/* ============================================================
   app.css — Tema estilo AWS Console (tema claro)
   ============================================================ */
:root{
  --navy:#232f3e;          /* barra superior */
  --navy-2:#161e2d;
  --bg:#f2f3f3;            /* fondo de la app */
  --surface:#ffffff;
  --border:#d5dbdb;
  --border-strong:#7d8998;
  --row-border:#e9ebed;
  --text:#16191f;
  --text-2:#5f6b7a;
  --muted:#8d99a8;
  --link:#0972d3;          /* azul AWS (acción primaria) */
  --link-hover:#033160;
  --accent:#ff9900;        /* naranja de marca AWS */
  --ok:#037f0c;
  --ok-bg:#f2fcf3;
  --warn:#8a6116;
  --danger:#d91515;
  --danger-bg:#fdf3f3;
  --shadow:0 1px 4px rgba(0,28,36,.12);
  --shadow-lg:0 4px 20px rgba(0,28,36,.18);
  --radius:8px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--font);font-size:14px;line-height:1.5;color:var(--text);
     background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{color:var(--text);margin:0 0 .4em;font-weight:700;line-height:1.25}
h1{font-size:24px}h2{font-size:18px}h3{font-size:16px}
p{margin:0 0 1em}
small,.muted{color:var(--text-2)}

/* ---------- Layout: top-bar + sidebar ---------- */
.topbar{height:48px;background:var(--navy);color:#fff;display:flex;align-items:center;
        padding:0 16px;position:sticky;top:0;z-index:40}
.topbar .brand{font-weight:700;color:#fff;display:flex;align-items:center;gap:8px;font-size:15px}
.topbar .brand .logo{width:26px;height:26px;border-radius:4px;background:var(--accent);
        display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:800}
.topbar .brand:hover{text-decoration:none}
.topbar .spacer{flex:1}
.topbar .top-right{display:flex;align-items:center;gap:14px;font-size:13px}
.topbar .top-right a{color:#d5dbdb}
.topbar .top-right a:hover{color:#fff}
.topbar .school-name{color:#fff;font-weight:600;opacity:.9}

.shell{display:flex;min-height:calc(100vh - 48px)}
.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);
         padding:12px 0;flex-shrink:0}
.sidebar .nav-group{padding:6px 16px;font-size:11px;text-transform:uppercase;
         letter-spacing:.06em;color:var(--muted);font-weight:700;margin-top:8px}
.sidebar a.nav-item{display:flex;align-items:center;gap:10px;padding:8px 16px;color:var(--text);
         border-left:3px solid transparent;font-size:14px}
.sidebar a.nav-item:hover{background:#f4f6f7;text-decoration:none}
.sidebar a.nav-item.active{border-left-color:var(--link);background:#f0f7ff;
         color:var(--link-hover);font-weight:600}
.sidebar a.nav-item .ico{width:18px;text-align:center;color:var(--text-2)}
.sidebar a.nav-item.active .ico{color:var(--link)}

.main{flex:1;padding:24px 28px;max-width:100%;overflow-x:auto}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;
           gap:16px;margin-bottom:20px;flex-wrap:wrap}
.page-head .subtitle{color:var(--text-2);font-size:14px;margin-top:2px}

/* ---------- Cards / containers ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
      box-shadow:var(--shadow)}
.card-head{padding:14px 20px;border-bottom:1px solid var(--row-border);font-weight:700;
           display:flex;align-items:center;justify-content:space-between;gap:12px}
.card-body{padding:20px}
.grid{display:grid;gap:16px}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
@media(max-width:860px){.grid.cols-2,.grid.cols-3{grid-template-columns:1fr}
  .sidebar{width:64px}.sidebar .nav-item span:not(.ico),.sidebar .nav-group{display:none}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;font-family:inherit;font-size:14px;
     font-weight:700;padding:6px 16px;border-radius:20px;border:1px solid var(--border-strong);
     background:var(--surface);color:var(--text);cursor:pointer;line-height:20px;
     transition:background .12s,border-color .12s}
.btn:hover{background:#f2f8fd;border-color:var(--link);color:var(--link-hover);text-decoration:none}
.btn-primary{background:var(--link);border-color:var(--link);color:#fff}
.btn-primary:hover{background:#033160;border-color:#033160;color:#fff}
.btn-danger{background:var(--surface);border-color:var(--danger);color:var(--danger)}
.btn-danger:hover{background:var(--danger-bg);color:var(--danger)}
.btn-ghost{border-color:transparent;background:transparent}
.btn-ghost:hover{background:#eef1f2;border-color:transparent;color:var(--text)}
.btn-sm{padding:3px 12px;font-size:13px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- Forms ---------- */
.form-row{margin-bottom:16px}
.form-row label{display:block;font-weight:700;font-size:13px;margin-bottom:5px}
.form-row .hint{color:var(--text-2);font-size:12px;margin-top:4px}
.input,select,textarea{width:100%;font-family:inherit;font-size:14px;color:var(--text);
     padding:7px 11px;border:1px solid var(--border-strong);border-radius:var(--radius);
     background:var(--surface)}
.input:focus,select:focus,textarea:focus{outline:2px solid var(--link);outline-offset:0;
     border-color:var(--link)}
textarea{min-height:80px;resize:vertical}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 18px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
table.data{width:100%;border-collapse:collapse;font-size:14px}
table.data th{text-align:left;background:#fafafa;color:var(--text-2);font-weight:700;
     font-size:12px;text-transform:uppercase;letter-spacing:.03em;padding:10px 14px;
     border-bottom:1px solid var(--border)}
table.data td{padding:10px 14px;border-bottom:1px solid var(--row-border)}
table.data tr:last-child td{border-bottom:none}
table.data tr:hover td{background:#f7fafb}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:700;
       padding:2px 9px;border-radius:12px;background:#eef1f2;color:var(--text-2)}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.warn{background:#fef6e7;color:var(--warn)}
.badge.err{background:var(--danger-bg);color:var(--danger)}
.badge.info{background:#f0f7ff;color:var(--link)}

/* ---------- Alerts ---------- */
.alert{border:1px solid var(--border);border-left-width:4px;border-radius:var(--radius);
       padding:12px 16px;margin-bottom:16px;background:var(--surface)}
.alert.info{border-left-color:var(--link);background:#f0f7ff}
.alert.ok{border-left-color:var(--ok);background:var(--ok-bg)}
.alert.warn{border-left-color:var(--accent);background:#fff8ec}
.alert.err{border-left-color:var(--danger);background:var(--danger-bg)}

/* ---------- Empty state ---------- */
.empty{text-align:center;padding:48px 20px;color:var(--text-2)}
.empty .big{font-size:40px;margin-bottom:8px}

/* ---------- Toast ---------- */
#toast-wrap{position:fixed;top:16px;right:16px;z-index:1000;display:flex;flex-direction:column;gap:10px}
.toast{min-width:260px;max-width:380px;background:var(--navy);color:#fff;padding:12px 16px;
       border-radius:var(--radius);box-shadow:var(--shadow-lg);font-size:14px;
       display:flex;gap:10px;align-items:flex-start;animation:toast-in .18s ease}
.toast.ok{background:#0f5132}.toast.err{background:#842029}.toast.info{background:var(--navy)}
.toast .close{margin-left:auto;cursor:pointer;opacity:.7}
@keyframes toast-in{from{transform:translateY(-8px);opacity:0}to{transform:none;opacity:1}}

/* ---------- Modal ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(22,25,31,.5);z-index:900;
       display:flex;align-items:flex-start;justify-content:center;padding:60px 16px;overflow-y:auto}
.modal{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-lg);
       width:100%;max-width:560px;animation:toast-in .16s ease}
.modal.lg{max-width:820px}
.modal .modal-head{padding:18px 22px;border-bottom:1px solid var(--row-border);
       display:flex;align-items:center;justify-content:space-between}
.modal .modal-head h3{margin:0}
.modal .modal-body{padding:22px}
.modal .modal-foot{padding:16px 22px;border-top:1px solid var(--row-border);
       display:flex;justify-content:flex-end;gap:10px}
.modal .x{cursor:pointer;color:var(--text-2);font-size:20px;line-height:1}

/* ---------- Login page ---------- */
.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;
       background:var(--bg);padding:24px}
.auth-card{width:100%;max-width:400px;background:var(--surface);border:1px solid var(--border);
       border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.auth-card .top{height:5px;background:var(--accent)}
.auth-card .inner{padding:32px}
.auth-card .brand{display:flex;align-items:center;gap:10px;margin-bottom:20px;font-size:20px;
       font-weight:800;color:var(--navy)}
.auth-card .brand .logo{width:34px;height:34px;border-radius:6px;background:var(--navy);
       color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:800}

/* ---------- Wizard steps ---------- */
.steps{display:flex;gap:0;margin-bottom:24px;flex-wrap:wrap}
.steps .step{display:flex;align-items:center;gap:8px;padding:8px 16px;color:var(--text-2);
       font-weight:700;font-size:13px;border-bottom:3px solid var(--border)}
.steps .step.active{color:var(--link);border-bottom-color:var(--link)}
.steps .step.done{color:var(--ok);border-bottom-color:var(--ok)}
.steps .step .num{width:22px;height:22px;border-radius:50%;background:var(--border);
       color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px}
.steps .step.active .num{background:var(--link)}
.steps .step.done .num{background:var(--ok)}

/* ---------- Course / portal cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.course-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
       box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
       transition:box-shadow .12s,transform .12s;cursor:pointer}
.course-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);text-decoration:none}
.course-card .cc-top{height:80px;background:linear-gradient(135deg,var(--navy),#31465f);
       display:flex;align-items:flex-end;padding:12px 16px}
.course-card .cc-top .tag{background:rgba(255,255,255,.15);color:#fff;font-size:11px;
       padding:2px 8px;border-radius:10px;font-weight:700}
.course-card .cc-body{padding:14px 16px;flex:1}
.course-card .cc-body .title{font-weight:700;color:var(--text);font-size:15px}
.course-card .cc-body .meta{color:var(--text-2);font-size:12px;margin-top:4px}
.course-card .cc-foot{padding:10px 16px;border-top:1px solid var(--row-border);
       color:var(--link);font-weight:700;font-size:13px;display:flex;align-items:center;gap:6px}

/* ---------- Error pages ---------- */
.error-page{display:flex;min-height:100vh;align-items:center;justify-content:center;background:var(--bg)}
.error-box{text-align:center}
.error-box h1{font-size:64px;color:var(--navy);margin:0}
.error-box p{color:var(--text-2);margin:8px 0 20px}

/* ---------- Utilities ---------- */
.flex{display:flex}.between{justify-content:space-between}.center{align-items:center}
.gap-8{gap:8px}.gap-16{gap:16px}.wrap{flex-wrap:wrap}
.mt-0{margin-top:0}.mt-8{margin-top:8px}.mt-16{margin-top:16px}.mb-0{margin-bottom:0}
.text-right{text-align:right}.w-full{width:100%}.hidden{display:none!important}
.spin{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.4);
      border-top-color:#fff;border-radius:50%;animation:sp .6s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}