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats b{font-size:30px;line-height:1;letter-spacing:-.02em}
.hero-stats span{font-size:13px;color:#c5d2f5;margin-top:4px}

/* Bloques */
.block{padding-top:48px}
.block-head{display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.block-head h2{margin:0;font-size:26px;letter-spacing:-.02em}
.block-head p{margin:0;color:var(--muted)}
.bienvenida{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--llama);border-radius:var(--r);padding:18px 22px;margin:0;box-shadow:var(--sh);white-space:pre-line}
.grid{display:grid;gap:16px}
.grid.asigs{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.grid.apps{grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}
.row-scroll{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory}
.row-scroll .mini{scroll-snap-align:start;flex:0 0 auto}
.skeleton{height:140px;border-radius:var(--r);background:linear-gradient(90deg,var(--surface) 0%,var(--surface-2) 50%,var(--surface) 100%);background-size:200% 100%;animation:sk 1.2s infinite;border:1px solid var(--line)}
@keyframes sk{to{background-position:-200% 0}}

/* Tarjetas */
.card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);transition:transform .15s,box-shadow .15s,border-color .15s}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(15,47,138,.12);border-color:var(--line-2)}
.asig{padding:20px;cursor:pointer;overflow:hidden;text-align:left;width:100%;display:block}
.asig::before{content:"";position:absolute;inset:0 0 auto;height:4px;background:var(--c,var(--azul))}
.asig .a-ic{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;font-size:26px;background:color-mix(in srgb,var(--c,var(--azul)) 14%,transparent);margin-bottom:12px;overflow:hidden}
.asig .a-ic img{width:100%;height:100%;object-fit:cover}
.asig h3{margin:0 0 4px;font-size:18px}
.asig p{margin:0 0 12px;color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.asig .a-meta{display:flex;gap:12px;font-size:13px;color:var(--soft);font-weight:600}
.asig.sel{border-color:var(--c);box-shadow:0 0 0 2px var(--c)}

.app{padding:18px;display:flex;flex-direction:column;gap:10px;cursor:pointer}
.app-top{display:flex;align-items:flex-start;gap:12px}
.app-ic{width:52px;height:52px;flex:0 0 52px;border-radius:14px;display:grid;place-items:center;font-size:28px;background:var(--azul-3);overflow:hidden}
.app-ic img{width:100%;height:100%;object-fit:cover}
.app-meta{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}
.tipo{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.app h3{margin:0;font-size:17px;line-height:1.3}
.app .resumen{margin:0;color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-size:12px;font-weight:600;padding:3px 9px;border-radius:999px;background:color-mix(in srgb,var(--c,var(--azul)) 12%,transparent);color:color-mix(in srgb,var(--c,var(--azul)) 80%,var(--text));border:0;cursor:pointer}
.app-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:10px;border-top:1px solid var(--line);font-size:13px}
.grados{color:var(--soft);font-weight:600}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px;white-space:nowrap}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:var(--warn-bg);color:var(--warn)}
.badge.lock{background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.badge.rev{background:var(--surface-2);color:var(--muted)}
.fav{border:0;background:transparent;font-size:20px;line-height:1;cursor:pointer;color:var(--line-2);padding:2px}
.fav[aria-pressed="true"]{color:var(--oro)}
.dest-flag{position:absolute;top:-8px;right:14px;background:var(--llama);color:#fff;font-size:11px;font-weight:700;padding:2px 9px;border-radius:999px;letter-spacing:.04em}
.mini{display:flex;align-items:center;gap:10px;padding:10px 14px 10px 10px;background:var(--surface);border:1px solid var(--line);border-radius:999px;cursor:pointer;font-weight:600;font-size:14px;box-shadow:var(--sh)}
.mini .app-ic{width:34px;height:34px;flex-basis:34px;border-radius:50%;font-size:18px}

/* Cabecera de asignatura */
.asig-banner{border-radius:var(--r);padding:24px;margin-bottom:28px;background:linear-gradient(120deg,color-mix(in srgb,var(--c) 16%,var(--surface)),var(--surface));border:1px solid color-mix(in srgb,var(--c) 30%,var(--line));display:grid;grid-template-columns:auto 1fr auto;gap:20px;align-items:start}
.asig-banner .a-ic{width:64px;height:64px;border-radius:16px;font-size:34px;display:grid;place-items:center;background:var(--surface);box-shadow:var(--sh);overflow:hidden}
.asig-banner .a-ic img{width:100%;height:100%;object-fit:cover}
.asig-banner h2{margin:0 0 4px;font-size:26px}
.asig-banner p{margin:0;color:var(--muted)}
.programas{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.programas a{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:10px;background:var(--surface);border:1px solid var(--line);font-weight:600;font-size:14px;text-decoration:none;color:var(--text)}
.programas a:hover{border-color:var(--c)}
.tipo-count{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tipo-count button{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:4px 11px;font-size:13px;font-weight:600;cursor:pointer}
.tipo-count button[aria-pressed="true"]{background:var(--c);border-color:var(--c);color:#fff}
@media (max-width:700px){.asig-banner{grid-template-columns:auto 1fr}.asig-banner>.btn{grid-column:1/-1;justify-self:start}}

/* Filtros */
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:20px;padding:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);position:sticky;top:72px;z-index:5;box-shadow:var(--sh)}
.filters input,.filters select{border:1px solid var(--line-2);background:var(--surface);border-radius:10px;padding:8px 10px;font-size:14px;max-width:100%}
.f-search{flex:1 1 180px}
.f-search input{width:100%}
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:10px;overflow:hidden}
.seg button{border:0;background:transparent;padding:8px 12px;font-size:14px;font-weight:600;cursor:pointer;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--azul);color:#fff}
.chip-toggle{border:1px solid var(--line-2);background:var(--surface);border-radius:10px;padding:8px 12px;font-size:14px;font-weight:600;cursor:pointer;color:var(--muted)}
.chip-toggle[aria-pressed="true"]{border-color:var(--oro);color:var(--warn);background:var(--warn-bg)}
@media (max-width:700px){.filters{position:static}.filters label:not(.f-search){flex:1 1 45%}.filters select{width:100%}}
.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.empty-ic{font-size:42px;margin:0}

/* Seguridad */
.sec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.sec-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;box-shadow:var(--sh)}
.sec-card h3{margin:10px 0 6px;font-size:17px}
.sec-card p{margin:0;color:var(--muted);font-size:14px}
.sec-ic{font-size:26px;width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:var(--surface-2)}
.sec-card.ok .sec-ic{background:var(--ok-bg)}.sec-card.warn .sec-ic{background:var(--warn-bg)}
.normas{margin-top:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 26px;box-shadow:var(--sh)}
.normas h3{margin:0 0 10px}
.normas ol{margin:0;padding-left:22px;display:grid;gap:6px;color:var(--muted)}

/* Pie */
.footer{margin-top:64px;background:var(--azul-2);color:#d6e0ff}
.footer-in{display:grid;grid-template-columns:1fr auto;gap:20px;padding-top:32px;padding-bottom:32px;align-items:center}
.foot-brand{display:flex;gap:12px;align-items:center}
.foot-brand img{border-radius:50%;background:#fff}
.foot-brand strong{color:#fff}
.foot-brand span{font-size:14px}
.foot-links{display:flex;gap:18px;flex-wrap:wrap;font-weight:600}
.foot-links a{color:#fff;text-decoration:none}
.foot-note{grid-column:1/-1;margin:0;font-size:13px;color:#9fb1e6;border-top:1px solid rgba(255,255,255,.12);padding-top:16px}
@media (max-width:640px){.footer-in{grid-template-columns:1fr}}

/* Diálogos */
.dlg{border:0;padding:0;border-radius:20px;width:min(680px,calc(100vw - 24px));max-height:calc(100vh - 32px);background:var(--surface);color:var(--text);box-shadow:var(--sh-lg)}
.dlg.sm{width:min(440px,calc(100vw - 24px))}
.dlg::backdrop{background:rgba(9,18,46,.55);backdrop-filter:blur(3px)}
.dlg[open]{animation:pop .18s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.98)}}
.dlg-body{padding:28px;position:relative}
.dlg-x{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;border:0;background:var(--surface-2);cursor:pointer;font-size:15px;color:var(--muted)}
.dlg-actions{display:flex;gap:10px;justify-content:flex-end;flex-wrap:wrap;margin-top:22px}
.doc-ic{font-size:30px;width:56px;height:56px;border-radius:16px;display:grid;place-items:center;background:var(--azul-3)}
.dlg h2{margin:12px 0 6px;font-size:22px}
.field{display:flex;flex-direction:column;gap:6px;margin-top:14px;font-weight:600;font-size:14px}
.field input{border:1px solid var(--line-2);border-radius:10px;padding:11px 12px;background:var(--surface);font-weight:400;font-size:16px}
.err{color:var(--err);background:var(--err-bg);padding:9px 12px;border-radius:10px;font-size:14px;margin:12px 0 0}
.ok-box{color:var(--ok);background:var(--ok-bg);padding:10px 12px;border-radius:10px;font-weight:600}
.app-dlg-head{display:flex;gap:16px;align-items:center;padding-right:30px}
.app-dlg-head .app-ic{width:68px;height:68px;flex-basis:68px;font-size:36px;border-radius:18px}
.app-dlg-head h2{margin:2px 0 4px}
.app-dlg p.desc{white-space:pre-line;margin:16px 0 0}
.app-dlg h4{margin:20px 0 8px;font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.instr{background:var(--surface-2);border-radius:var(--r-sm);padding:12px 14px;white-space:pre-line;font-size:15px}
.ficha{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px;list-style:none;padding:0;margin:0}
.ficha li{display:flex;gap:9px;align-items:flex-start;font-size:14px;padding:9px 11px;border-radius:10px;background:var(--surface-2)}
.ficha li b{font-weight:600}
.ficha .i{flex:0 0 auto}
.ficha li.si{color:var(--ok)}.ficha li.ojo{color:var(--warn)}
.ficha li span{color:var(--text)}
.ext-note{display:flex;gap:10px;align-items:flex-start;margin-top:18px;padding:12px 14px;border-radius:var(--r-sm);background:var(--info-bg);font-size:14px}
.ext-note.http{background:var(--warn-bg);color:var(--warn)}
.dlg-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.dlg-foot{display:flex;gap:10px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:24px;padding-top:18px;border-top:1px solid var(--line)}

/* Visor embebido */
.visor{position:fixed;inset:0;z-index:60;background:var(--bg);display:flex;flex-direction:column}
.visor-bar{display:flex;align-items:center;gap:12px;padding:8px 12px;border-bottom:1px solid var(--line);background:var(--surface)}
.visor-bar strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.visor-host{color:var(--soft);font-size:13px;margin-right:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.visor iframe{flex:1;border:0;width:100%;background:#fff}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);background:#0f1a33;color:#fff;padding:11px 18px;border-radius:12px;font-weight:600;font-size:14px;opacity:0;pointer-events:none;transition:.2s;z-index:80;max-width:calc(100vw - 32px)}
.toast.show{opacity:1;transform:translateX(-50%)}
.maint{min-height:70vh;display:grid;place-items:center;text-align:center;padding:40px 20px}
.maint img{width:96px;border-radius:50%}
.preview-flag{background:var(--warn);color:#fff;text-align:center;font-weight:700;padding:6px;font-size:14px}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}