*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --clti-navy:    #1a2a4a;
  --clti-gold:    #c9a84c;
  --clti-light:   #f5f5f0;
  --clti-white:   #ffffff;
  --clti-grey:    #6c757d;
  --clti-border:  #dee2e6;
  --clti-success: #28a745;
  --clti-danger:  #dc3545;
  --clti-warning: #ffc107;
  --clti-info:    #17a2b8;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0,0,0,.10);
  --transition: 0.2s ease;
}
body { font-family: Georgia, serif; font-size: 15px; background: var(--clti-light); color: #2c2c2c; line-height: 1.65; min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--clti-navy); text-decoration: none; }
a:hover { color: var(--clti-gold); }
.portal-header { background: var(--clti-navy); color: #fff; padding: 0 2rem; height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; box-shadow: var(--shadow); position: sticky; top: 0; z-index: 100; }
.portal-header__brand { display: flex; align-items: center; gap: .75rem; }
.portal-header__logo { width: 40px; height: 40px; border-radius: 6px; }
.portal-header__name { font-size: 1.05rem; font-weight: bold; color: var(--clti-gold); }
.portal-nav { display: flex; gap: 1.5rem; }
.portal-nav a { color: rgba(255,255,255,.85); font-size: .88rem; padding: .25rem 0; border-bottom: 2px solid transparent; transition: var(--transition); }
.portal-nav a:hover, .portal-nav a.active { color: var(--clti-gold); border-bottom-color: var(--clti-gold); }
.portal-header__user { display: flex; align-items: center; gap: 1rem; font-size: .88rem; color: rgba(255,255,255,.8); }
.notif-bell { position: relative; font-size: 1.2rem; color: #fff; }
.notif-badge { position: absolute; top: -6px; right: -8px; background: var(--clti-gold); color: var(--clti-navy); font-size: .65rem; font-weight: bold; border-radius: 50%; padding: 1px 5px; }
.btn-logout { background: var(--clti-gold); color: var(--clti-navy); padding: .3rem .85rem; border-radius: var(--radius); font-size: .82rem; font-weight: bold; }
.btn-logout:hover { background: #b8922e; color: #fff; }
.portal-main { flex: 1; padding: 2rem; max-width: 1280px; width: 100%; margin: 0 auto; }
.portal-footer { background: var(--clti-navy); color: rgba(255,255,255,.6); text-align: center; font-size: .82rem; padding: 1rem 2rem; }
.card { background: #fff; border: 1px solid var(--clti-border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.5rem; margin-bottom: 1.5rem; }
.card__title { font-size: 1.05rem; font-weight: bold; color: var(--clti-navy); border-bottom: 2px solid var(--clti-gold); padding-bottom: .5rem; margin-bottom: 1rem; }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--clti-navy); color: #fff; border-radius: var(--radius); padding: 1.25rem 1.5rem; text-align: center; }
.stat-card__value { font-size: 2rem; font-weight: bold; color: var(--clti-gold); line-height: 1; }
.stat-card__label { font-size: .82rem; color: rgba(255,255,255,.7); margin-top: .35rem; }
.portal-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.portal-table th { background: var(--clti-navy); color: var(--clti-gold); padding: .7rem 1rem; text-align: left; font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
.portal-table td { padding: .65rem 1rem; border-bottom: 1px solid var(--clti-border); vertical-align: middle; }
.portal-table tr:hover td { background: #f0ede6; }
.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-size: .88rem; font-weight: bold; color: var(--clti-navy); margin-bottom: .35rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: .55rem .85rem; border: 1px solid var(--clti-border); border-radius: var(--radius); font-size: .92rem; font-family: inherit; transition: border-color var(--transition); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--clti-navy); box-shadow: 0 0 0 3px rgba(26,42,74,.1); }
.btn { display: inline-block; padding: .5rem 1.2rem; border-radius: var(--radius); font-size: .9rem; font-weight: bold; cursor: pointer; border: none; transition: var(--transition); text-align: center; font-family: inherit; }
.btn-primary { background: var(--clti-navy); color: #fff; }
.btn-primary:hover { background: #0f1e36; color: var(--clti-gold); }
.btn-gold { background: var(--clti-gold); color: var(--clti-navy); }
.btn-gold:hover { background: #b8922e; color: #fff; }
.btn-danger { background: var(--clti-danger); color: #fff; }
.btn-sm { padding: .3rem .75rem; font-size: .8rem; }
.alert { padding: .85rem 1.2rem; border-radius: var(--radius); margin-bottom: 1rem; font-size: .92rem; border-left: 4px solid; }
.alert-success { background: #d4edda; border-color: var(--clti-success); color: #155724; }
.alert-error   { background: #f8d7da; border-color: var(--clti-danger);  color: #721c24; }
.alert-warning { background: #fff3cd; border-color: var(--clti-warning); color: #856404; }
.alert-info    { background: #d1ecf1; border-color: var(--clti-info);    color: #0c5460; }
.badge { display: inline-block; padding: .2rem .6rem; border-radius: 20px; font-size: .75rem; font-weight: bold; text-transform: uppercase; }
.badge-draft          { background: #e2e3e5; color: #383d41; }
.badge-finalized      { background: #d1ecf1; color: #0c5460; }
.badge-pending        { background: #fff3cd; color: #856404; }
.badge-pending-release{ background: #fff3cd; color: #856404; }
.badge-released       { background: #d4edda; color: #155724; }
.badge-approved       { background: #d4edda; color: #155724; }
.badge-rejected       { background: #f8d7da; color: #721c24; }
.page-header { margin-bottom: 1.5rem; border-bottom: 2px solid var(--clti-gold); padding-bottom: .75rem; }
.page-header h1 { font-size: 1.5rem; color: var(--clti-navy); }
.page-header p { color: var(--clti-grey); font-size: .9rem; }
/* Timer */
.lesson-timer { display: flex; align-items: center; gap: .75rem; background: var(--clti-navy); color: #fff; padding: .65rem 1.25rem; border-radius: 6px; font-size: .9rem; margin-bottom: 1.25rem; }
.timer-display { font-family: 'Courier New', monospace; font-size: 1.4rem; font-weight: bold; color: var(--clti-gold); letter-spacing: .08em; min-width: 70px; }
.timer-display.warning { color: #ffc107; }
.timer-display.expired { color: #dc3545; animation: blink .8s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
/* Responsive */
@media (max-width: 768px) {
  .portal-header { flex-wrap: wrap; height: auto; padding: .75rem 1rem; }
  .portal-nav    { display: none; }
  .portal-main   { padding: 1rem; }
  .stat-grid     { grid-template-columns: 1fr 1fr; }
}