/* shared-theme.css — Unified design system for all Quran MCP pages */

/* ── Theme Variables ── */
:root {
  --bg: #0c0c0c;
  --surface: #141414;
  --surface-2: #1a1a1a;
  --code-bg: #111111;
  --border: #222;
  --border-hover: #333;
  --text: #e0e0e0;
  --text-heading: #f0f0f0;
  --muted: #999;
  --faint: #555;
  --faintest: #1e1e1e;
  --green: #4ade80;
  --green-dim: #166534;
  --green-bg: rgba(74, 222, 128, 0.06);
  --green-border: rgba(74, 222, 128, 0.12);
  --amber: #fbbf24;
  --amber-bg: rgba(251, 191, 36, 0.04);
  --amber-border: rgba(251, 191, 36, 0.12);
  --link: #58a6ff;
  --red: #ff9e9e;
  --red-dim: #7a3a3a;
  --code-block-bg: #0d0d0d;
  --code-block-border: #222;
  --grid-opacity: 0.012;
  --glow-opacity: 0.04;
}
[data-theme="light"] {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-2: #f0f0ee;
  --code-bg: #f5f5f3;
  --border: #e0e0de;
  --border-hover: #ccccc9;
  --text: #1a1a1a;
  --text-heading: #111;
  --muted: #666;
  --faint: #aaa;
  --faintest: #f0f0f0;
  --green: #16a34a;
  --green-dim: #bbf7d0;
  --green-bg: rgba(22, 163, 74, 0.06);
  --green-border: rgba(22, 163, 74, 0.18);
  --amber: #d97706;
  --amber-bg: rgba(217, 119, 6, 0.04);
  --amber-border: rgba(217, 119, 6, 0.15);
  --link: #2563eb;
  --red: #dc2626;
  --red-dim: #b91c1c;
  --code-block-bg: #f5f5f3;
  --code-block-border: #e0e0de;
  --grid-opacity: 0.03;
  --glow-opacity: 0.025;
}

/* ── Reset ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body {
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Grid Background + Glows ── */
.grid-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,var(--grid-opacity)) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,var(--grid-opacity)) 1px, transparent 1px);
  background-size: 60px 60px;
}
[data-theme="light"] .grid-bg {
  background-image:
    linear-gradient(rgba(0,0,0,var(--grid-opacity)) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,var(--grid-opacity)) 1px, transparent 1px);
}
.glow { position: fixed; border-radius: 50%; filter: blur(150px); pointer-events: none; z-index: 0; }
.glow-1 { width: 500px; height: 500px; top: -150px; right: -100px; background: rgba(74,222,128,var(--glow-opacity)); }
.glow-2 { width: 400px; height: 400px; bottom: 10%; left: -100px; background: rgba(74,222,128,calc(var(--glow-opacity) * 0.5)); }

/* ── Base Typography ── */
a { color: var(--link); text-decoration: none; transition: color .15s; }
a:hover { color: var(--green); }
code {
  font-family: 'Cascadia Code', 'SF Mono', monospace;
  font-size: .84em;
  letter-spacing: .015em;
  padding: 2px 6px;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
}

/* ── Theme Toggle ── */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.theme-toggle button {
  all: unset;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  transition: background .15s, color .15s;
  color: var(--faint);
}
.theme-toggle button svg { width: 14px; height: 14px; }
.theme-toggle button.active {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0,0,0,.15);
}
.theme-toggle button:hover:not(.active) { color: var(--muted); }
.theme-toggle button:focus-visible { outline: 2px solid var(--green); outline-offset: 1px; }

/* ── Mobile Theme FAB ── */
.theme-fab {
  display: none;
  position: fixed;
  bottom: 20px; right: 20px;
  z-index: 90;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,.2);
  align-items: center;
  justify-content: center;
  transition: transform .15s;
}
.theme-fab:active { transform: scale(.92); }
.theme-fab svg { width: 18px; height: 18px; }

/* ── Back Link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: 'Cascadia Code', monospace;
  font-size: .72rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color .15s;
}
.back-link:hover { color: var(--green); text-decoration: none; }
.back-link svg { width: 14px; height: 14px; }

/* ── Animation ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive: Toggle/FAB swap ── */
@media (max-width: 720px) {
  .theme-toggle { display: none; }
  .theme-fab { display: flex; }
}