:root{
  --u-bg: #0b1220;
  --u-surface: rgba(255,255,255,.08);
  --u-surface-2: rgba(255,255,255,.12);
  --u-border: rgba(255,255,255,.16);
  --u-text: #e5e7eb;
  --u-muted: rgba(229,231,235,.72);
  --u-accent: #38bdf8;
  --u-accent-2: #a78bfa;
  --u-good: #22c55e;
  --u-bad: #ef4444;
  --u-warn: #f59e0b;
}

/* Background */
body.utopia-student{
  min-height: 100vh;
  background:
    radial-gradient(900px 500px at 20% 0%, rgba(56,189,248,.25), transparent 60%),
    radial-gradient(900px 500px at 80% 10%, rgba(167,139,250,.22), transparent 55%),
    radial-gradient(900px 600px at 50% 100%, rgba(34,197,94,.15), transparent 60%),
    linear-gradient(180deg, #070b13, var(--u-bg));
  color: var(--u-text);
}

body.utopia-student a{ color: inherit; }
body.utopia-student .text-muted{ color: var(--u-muted) !important; }

.u-container{ max-width: 1100px; }

/* Top bar */
.u-topbar{
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(14px);
  background: linear-gradient(180deg, rgba(11,18,32,.80), rgba(11,18,32,.55));
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.u-topbar .u-brand{
  display:flex; align-items:center; gap:.6rem;
}
.u-badge{
  display:inline-flex; align-items:center; gap:.35rem;
  padding:.18rem .6rem;
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  background: rgba(255,255,255,.06);
  font-size:.78rem;
  color: var(--u-muted);
}

/* Cards */
.u-card{
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.06));
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(0,0,0,.25);
}
.u-card:hover{ border-color: rgba(56,189,248,.28); transform: translateY(-1px); }
.u-card, .u-card *{ transition: .18s ease; }

.u-tile{
  display:block;
  padding: 18px;
  text-decoration:none;
}
.u-tile .u-ico{
  width: 44px; height: 44px; border-radius: 14px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(56,189,248,.12);
  border: 1px solid rgba(56,189,248,.25);
  color: var(--u-accent);
  flex: 0 0 auto;
}
.u-tile .u-title{ font-weight: 700; letter-spacing: .2px; }
.u-tile .u-sub{ color: var(--u-muted); font-size: .9rem; }
.u-pill{
  display:inline-flex; align-items:center;
  gap:.35rem;
  padding: .28rem .65rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  font-size: .82rem;
  color: var(--u-muted);
}

/* Feed */
.u-feed{ display:flex; flex-direction:column; gap: 12px; }
.u-post{
  padding: 16px;
}
.u-post .u-post-head{ display:flex; align-items:center; justify-content:space-between; gap:10px; }
.u-post .u-avatar{
  width: 40px; height: 40px; border-radius: 14px;
  background: rgba(167,139,250,.12);
  border: 1px solid rgba(167,139,250,.25);
  display:flex; align-items:center; justify-content:center;
  font-weight:700;
}
.u-post .u-post-meta{ line-height:1.15; }
.u-post .u-post-meta .name{ font-weight:700; }
.u-post .u-post-meta .sub{ color: var(--u-muted); font-size: .85rem; }
.u-post .u-post-body{ margin-top: 10px; color: #f3f4f6; }
.u-media{
  margin-top: 10px;
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.25);
}
.u-media img{ width:100%; height:auto; display:block; }
.u-media video{ width:100%; display:block; }

/* Tables on dark */
body.utopia-student .table{
  --bs-table-bg: transparent;
  --bs-table-striped-bg: rgba(255,255,255,.04);
  --bs-table-hover-bg: rgba(255,255,255,.06);
  color: var(--u-text);
}
body.utopia-student .table thead th{
  color: rgba(229,231,235,.9);
  border-color: rgba(255,255,255,.10);
}
body.utopia-student .table td, body.utopia-student .table th{
  border-color: rgba(255,255,255,.10) !important;
}

/* Buttons */
body.utopia-student .btn{
  border-radius: 999px;
}
body.utopia-student .btn-outline-secondary{
  border-color: rgba(255,255,255,.22);
  color: rgba(229,231,235,.92);
}
body.utopia-student .btn-outline-secondary:hover{
  background: rgba(255,255,255,.10);
}

/* Mobile */
@media (max-width: 768px){
  .u-container{ padding-left: 14px; padding-right: 14px; }
  .u-tile{ padding: 14px; }
}