/* Panel admin FoodTech Academy */
:root{--teal:#12b5b0;--azul:#1479ff;--navy:#0b2853;--verde:#27c07a;--gris:#f1f4f8;--linea:#e6eaf0}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Poppins',system-ui,Segoe UI,sans-serif;background:var(--gris);color:#3a3f4a}
a{text-decoration:none;color:inherit}

.layout{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:260px;background:var(--navy);color:#cdd6e2;flex:none;position:fixed;inset:0 auto 0 0;
  display:flex;flex-direction:column;transition:.3s;z-index:40}
.sidebar .brand{padding:22px 24px;font-weight:800;font-size:1.25rem;color:#fff;letter-spacing:.5px;
  display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.08)}
.sidebar .brand b{color:var(--teal)}
.sidebar .brand .mk{width:34px;height:34px;border-radius:8px;transform:rotate(45deg);
  background:conic-gradient(from 45deg,var(--azul),var(--teal),var(--verde));
  display:flex;align-items:center;justify-content:center}
.sidebar .brand .mk i{transform:rotate(-45deg);color:#fff}
.sidebar .rol{padding:12px 24px;font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:#7b89a1}
.menu{list-style:none;flex:1;padding:6px 12px}
.menu a{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:10px;margin-bottom:3px;
  font-size:.92rem;color:#cdd6e2;transition:.2s}
.menu a i{width:20px;text-align:center}
.menu a:hover{background:rgba(255,255,255,.07);color:#fff}
.menu a.activo{background:var(--teal);color:#fff}
.sidebar .salir{padding:16px 24px;border-top:1px solid rgba(255,255,255,.08)}
.sidebar .salir a{color:#ff9d9d;font-size:.9rem;display:flex;gap:10px;align-items:center}

/* Contenido */
.main{margin-left:260px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{background:#fff;padding:16px 28px;display:flex;align-items:center;justify-content:space-between;
  box-shadow:0 1px 8px rgba(0,0,0,.04);position:sticky;top:0;z-index:30}
.topbar .hamb{display:none;background:none;border:none;font-size:1.4rem;color:var(--navy);cursor:pointer}
.topbar .user{display:flex;align-items:center;gap:12px;font-size:.9rem}
.topbar .user .av{width:38px;height:38px;border-radius:50%;background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700}
.content{padding:28px;flex:1}
.page-title{font-size:1.5rem;color:var(--navy);font-weight:700;margin-bottom:22px}

/* Tarjetas KPI */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px;margin-bottom:26px}
.kpi{background:#fff;border-radius:16px;padding:22px;box-shadow:0 8px 24px rgba(11,40,83,.06);
  display:flex;align-items:center;gap:16px}
.kpi .ico{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:1.3rem;color:#fff;flex:none}
.kpi .n{font-size:1.7rem;font-weight:800;color:var(--navy);line-height:1}
.kpi .l{font-size:.85rem;color:#8a929c}

/* Panel / card */
.card{background:#fff;border-radius:16px;box-shadow:0 8px 24px rgba(11,40,83,.06);padding:24px;margin-bottom:24px}
.card h3{color:var(--navy);margin-bottom:18px;font-size:1.1rem}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;flex-wrap:wrap;gap:12px}

/* Tabla */
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--linea);font-size:.9rem}
th{color:#8a929c;font-weight:600;text-transform:uppercase;font-size:.75rem;letter-spacing:.5px}
tbody tr:hover{background:#fafbfc}
.badge{display:inline-block;padding:4px 12px;border-radius:20px;font-size:.75rem;font-weight:600}
.badge.admin{background:#fee2e2;color:#c0392b}
.badge.profesor{background:#dcecff;color:#1479ff}
.badge.alumno{background:#d7f5ec;color:#0e9a95}
.badge.publicado{background:#d7f5ec;color:#0e9a95}
.badge.borrador{background:#fff2d6;color:#b7791f}

/* Botones */
.btn{display:inline-flex;align-items:center;gap:8px;border:none;cursor:pointer;font-family:inherit;
  font-weight:600;font-size:.88rem;padding:10px 18px;border-radius:10px;transition:.2s}
.btn-p{background:var(--azul);color:#fff}.btn-p:hover{background:#0f62d6}
.btn-t{background:var(--teal);color:#fff}.btn-t:hover{filter:brightness(.94)}
.btn-v{background:var(--verde);color:#fff}.btn-v:hover{filter:brightness(.94)}
.btn-d{background:#fee2e2;color:#c0392b}.btn-d:hover{background:#fcd0d0}
.btn-g{background:#eef1f5;color:#3a3f4a}.btn-g:hover{background:#e3e8ee}
.btn-sm{padding:7px 12px;font-size:.8rem;border-radius:8px}

/* Formularios */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.fg{margin-bottom:16px}
.fg label{display:block;font-weight:600;margin-bottom:7px;color:var(--navy);font-size:.88rem}
.fg input,.fg select,.fg textarea{width:100%;padding:11px 14px;border:1.5px solid var(--linea);
  border-radius:10px;font-family:inherit;font-size:.9rem;background:#fff}
.fg textarea{resize:vertical;min-height:90px}
.fg input:focus,.fg select:focus,.fg textarea:focus{outline:none;border-color:var(--azul)}
.help{font-size:.78rem;color:#8a929c;margin-top:5px}

/* Alertas */
.alert{padding:13px 18px;border-radius:12px;margin-bottom:18px;font-size:.9rem;font-weight:500}
.alert-ok{background:#d7f5ec;color:#0e6b57}
.alert-err{background:#fee2e2;color:#c0392b}

/* Login */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(120deg,var(--azul),var(--teal));padding:20px}
.login-box{background:#fff;border-radius:22px;box-shadow:0 30px 60px rgba(0,0,0,.25);
  width:100%;max-width:420px;padding:40px 34px}
.login-box .brand{text-align:center;font-weight:800;font-size:1.6rem;color:var(--navy);margin-bottom:6px}
.login-box .brand b{color:var(--teal)}
.login-box .sub{text-align:center;color:#8a929c;margin-bottom:26px;font-size:.9rem}

/* Player de video */
.video-box{position:relative;padding-top:56.25%;border-radius:14px;overflow:hidden;background:#000;margin-bottom:18px}
.video-box iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.lecc-list{list-style:none}
.lecc-list li{padding:12px 14px;border:1px solid var(--linea);border-radius:10px;margin-bottom:8px;
  display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.lecc-list li:hover,.lecc-list li.activo{border-color:var(--teal);background:#f0fbfa}

/* Examen */
.pregunta{border:1px solid var(--linea);border-radius:12px;padding:18px;margin-bottom:16px}
.pregunta .op{display:flex;align-items:center;gap:10px;padding:8px 0}
.grid2{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:start}

@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.abierta{transform:translateX(0)}
  .main{margin-left:0}
  .topbar .hamb{display:block}
  .form-row,.grid2{grid-template-columns:1fr}
}