/* UCCA College — Full Shell CSS with Light/Dark Theme */

:root {
  --bg-primary:    #0a0f1e;
  --bg-surface:    #111827;
  --bg-banner:     #1e3a5f;
  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --accent:        #4a90d9;
  --border:        rgba(74,144,217,0.2);
  --card-shadow:   0 4px 24px rgba(0,0,0,0.4);
  --transition:    background 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
[data-theme="light"] {
  --bg-primary:    #f8fafc;
  --bg-surface:    #ffffff;
  --bg-banner:     #dbeafe;
  --text-primary:  #0f172a;
  --text-secondary:#475569;
  --accent:        #1d4ed8;
  --border:        rgba(29,78,216,0.15);
  --card-shadow:   0 4px 24px rgba(0,0,0,0.08);
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg-primary:    #f8fafc;
    --bg-surface:    #ffffff;
    --bg-banner:     #dbeafe;
    --text-primary:  #0f172a;
    --text-secondary:#475569;
    --accent:        #1d4ed8;
    --border:        rgba(29,78,216,0.15);
    --card-shadow:   0 4px 24px rgba(0,0,0,0.08);
  }
}

/* ── Global Reset for shell pages ── */
.ucca-shell { margin: 0; padding: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg-primary); color: var(--text-primary); line-height: 1.7; transition: var(--transition); -webkit-font-smoothing: antialiased; }
.ucca-shell *, .ucca-shell *::before, .ucca-shell *::after { box-sizing: border-box; margin: 0; padding: 0; }
.ucca-shell a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
.ucca-shell a:hover { text-decoration: underline; }

/* ── Maintenance Banner ── */
.ucca-banner { background: var(--bg-banner); border-left: 4px solid var(--accent); padding: 0.65rem 1.5rem; font-size: 0.85rem; color: var(--text-primary); text-align: center; letter-spacing: 0.02em; transition: var(--transition); }

/* ── Navigation ── */
.ucca-nav { display: flex; align-items: center; justify-content: space-between; padding: 0 2rem; height: 60px; background: var(--bg-surface); border-bottom: 1px solid var(--border); transition: var(--transition); }
.ucca-nav-brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; }
.ucca-nav-brand img { height: 32px; width: 32px; }
.ucca-nav-brand span { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); letter-spacing: 0.04em; }
.ucca-nav-links { display: flex; align-items: center; gap: 1.8rem; }
.ucca-nav-links a { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); text-decoration: none; transition: color 0.2s; letter-spacing: 0.02em; }
.ucca-nav-links a:hover { color: var(--accent); text-decoration: none; }
.ucca-nav-login { padding: 0.4rem 1.2rem; border: 1px solid var(--border); border-radius: 6px; font-size: 0.85rem; font-weight: 500; color: var(--accent) !important; transition: all 0.2s; }
.ucca-nav-login:hover { background: var(--accent); color: var(--bg-primary) !important; border-color: var(--accent); }

/* ── Page Container ── */
.ucca-page { max-width: 820px; margin: 0 auto; padding: 3rem 2rem 4rem; }
.ucca-page h1 { font-size: 2rem; font-weight: 700; margin-bottom: 1.5rem; letter-spacing: -0.02em; }
.ucca-page h2 { font-size: 1.3rem; font-weight: 600; margin: 2rem 0 0.8rem; color: var(--text-primary); }
.ucca-page p { color: var(--text-secondary); margin-bottom: 1rem; }
.ucca-page strong { color: var(--text-primary); }

/* ── Hero (front page) ── */
.ucca-hero { min-height: calc(100vh - 100px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; position: relative; overflow: hidden; padding: 2rem; }
.ucca-hero::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 30% 20%, rgba(74,144,217,0.06) 0%, transparent 60%), radial-gradient(ellipse at 70% 80%, rgba(45,91,255,0.04) 0%, transparent 60%); pointer-events: none; }
.ucca-hero-inner { position: relative; z-index: 1; }
.ucca-hero-logo { height: 72px; width: 72px; margin-bottom: 1.5rem; }
.ucca-hero h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 0.4em; }
.ucca-hero-sub { font-size: clamp(1rem, 2.5vw, 1.3rem); color: var(--text-secondary); font-weight: 300; margin-bottom: 2.5rem; }
.ucca-hero-status { display: inline-flex; align-items: center; gap: 0.75rem; font-size: 0.85rem; color: var(--text-secondary); letter-spacing: 0.04em; text-transform: uppercase; background: var(--bg-banner); padding: 0.6rem 1.4rem; border-radius: 8px; border: 1px solid var(--border); }
.ucca-pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; animation: ucca-pulse 2.5s ease-in-out infinite; }
@keyframes ucca-pulse { 0%,100% { opacity: 0.4; box-shadow: 0 0 0 0 rgba(74,144,217,0.4); } 50% { opacity: 1; box-shadow: 0 0 12px 4px rgba(74,144,217,0.2); } }
.ucca-hero::after { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, rgba(74,144,217,0.3), transparent); animation: ucca-scan 8s linear infinite; pointer-events: none; }
@keyframes ucca-scan { 0% { top: 0; opacity: 0; } 5% { opacity: 1; } 95% { opacity: 1; } 100% { top: 100%; opacity: 0; } }

/* ── Course Cards ── */
.ucca-cards { display: grid; grid-template-columns: 1fr; gap: 1.2rem; margin: 2rem 0; }
.ucca-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; box-shadow: var(--card-shadow); transition: var(--transition); }
.ucca-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 0.5rem; color: var(--text-primary); }
.ucca-card p { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }
.ucca-card-tag { display: inline-block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); background: rgba(74,144,217,0.1); padding: 0.2rem 0.6rem; border-radius: 4px; margin-bottom: 0.8rem; }

/* ── Entity Table ── */
.ucca-entities { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 2rem 0; }
.ucca-entity { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; transition: var(--transition); }
.ucca-entity h3 { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 1rem; font-weight: 600; }
.ucca-entity p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 0.3rem; line-height: 1.5; }
.ucca-entity strong { color: var(--text-primary); font-weight: 600; }

/* ── Footer ── */
.ucca-footer { border-top: 1px solid var(--border); padding: 1.5rem 2rem; text-align: center; font-size: 0.8rem; color: var(--text-secondary); transition: var(--transition); }
.ucca-footer a { color: var(--text-secondary); margin: 0 0.6rem; }
.ucca-footer a:hover { color: var(--accent); }
.ucca-footer-copy { margin-top: 0.5rem; color: var(--text-secondary); opacity: 0.6; }

/* ── Legal pages ── */
.ucca-legal h1 { font-size: 1.6rem; }
.ucca-legal p { font-size: 0.95rem; line-height: 1.8; }
.ucca-legal ul { padding-left: 1.5rem; margin-bottom: 1rem; }
.ucca-legal li { color: var(--text-secondary); margin-bottom: 0.4rem; font-size: 0.95rem; }
.ucca-legal .ucca-date { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 2rem; }

/* ── Theme Toggle ── */
#ucca-theme-toggle { position: fixed; bottom: 24px; right: 24px; z-index: 9999; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg-surface); color: var(--text-primary); cursor: pointer; font-size: 18px; transition: all 0.2s; display: flex; align-items: center; justify-content: center; }
#ucca-theme-toggle:hover { border-color: var(--accent); box-shadow: 0 0 12px rgba(74,144,217,0.2); }

/* ── Responsive ── */
@media (max-width: 640px) {
  .ucca-nav { padding: 0 1rem; }
  .ucca-nav-links { gap: 1rem; }
  .ucca-nav-links a:not(.ucca-nav-login) { display: none; }
  .ucca-page { padding: 2rem 1.2rem 3rem; }
  .ucca-entities { grid-template-columns: 1fr; }
  .ucca-hero { padding: 1.5rem; }
  .ucca-footer { padding: 1.2rem 1rem; }
}
@media (prefers-reduced-motion: reduce) {
  .ucca-pulse { animation: none; opacity: 1; }
  .ucca-hero::after { animation: none; display: none; }
}