/* ============================================================
   Aula Catto — estilos de la app (extiende base.css)
   Prototipo visual. Reutiliza la paleta de :root de base.css.
   ============================================================ */

/* ---- Banner de prototipo ---- */
.demo-flag{
  position:fixed;top:0;left:0;right:0;z-index:300;
  background:var(--warn);color:#1a1300;text-align:center;
  font-size:12px;font-weight:700;padding:4px;letter-spacing:.3px;
}
body.has-flag{padding-top:26px}

/* ===================== LOGIN / GATE ===================== */
.gate{min-height:100vh;display:grid;place-items:center;padding:30px;position:relative;overflow:hidden;
  background:radial-gradient(150% 100% at 50% 8%, #0b1019 0%, #070a12 45%, #04060b 100%)}
.gate .starfield{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:hidden}
.gate .starfield i{position:absolute;display:block;border-radius:50%}
/* parpadeo: cada estrella respira entre el 10% y el 100% de su opacidad, con fase al azar */
.starfield.sf-tw i{animation:sf-tw 5.65s ease-in-out infinite}
@keyframes sf-tw{0%,100%{opacity:calc(var(--o)*.1)}50%{opacity:var(--o)}}
/* nebulosa de la Vía Láctea: banda diagonal con núcleo cálido/rosado abajo */
.gate .starfield .mw{position:absolute;inset:0;filter:blur(11px);opacity:.9;
  background:
    radial-gradient(80% 12% at 50% 100%, rgba(120,110,88,.10), transparent 70%),
    radial-gradient(38% 20% at 57% 80%, rgba(216,183,140,.30), rgba(216,183,140,0) 62%),
    radial-gradient(22% 12% at 61% 84%, rgba(236,150,168,.22), transparent 60%),
    radial-gradient(11% 7% at 50% 74%, rgba(236,150,168,.16), transparent 60%),
    radial-gradient(30% 26% at 51% 62%, rgba(150,120,95,.20), transparent 66%),
    radial-gradient(34% 30% at 53% 54%, rgba(120,140,196,.16), transparent 68%),
    radial-gradient(26% 30% at 45% 32%, rgba(112,132,188,.13), transparent 70%),
    radial-gradient(18% 22% at 41% 15%, rgba(120,140,186,.10), transparent 72%)}
/* núcleo brillante concentrado (star cloud) */
.gate .starfield .mw-core{position:absolute;left:57%;top:80%;width:150px;height:110px;
  transform:translate(-50%,-50%);filter:blur(6px);border-radius:50%;
  background:radial-gradient(circle at 50% 55%, rgba(240,214,170,.34), rgba(230,160,150,.14) 45%, transparent 70%)}
.gate-card{
  position:relative;z-index:1;
  width:100%;max-width:380px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);padding:30px 28px;box-shadow:var(--shadow);
}
.gate-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;margin-bottom:6px}
.gate-logo .logo{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent2),var(--accent));font-size:18px}
.gate-sub{color:var(--muted);font-size:13.5px;margin-bottom:22px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px}
.field input{
  width:100%;background:var(--bg);border:1px solid var(--line);border-radius:9px;
  padding:11px 13px;color:var(--txt);font-size:14px;outline:none;
}
.field input:focus{border-color:var(--accent)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;background:var(--accent2);color:#fff;border:1px solid var(--accent);
  border-radius:9px;padding:11px 14px;font-size:14px;font-weight:600;cursor:pointer;
}
.btn:hover{background:var(--accent);text-decoration:none}
.btn.ghost{background:transparent;color:var(--muted);border-color:var(--line)}
.btn.ghost:hover{color:var(--txt);border-color:var(--accent);background:transparent}
.btn.sm{width:auto;padding:7px 13px;font-size:13px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.gate-demo{margin-top:22px;border-top:1px dashed var(--line);padding-top:18px}
.gate-demo p{font-size:11.5px;color:var(--soft);margin:0 0 10px;text-align:center}
.gate-demo .row{display:flex;gap:10px}

/* ===================== APP SHELL ===================== */
.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.side{
  background:var(--panel);border-right:1px solid var(--line);padding:20px 16px;
  display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh;
}
.side .brand{display:flex;align-items:center;gap:9px;font-weight:700;font-size:17px;padding:4px 6px 16px}
.side .brand .logo{width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent2),var(--accent));font-size:15px}
.side a.nav{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;
  color:var(--muted);font-size:14px;cursor:pointer;border:1px solid transparent;
}
.side a.nav:hover{color:var(--txt);text-decoration:none}
.side a.nav.active{background:var(--panel2);color:var(--txt);border-color:var(--line)}
.side .spacer{flex:1}
.side .me{display:flex;align-items:center;gap:10px;padding:10px 8px;border-top:1px solid var(--line);margin-top:8px}
.side .me img,.side .me .ph{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none;
  background:var(--panel2);display:grid;place-items:center;color:var(--soft);font-size:14px;border:1px solid var(--line)}
.side .me b{font-size:13px;display:block}
.side .me span{font-size:11px;color:var(--soft)}

.main{padding:26px 30px;max-width:1100px}
.main h1{font-size:24px;margin:0 0 4px}
.main .crumb{color:var(--soft);font-size:12.5px;margin-bottom:22px}

/* ---- Fondo Vía Láctea detrás del contenido del panel ---- */
.main{position:relative}
.main > .starfield{position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none}
.main > .starfield i{position:absolute;display:block;border-radius:50%}
.main > *:not(.starfield){position:relative;z-index:1}
.main .starfield .mw{position:absolute;inset:0;filter:blur(12px);opacity:.85;
  background:
    radial-gradient(24% 40% at 84% 70%, rgba(216,183,140,.20), transparent 62%),
    radial-gradient(14% 24% at 88% 74%, rgba(236,150,168,.13), transparent 60%),
    radial-gradient(32% 46% at 74% 52%, rgba(150,120,95,.11), transparent 68%),
    radial-gradient(40% 56% at 62% 38%, rgba(120,140,196,.10), transparent 70%),
    radial-gradient(30% 46% at 48% 22%, rgba(112,132,188,.08), transparent 72%)}
.main .starfield .mw-core{position:absolute;left:84%;top:70%;width:150px;height:90px;
  transform:translate(-50%,-50%);filter:blur(7px);border-radius:50%;
  background:radial-gradient(circle at 50% 55%, rgba(240,214,170,.24), rgba(230,160,150,.10) 45%, transparent 70%)}

/* ---- Stat cards ---- */
.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:26px}
.scard{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.scard b{display:block;font-size:26px;color:var(--accent)}
.scard span{font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.scard.ok b{color:var(--ok)} .scard.warn b{color:var(--warn)} .scard.hot b{color:var(--hot)}

/* ---- Listas / tarjetas de actividad ---- */
.act-list{display:flex;flex-direction:column;gap:12px}
.act{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  display:flex;align-items:center;gap:16px;cursor:pointer;transition:border-color .14s;
}
.act:hover{border-color:var(--accent)}
.act .ai{flex:1;min-width:0}
.act .ai h3{margin:0 0 3px;font-size:15.5px}
.act .ai .am{font-size:12px;color:var(--muted)}
.act .due{font-size:11.5px;color:var(--soft);white-space:nowrap}
.act .due.soon{color:var(--warn)}

/* ---- Badges de estado / nota ---- */
.badge2{font-size:11px;font-weight:700;padding:3px 10px;border-radius:20px;white-space:nowrap}
.b-pend{background:#3a2f12;color:var(--warn)}
.b-ent{background:#11314a;color:var(--accent)}
.b-cal{background:#163a1c;color:var(--ok)}
.b-falta{background:#3a1212;color:var(--hot)}
.nota{font-weight:800;font-size:15px;color:var(--ok)}

/* ---- Tablas (profesor) ---- */
.tbl-wrap{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel)}
table.t{border-collapse:collapse;width:100%;font-size:13.5px}
table.t th,table.t td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line)}
table.t thead th{background:var(--panel2);color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.4px}
table.t tbody tr:last-child td{border-bottom:0}
table.t tbody tr:hover{background:var(--panel2)}
table.t .stu{display:flex;align-items:center;gap:10px}
table.t .stu img,table.t .stu .ph{width:30px;height:30px;border-radius:50%;object-fit:cover;
  background:var(--panel2);display:grid;place-items:center;color:var(--soft);font-size:12px;border:1px solid var(--line)}

/* ---- Perfil estudiante ---- */
.profile{display:flex;align-items:center;gap:20px;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:22px;margin-bottom:26px}
.profile .pic{width:88px;height:88px;border-radius:50%;object-fit:cover;border:2px solid var(--line);
  background:var(--panel2);display:grid;place-items:center;color:var(--soft);font-size:30px}
.profile .pinfo h2{margin:0 0 3px;font-size:20px}
.profile .pinfo p{margin:0;color:var(--muted);font-size:13px}

/* ---- Zona de subida ---- */
.drop{border:1.5px dashed var(--line);border-radius:12px;padding:26px;text-align:center;
  color:var(--muted);font-size:13.5px;cursor:pointer;transition:border-color .14s,background .14s}
.drop:hover{border-color:var(--accent);background:rgba(88,166,255,.05)}
.drop .di{font-size:30px;display:block;margin-bottom:8px}

/* ---- Modal ---- */
.modal-bg{position:fixed;inset:0;background:rgba(2,6,12,.66);z-index:400;display:none;
  align-items:flex-start;justify-content:center;padding:40px 20px;overflow:auto;backdrop-filter:blur(3px)}
.modal-bg.open{display:flex}
.modal{width:100%;max-width:640px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--shadow)}
.modal .mh{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  padding:20px 22px;border-bottom:1px solid var(--line)}
.modal .mh h3{margin:0;font-size:18px} .modal .mh .mc{font-size:12px;color:var(--muted);margin-top:3px}
.modal .x{cursor:pointer;color:var(--muted);font-size:20px;line-height:1;background:none;border:0}
.modal .mb{padding:20px 22px;display:flex;flex-direction:column;gap:16px}
.modal label{font-size:12px;color:var(--muted);display:block;margin-bottom:6px}
.modal textarea,.modal input,.modal select{width:100%;background:var(--bg);border:1px solid var(--line);
  border-radius:9px;padding:10px 12px;color:var(--txt);font-size:14px;outline:none;font-family:inherit}
.modal textarea:focus,.modal input:focus,.modal select:focus{border-color:var(--accent)}
.modal .mf{padding:16px 22px;border-top:1px solid var(--line);display:flex;gap:10px;justify-content:flex-end}
.consigna{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:14px;font-size:13.5px;color:var(--txt)}
.grade-box{background:linear-gradient(135deg,rgba(63,185,80,.12),rgba(31,111,235,.06));
  border:1px solid var(--line);border-radius:10px;padding:14px}
.grade-box .gn{font-size:22px;font-weight:800;color:var(--ok)}

.section-title{font-size:12px;text-transform:uppercase;letter-spacing:1.2px;color:var(--soft);margin:0 0 12px}
.inline{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

@media(max-width:760px){
  .app{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center}
  .side .spacer{display:none} .side .me{border-top:0;margin-top:0;margin-left:auto}
  .side a.nav{padding:8px 10px}
}