:root {
  color-scheme: dark;
  --bg: #070b14;
  --bg-elev: #0d1324;
  --header-bg: rgba(7, 11, 20, 0.8);
  --footer-bg: #070b14;
  --panel: rgba(15, 23, 42, 0.78);
  --panel-soft: rgba(30, 41, 59, 0.58);
  --line: rgba(148, 163, 184, 0.22);
  --text: #e8ecff;
  --muted: #9ba8cc;
  --accent: #6ee7ff;
  --accent-2: #8b5cf6;
  --accent-warm: #f59e0b;
  --danger: #fb7185;
  --success: #34d399;
  --shadow: 0 22px 50px rgba(2, 8, 23, 0.48);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f3f7ff;
  --bg-elev: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.78);
  --footer-bg: #eaf0ff;
  --panel: rgba(255, 255, 255, 0.92);
  --panel-soft: rgba(226, 232, 240, 0.72);
  --line: rgba(71, 85, 105, 0.2);
  --text: #0f172a;
  --muted: #475569;
  --accent: #0ea5e9;
  --accent-2: #7c3aed;
  --accent-warm: #d97706;
  --danger: #e11d48;
  --success: #059669;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
  background:
    radial-gradient(circle at 12% -8%, rgba(110, 231, 255, 0.24), transparent 40%),
    radial-gradient(circle at 85% 4%, rgba(139, 92, 246, 0.2), transparent 30%),
    linear-gradient(160deg, var(--bg), var(--bg-elev));
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2.4rem);
  background: var(--header-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; font-weight: 800; letter-spacing: .02em; }
.brand-mark {
  width: 2.3rem; height: 2.3rem; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(140deg, var(--accent), var(--accent-2)); color: #06111a; font-size: .78rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.4), 0 6px 20px rgba(14,165,233,.35);
}

.header-actions, .main-nav, .site-footer nav { display: flex; align-items: center; gap: .8rem; }
.header-actions { flex-wrap: wrap; }
.main-nav a, .site-footer a {
  color: var(--muted); font-weight: 700; font-size: .94rem; padding: .45rem .65rem; border-radius: 10px;
}
.main-nav a:hover, .site-footer a:hover { color: var(--text); background: var(--panel-soft); }

.search-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.search-input {
  width: min(32vw, 22rem); min-width: 12rem;
  border: 1px solid var(--line); border-radius: 999px; padding: .74rem .95rem;
  background: var(--panel); color: var(--text);
}
.search-input:focus {
  outline: none; border-color: color-mix(in srgb, var(--accent) 64%, white 10%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 24%, transparent);
}

main { width: min(1200px, calc(100% - 2rem)); margin: 0 auto; padding: .8rem 0 4rem; }

.hero {
  margin-top: .8rem;
  padding: clamp(2rem, 7vw, 4.4rem);
  border: 1px solid var(--line); border-radius: 26px;
  background:
    linear-gradient(140deg, color-mix(in srgb, var(--accent-2) 22%, transparent), transparent 52%),
    linear-gradient(0deg, var(--panel), var(--panel));
  box-shadow: var(--shadow);
}
.hero h1 { margin: .2rem 0 .9rem; font-size: clamp(2rem, 6vw, 4.4rem); line-height: .96; max-width: 18ch; }
.hero-copy { margin: 0; max-width: 70ch; color: var(--muted); line-height: 1.65; font-size: 1.05rem; }
.eyebrow { margin: 0; text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; font-weight: 900; color: var(--accent); }

.section-block { padding-top: 2.2rem; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: .8rem; margin-bottom: .95rem; }
.section-heading h2 { margin: .2rem 0 0; font-size: clamp(1.35rem, 2.8vw, 2rem); }
.muted, .empty-state { color: var(--muted); }

.category-list { display: flex; flex-wrap: wrap; gap: .62rem; }
.category-chip, .text-button, .theme-toggle {
  border: 1px solid var(--line); border-radius: 999px; padding: .63rem .95rem;
  background: var(--panel); color: var(--text); cursor: pointer;
}
.category-chip:hover, .text-button:hover, .theme-toggle:hover { border-color: color-mix(in srgb, var(--accent) 48%, var(--line)); }
.category-chip.is-active { background: color-mix(in srgb, var(--accent) 18%, transparent); border-color: var(--accent); color: var(--accent); }

.game-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 1rem; }
.compact-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); }
.game-card {
  border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-soft) 60%, transparent), var(--panel));
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.game-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 35%, var(--line)); box-shadow: var(--shadow); }
.game-card img { display:block; width:100%; aspect-ratio: 4/3; object-fit: cover; background: var(--panel-soft); cursor: pointer; }
.game-card-body { padding: .95rem; display: grid; gap: .76rem; }
.game-title { margin: 0; min-height: 2.4rem; font-size: 1rem; }
.game-category { margin: -.35rem 0 0; color: var(--muted); font-size: .85rem; }
.card-actions { display: grid; grid-template-columns: 1fr auto; gap: .55rem; }

.primary-button, .favorite-button {
  border-radius: 12px; font-weight: 800; cursor: pointer;
}
.primary-button {
  border: 0; padding: .68rem .9rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06111a;
}
.favorite-button {
  border: 1px solid var(--line); min-width: 3rem; padding: .68rem;
  background: var(--panel-soft); color: var(--text);
}
.favorite-button.is-favorite { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 44%, var(--line)); }

.empty-state {
  display: none; margin: 1rem 0 0; padding: 1rem;
  border: 1px dashed var(--line); border-radius: 14px; background: var(--panel);
}
.empty-state.is-visible { display:block; }

.modal { position: fixed; inset: 0; display: none; z-index: 90; }
.modal.is-open { display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(2,8,23,.72); }
.modal-panel {
  position: relative; width: min(1100px, calc(100% - 1.6rem));
  border: 1px solid var(--line); border-radius: 20px;
  background: var(--panel); box-shadow: var(--shadow); overflow: hidden;
}
.modal-header, .modal-footer {
  display:flex; align-items:center; justify-content: space-between; gap: .6rem; padding: .85rem 1rem;
  border-bottom: 1px solid var(--line);
}
.modal-footer { border-bottom: 0; border-top: 1px solid var(--line); }
.icon-button { border: 1px solid var(--line); background: var(--panel-soft); color: var(--text); border-radius: 10px; width: 2.1rem; height: 2.1rem; cursor:pointer; }
#gameFrame { width: 100%; height: min(70vh, 750px); border: 0; display:block; background: #000; }

.site-footer {
  padding: 1.4rem clamp(1rem, 3vw, 2.4rem) 2rem;
  border-top: 1px solid var(--line); background: var(--footer-bg);
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .8rem;
}

.content-page {
  margin-top: 1rem; padding: clamp(1.2rem, 3vw, 2rem);
  border-radius: 20px; border: 1px solid var(--line); background: var(--panel); box-shadow: var(--shadow);
}
.content-page h2 { margin-top: 1.1rem; }
.content-page :is(p, li) { color: var(--muted); line-height: 1.68; }
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.contact-form { display: grid; gap: .75rem; }
.contact-form label { display: grid; gap: .32rem; font-weight: 650; }
.contact-form :is(input, select, textarea) {
  border: 1px solid var(--line); background: var(--panel-soft); color: var(--text);
  border-radius: 12px; padding: .72rem .82rem;
}

@media (max-width: 860px) {
  .header-actions { width: 100%; }
  .search-input { width: 100%; }
  .main-nav { flex-wrap: wrap; }
  .contact-layout { grid-template-columns: 1fr; }
}