/* Chronoverse Nexus — portal landing page.
   Static, self-contained, theme-aware (light/dark via prefers-color-scheme). */

:root {
  --bg: #0f1226;
  --bg-glow: #1b2350;
  --surface: #171a33;
  --surface-hover: #1f2444;
  --border: #2b3160;
  --text: #eef0fb;
  --text-dim: #a7adcf;
  --accent: #8b9cff;
  --live: #34d399;
  --live-bg: rgba(52, 211, 153, 0.14);
  --soon: #9aa0c9;
  --soon-bg: rgba(154, 160, 201, 0.14);
  --radius: 16px;
  --maxw: 880px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f4f5fb;
    --bg-glow: #e4e8ff;
    --surface: #ffffff;
    --surface-hover: #f7f8ff;
    --border: #e2e5f2;
    --text: #1a1d33;
    --text-dim: #5b6088;
    --accent: #4f5fd6;
    --live: #0f9d63;
    --live-bg: rgba(15, 157, 99, 0.12);
    --soon: #6b7096;
    --soon-bg: rgba(107, 112, 150, 0.12);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1100px 520px at 50% -10%, var(--bg-glow), transparent 70%),
    var(--bg);
  display: flex;
  flex-direction: column;
  line-height: 1.5;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
  z-index: 10;
}
.skip-link:focus { left: 0; }

/* Hero */
.hero {
  text-align: center;
  padding: clamp(3rem, 10vw, 6rem) 1.25rem 1.5rem;
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; }
.mark {
  font-size: clamp(2rem, 7vw, 3rem);
  color: var(--accent);
  filter: drop-shadow(0 0 18px color-mix(in srgb, var(--accent) 55%, transparent));
  margin-bottom: 0.4rem;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 7vw, 3.25rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}
.tagline {
  margin: 0.75rem auto 0;
  max-width: 34ch;
  color: var(--text-dim);
  font-size: clamp(1rem, 2.6vw, 1.15rem);
}

/* Apps */
main { flex: 1; }
.apps {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
  width: 100%;
}
.section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin: 1rem 0 0.9rem;
  font-weight: 600;
}

.card-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: 1fr;
}
@media (min-width: 560px) {
  .card-grid { grid-template-columns: 1fr 1fr; }
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.card:not(.is-soon):hover,
.card:not(.is-soon):focus-within {
  transform: translateY(-2px);
  border-color: var(--accent);
  background: var(--surface-hover);
}

.card-link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1.15rem 1.2rem;
  text-decoration: none;
  color: inherit;
  min-height: 84px;
}
a.card-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius);
}

.card-icon {
  font-size: 1.9rem;
  line-height: 1;
  flex: 0 0 auto;
}
.card-body { display: flex; flex-direction: column; gap: 0.2rem; flex: 1; }
.card-title {
  font-weight: 650;
  font-size: 1.08rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.card-desc { color: var(--text-dim); font-size: 0.92rem; }
.card-arrow {
  color: var(--accent);
  font-size: 1.2rem;
  flex: 0 0 auto;
  transition: transform 0.15s ease;
}
.card:not(.is-soon):hover .card-arrow { transform: translateX(3px); }

.is-soon { opacity: 0.72; }
.is-soon .card-link { cursor: default; }

.badge {
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-live { color: var(--live); background: var(--live-bg); }
.badge-soon { color: var(--soon); background: var(--soon-bg); }

/* Footer */
.site-footer {
  text-align: center;
  padding: 1.5rem 1.25rem 2.5rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}
.site-footer a { color: var(--text-dim); }
.site-footer a:hover { color: var(--accent); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}