/* === Game Hub — minimalist light/dark === */
:root {
  --bg: #fafaf9;
  --bg-card: #ffffff;
  --bg-elev: #f4f4f3;
  --text: #1a1a1a;
  --text-muted: #6b6b6b;
  --border: #e5e5e3;
  --accent: #ff6b35;
  --accent-soft: rgba(255, 107, 53, 0.12);
  --shadow: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 2px 4px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.10);
  --radius: 16px;
}

[data-theme="dark"] {
  --bg: #0e0e10;
  --bg-card: #1a1a1d;
  --bg-elev: #232328;
  --text: #f5f5f5;
  --text-muted: #a1a1a8;
  --border: #2a2a30;
  --accent: #ff8c5a;
  --accent-soft: rgba(255, 140, 90, 0.16);
  --shadow: 0 1px 2px rgba(0,0,0,0.4), 0 8px 24px rgba(0,0,0,0.5);
  --shadow-hover: 0 2px 4px rgba(0,0,0,0.5), 0 16px 40px rgba(0,0,0,0.6);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 32px;
  max-width: 1200px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 32px; }
.brand-text h1 { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.brand-text small { color: var(--text-muted); font-size: 12px; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }
.icon-btn {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  background: var(--bg-card); color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}
.icon-btn:hover { background: var(--bg-elev); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.hero {
  text-align: center;
  max-width: 720px; margin: 32px auto 48px;
  padding: 0 24px;
}
.hero h2 {
  font-size: 40px; font-weight: 700; letter-spacing: -0.03em;
  margin: 0 0 8px;
}
.hero p { color: var(--text-muted); font-size: 15px; margin: 0 0 24px; }

.search-row { margin-bottom: 20px; }
.search-input {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 12px 20px;
  max-width: 480px; margin: 0 auto;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.search-input svg { width: 18px; height: 18px; color: var(--text-muted); flex-shrink: 0; }
.search-input input {
  flex: 1; border: none; outline: none; background: transparent;
  color: var(--text); font-size: 14px;
}
.search-input input::placeholder { color: var(--text-muted); }

.filters {
  display: flex; gap: 8px; justify-content: center; flex-wrap: wrap;
}
.chip {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}
.chip:hover { background: var(--bg-elev); }
.chip.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.25s ease, border-color 0.2s;
  display: flex; flex-direction: column;
  cursor: pointer;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent);
}
.card .thumb {
  aspect-ratio: 16 / 9;
  background: var(--bg-elev);
  display: grid; place-items: center;
  font-size: 64px;
  position: relative;
  overflow: hidden;
}
.card .thumb::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, var(--accent-soft), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover .thumb::before { opacity: 1; }
.card .body {
  padding: 16px 18px 20px;
  display: flex; flex-direction: column; gap: 6px;
  flex: 1;
}
.card h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.card .meta {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 4px;
}
.card .tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-elev);
  color: var(--text-muted);
  font-weight: 500;
}
.card .tag.cat-board { background: rgba(59, 130, 246, 0.12); color: #3b82f6; }
.card .tag.cat-puzzle { background: rgba(168, 85, 247, 0.12); color: #a855f7; }
.card .tag.cat-arcade { background: rgba(236, 72, 153, 0.12); color: #ec4899; }
.card .tag.cat-memory { background: rgba(34, 197, 94, 0.12); color: #22c55e; }
.card .desc {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.4;
  margin: 0;
  flex: 1;
}
.card .play {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 8px;
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
}
.card .play svg { width: 14px; height: 14px; transition: transform 0.2s; }
.card:hover .play svg { transform: translateX(3px); }

.card.hidden { display: none; }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty .emoji { font-size: 48px; margin-bottom: 12px; }

.footer {
  text-align: center;
  padding: 24px 16px 48px;
  color: var(--text-muted);
  font-size: 12px;
}
.footer .dot { margin: 0 8px; }
.footer code {
  background: var(--bg-elev);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
}

@media (max-width: 600px) {
  .topbar { padding: 14px 18px; }
  .brand-text h1 { font-size: 18px; }
  .hero h2 { font-size: 28px; }
  .grid { padding: 0 16px 48px; gap: 14px; }
}