/* CSS Variables and Theme */
:root {
  --bg: #0b0c0f;
  --bg-elev: #111319;
  --text: #e6eaf2;
  --muted: #9aa4b2;
  --card: #0f1117;
  --border: #1a1e27;
  --accent: #6ea8fe;
  --accent-2: #22d3ee;
  --ring: 0 0 0 3px color-mix(in oklab, var(--accent) 30%, transparent);

  --radius: 14px;
  --radius-sm: 10px;
  --gap: 1rem;
  --gap-lg: 2rem;
  --shadow: 0 10px 30px rgba(0,0,0,.35), 0 2px 10px rgba(0,0,0,.25);
  --shadow-soft: 0 6px 18px rgba(0,0,0,.28);

  color-scheme: dark;
}

/******** Light Theme (auto + explicit) ********/
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f7f8fb;
    --bg-elev: #ffffff;
    --text: #0f172a;
    --muted: #465066;
    --card: #ffffff;
    --border: #e6e8ef;
    --accent: #2563eb;
    --accent-2: #0ea5e9;
    --ring: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent);
    color-scheme: light;
  }
}

:root[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --text: #0f172a;
  --muted: #465066;
  --card: #ffffff;
  --border: #e6e8ef;
  --accent: #2563eb;
  --accent-2: #0ea5e9;
  --ring: 0 0 0 3px color-mix(in oklab, var(--accent) 25%, transparent);
  color-scheme: light;
}

/* Base Resets */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 80% -10%, color-mix(in oklab, var(--accent) 16%, transparent), transparent),
              radial-gradient(900px 500px at 0% 120%, color-mix(in oklab, var(--accent-2) 14%, transparent), transparent),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color .35s ease, color .25s ease;
}

.container { width: min(1200px, 92vw); margin: 0 auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0; padding: .5rem .75rem; background: var(--accent); color: white; border-radius: 8px;
}
.skip-link:focus { left: .5rem; top: .5rem; box-shadow: var(--ring); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 20; backdrop-filter: saturate(120%) blur(10px); }
.site-header::before {
  content: ""; position: absolute; inset: 0; background: color-mix(in oklab, var(--bg) 72%, transparent); border-bottom: 1px solid var(--border);
}
.header-inner { position: relative; display: flex; align-items: center; justify-content: space-between; padding: 1.1rem 0; }
.brand { display: flex; align-items: center; gap: .75rem; }
.logo { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white; box-shadow: var(--shadow-soft); }
.title { font-size: 1.25rem; letter-spacing: .2px; margin: 0; }
.actions { display: flex; gap: .5rem; align-items: center; }
.search-input { width: clamp(160px, 28vw, 340px); }

/* Tabs */
.tabs { position: relative; display: flex; gap: .5rem; padding: .75rem 0 1.1rem; overflow-x: auto; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
.tab-btn {
  -webkit-tap-highlight-color: transparent;
  padding: .5rem .9rem; border: 1px solid var(--border); border-radius: 999px; background: color-mix(in oklab, var(--card) 70%, transparent);
  color: var(--text); font-weight: 600; letter-spacing: .1px; font-size: .9rem; cursor: pointer; transition: transform .15s ease, background .3s ease, border-color .3s ease;
}
.tab-btn:hover { transform: translateY(-1px); }
.tab-btn.active { background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 10%, var(--card)), var(--card)); border-color: color-mix(in oklab, var(--accent) 30%, var(--border)); }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: var(--gap); padding: var(--gap-lg) 0; }
@media (max-width: 1200px) { .grid { grid-template-columns: repeat(8, 1fr); } }
@media (max-width: 720px) { .grid { grid-template-columns: repeat(4, 1fr); } }

/* Masonry layout variant */
.grid.masonry { display: block; column-gap: var(--gap); }
.grid.masonry { column-count: 3; }
@media (max-width: 1200px) { .grid.masonry { column-count: 2; } }
@media (max-width: 720px) { .grid.masonry { column-count: 1; } }
.grid.masonry .card { display: inline-block; width: 100%; margin: 0 0 var(--gap); break-inside: avoid; }

.card { grid-column: span 4; display: flex; flex-direction: column; gap: .9rem; padding: 1rem; background: linear-gradient(180deg, color-mix(in oklab, var(--card) 85%, transparent), var(--card));
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-soft); position: relative; overflow: hidden; isolation: isolate; animation: enter .5s ease both;
  transition: background-color .35s ease, border-color .35s ease, color .25s ease;
}
@media (max-width: 1200px) { .card { grid-column: span 4; } }
@media (max-width: 720px) { .card { grid-column: span 4; } }
.card::after { content: ""; position: absolute; inset: -30% -20% auto auto; height: 120px; aspect-ratio: 1; background: radial-gradient(closest-side, color-mix(in oklab, var(--accent) 25%, transparent), transparent 70%); transform: rotate(25deg); opacity: .65; pointer-events: none; filter: blur(10px); }

.card-head { display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.card-head .fav-btn { border: 1px solid var(--border); background: color-mix(in oklab, var(--card) 70%, transparent); border-radius: 10px; padding: .35rem .5rem; cursor: pointer; color: var(--muted); transition: transform .15s ease, border-color .3s ease, background .3s ease; }
.card-head .fav-btn[aria-pressed="true"] { color: #fbbf24; border-color: color-mix(in oklab, #fbbf24 40%, var(--border)); }
.card-title { margin: 0; font-size: 1.05rem; letter-spacing: .2px; }
.badge { font-size: .72rem; padding: .25rem .55rem; border-radius: 999px; border: 1px solid var(--border); background: color-mix(in oklab, var(--card) 55%, transparent); color: var(--muted); }
.card-desc { margin: .2rem 0 0; color: var(--muted); font-size: .92rem; }
.preview {
  border-radius: var(--radius-sm); border: 1px dashed var(--border); background: repeating-linear-gradient(45deg, transparent 0 10px, color-mix(in oklab, var(--border) 40%, transparent) 10px 20px);
  min-height: 120px; display: grid; place-items: center; color: var(--muted); font-size: .9rem;
}

.card-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .25rem; }
.btn { -webkit-tap-highlight-color: transparent; appearance: none; border: 1px solid var(--border); background: color-mix(in oklab, var(--card) 80%, transparent); color: var(--text); padding: .55rem .8rem; border-radius: 10px; cursor: pointer; font-weight: 600; letter-spacing: .15px; transition: transform .15s ease, border-color .3s ease, background .3s ease, box-shadow .15s ease; }
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.primary { background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 16%, var(--card)), var(--card)); border-color: color-mix(in oklab, var(--accent) 40%, var(--border)); }
.btn.ghost { background: transparent; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 2rem; }
.footer-inner { display: flex; align-items: center; justify-content: center; padding: 1.25rem 0 2.5rem; color: var(--muted); font-size: .9rem; }

/* Toast */
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px); background: var(--bg-elev); color: var(--text); border: 1px solid var(--border); padding: .65rem .9rem; border-radius: 10px; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: transform .2s ease, opacity .2s ease; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Noscript */
.noscript { margin: 2rem 0; padding: 1rem; background: #fee2e2; color: #7f1d1d; border-radius: 10px; }

/* Animations */
@keyframes enter { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ==========================================
   Utilities: Backgrounds, Gradients, Spacing
   ========================================== */

/* Spacing */
.p-2 { padding: .5rem; }
.p-3 { padding: .75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-2 { padding-top: .5rem; padding-bottom: .5rem; }
.py-3 { padding-top: .75rem; padding-bottom: .75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.m-0 { margin: 0; }
.mb-1 { margin-bottom: .25rem; }
.mb-2 { margin-bottom: .5rem; }
.mb-3 { margin-bottom: .75rem; }
.mb-4 { margin-bottom: 1rem; }
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.gap-4 { gap: 1rem; }

/* Layout */
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }
.center { display: grid; place-items: center; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 1rem; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

/* Rounding & Shadow */
.rounded { border-radius: 12px; }
.rounded-full { border-radius: 999px; }
.shadow { box-shadow: var(--shadow-soft); }
.bordered { border: 1px solid var(--border); }

/* Typography */
.text { color: var(--text); }
.muted { color: var(--muted); }
.fw-600 { font-weight: 600; }
.fs-sm { font-size: .9rem; }
.fs-lg { font-size: 1.25rem; }

/* Background solids (selected palette) */
.bg-slate-50 { background: #f8fafc; color: #0f172a; }
.bg-slate-100 { background: #f1f5f9; color: #0f172a; }
.bg-slate-800 { background: #1f2937; color: #e5e7eb; }
.bg-slate-900 { background: #0b1220; color: #e6eaf2; }

.bg-gray-50 { background: #f9fafb; color: #111827; }
.bg-gray-100 { background: #f3f4f6; color: #111827; }
.bg-gray-800 { background: #1f2937; color: #e5e7eb; }
.bg-gray-900 { background: #111827; color: #e5e7eb; }

.bg-zinc-50 { background: #fafafa; color: #18181b; }
.bg-zinc-100 { background: #f4f4f5; color: #18181b; }
.bg-zinc-800 { background: #27272a; color: #e4e4e7; }
.bg-zinc-900 { background: #18181b; color: #e4e4e7; }

.bg-rose-50 { background: #fff1f2; color: #881337; }
.bg-rose-500 { background: #f43f5e; color: white; }
.bg-rose-600 { background: #e11d48; color: white; }

.bg-red-50 { background: #fef2f2; color: #7f1d1d; }
.bg-red-500 { background: #ef4444; color: white; }
.bg-red-600 { background: #dc2626; color: white; }

.bg-orange-50 { background: #fff7ed; color: #7c2d12; }
.bg-orange-500 { background: #f97316; color: white; }
.bg-orange-600 { background: #ea580c; color: white; }

.bg-amber-50 { background: #fffbeb; color: #78350f; }
.bg-amber-500 { background: #f59e0b; color: #0b0c0f; }
.bg-amber-600 { background: #d97706; color: #0b0c0f; }

.bg-yellow-50 { background: #fefce8; color: #713f12; }
.bg-yellow-500 { background: #eab308; color: #0b0c0f; }
.bg-yellow-600 { background: #ca8a04; color: #0b0c0f; }

.bg-lime-50 { background: #f7fee7; color: #365314; }
.bg-lime-500 { background: #84cc16; color: #0b0c0f; }
.bg-lime-600 { background: #65a30d; color: #0b0c0f; }

.bg-green-50 { background: #f0fdf4; color: #064e3b; }
.bg-green-500 { background: #22c55e; color: #052e1f; }
.bg-green-600 { background: #16a34a; color: #052e1f; }

.bg-emerald-50 { background: #ecfdf5; color: #064e3b; }
.bg-emerald-500 { background: #10b981; color: #052e1f; }
.bg-emerald-600 { background: #059669; color: #052e1f; }

.bg-teal-50 { background: #f0fdfa; color: #134e4a; }
.bg-teal-500 { background: #14b8a6; color: #052e1f; }
.bg-teal-600 { background: #0d9488; color: #052e1f; }

.bg-cyan-50 { background: #ecfeff; color: #164e63; }
.bg-cyan-500 { background: #06b6d4; color: #052e1f; }
.bg-cyan-600 { background: #0891b2; color: #052e1f; }

.bg-sky-50 { background: #f0f9ff; color: #0c4a6e; }
.bg-sky-500 { background: #0ea5e9; color: white; }
.bg-sky-600 { background: #0284c7; color: white; }

.bg-blue-50 { background: #eff6ff; color: #1e3a8a; }
.bg-blue-500 { background: #3b82f6; color: white; }
.bg-blue-600 { background: #2563eb; color: white; }

.bg-indigo-50 { background: #eef2ff; color: #3730a3; }
.bg-indigo-500 { background: #6366f1; color: white; }
.bg-indigo-600 { background: #4f46e5; color: white; }

.bg-violet-50 { background: #f5f3ff; color: #4c1d95; }
.bg-violet-500 { background: #8b5cf6; color: white; }
.bg-violet-600 { background: #7c3aed; color: white; }

.bg-purple-50 { background: #faf5ff; color: #581c87; }
.bg-purple-500 { background: #a855f7; color: white; }
.bg-purple-600 { background: #9333ea; color: white; }

.bg-fuchsia-50 { background: #fdf4ff; color: #701a75; }
.bg-fuchsia-500 { background: #d946ef; color: white; }
.bg-fuchsia-600 { background: #c026d3; color: white; }

.bg-pink-50 { background: #fdf2f8; color: #831843; }
.bg-pink-500 { background: #ec4899; color: white; }
.bg-pink-600 { background: #db2777; color: white; }

/* Gradient utilities */
.bg-gradient-indigo-cyan { background: linear-gradient(135deg, #6366f1, #22d3ee); color: white; }
.bg-gradient-rose-amber { background: linear-gradient(135deg, #f43f5e, #f59e0b); color: #0b0c0f; }
.bg-gradient-emerald-teal { background: linear-gradient(135deg, #10b981, #14b8a6); color: #0b0c0f; }
.bg-gradient-blue-violet { background: linear-gradient(135deg, #3b82f6, #8b5cf6); color: white; }

/* User-requested backgroundImage utilities */
.bg-gradient-violet-top { background: radial-gradient(circle at top, #a78bfa, #6366f1); color: white; }
.bg-gradient-sunset { background: linear-gradient(135deg, #f97316, #f43f5e); color: white; }
.bg-gradient-ocean { background: linear-gradient(135deg, #06b6d4, #3b82f6); color: white; }
.bg-geometric-grid { background: repeating-linear-gradient(45deg, #e2e8f0 0px, #e2e8f0 10px, transparent 10px, transparent 20px); }
.bg-dots-pattern { background: radial-gradient(#94a3b8 1px, transparent 1px); background-size: 20px 20px; }
.bg-wave-pattern { background: repeating-linear-gradient(90deg, #a5b4fc 0px, #c7d2fe 25px, #a5b4fc 50px); }

/* Named backgroundImage utilities (per user theme) */
.bg-sunset { background: linear-gradient(135deg, #FF9A8B, #FF6A88); color: white; }
.bg-aurora { background: radial-gradient(circle at top, #84FAB0, #8FD3F4); color: #0b0c0f; }
.bg-frosty { background: linear-gradient(145deg, #E3FDFD, #CBF1F5); color: #0f172a; }
.bg-cyberpunk { background: linear-gradient(90deg, #7F5AF0, #F25F4C); color: white; }

/* Named solid color utilities (per user theme) */
.bg-neon { background: #39FF14; color: #0b0c0f; }
.bg-ocean { background: #00C9A7; color: #0b0c0f; }
.bg-pastelPink { background: #FFD6A5; color: #0b0c0f; }
.bg-cyberBlue { background: #3DA9FC; color: #0b0c0f; }
.bg-luxuryGold { background: #EEE6CE; color: #0f172a; }

/* Simple component helpers */
.btn-ui { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; border: 0; cursor: pointer; padding: .6rem .9rem; border-radius: 12px; font-weight: 700; letter-spacing: .2px; }
.btn-ui:hover { filter: brightness(1.05); transform: translateY(-1px); transition: transform .15s ease, filter .2s ease; }
.card-ui { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 1rem; box-shadow: var(--shadow-soft); }
.chip-ui { display: inline-flex; align-items: center; border-radius: 999px; padding: .25rem .6rem; border: 1px solid var(--border); gap: .35rem; }
.avatar-ui { width: 40px; height: 40px; border-radius: 999px; display: inline-grid; place-items: center; font-weight: 700; }
.input-ui { width: 100%; padding: .6rem .8rem; border-radius: 10px; border: 1px solid var(--border); background: color-mix(in oklab, var(--card) 70%, transparent); color: var(--text); }
.nav-ui { display: flex; align-items: center; gap: .8rem; }