/* ── Omok (Gomoku) Styles ── */
/* Dark-mode compatible, matches platform.css variables */

:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: #16213e;
  --text-primary: #e8e8e8;
  --text-secondary: #b0b0b0;
  --text-muted: #666;
  --accent-gold: #F0C040;
  --accent-green: #4CAF50;
  --accent-red: #F44336;
  --border-subtle: rgba(255,255,255,0.08);
  --shadow-card: 0 4px 16px rgba(0,0,0,0.3);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Hub page (index) ─────────────────────────────── */
body.hub-page {
  min-height: 100vh;
}

/* ── Topbar ────────────────────────────────────────── */
.game-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topbar-logo {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.topbar-back {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
}
.topbar-back:hover { color: var(--accent-gold); }

/* ── Language selector ─────────────────────────────── */
.lang-selector { position: relative; }
.lang-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 4px;
}
.lang-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 4px 0;
  width: 140px;
  max-height: 300px;
  overflow-x: hidden;
  overflow-y: auto;
  z-index: 200;
  box-shadow: var(--shadow-card);
}
.lang-dropdown.open { display: block; }
.lang-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 6px 14px;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.82rem;
  box-sizing: border-box;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.lang-option:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }

/* ── Header ────────────────────────────────────────── */
.site-header {
  text-align: center;
  padding: 32px 16px 16px;
}
.site-title {
  font-size: 1.8rem;
  margin: 0;
}
.title-ko {
  display: block;
  font-size: 2rem;
  color: var(--accent-gold);
  font-family: serif;
  letter-spacing: 4px;
}
.title-sub {
  display: block;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ── Mode/Section cards ────────────────────────────── */
.hub-main {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 16px 32px;
}
.section-title {
  font-size: 1.1rem;
  color: var(--accent-gold);
  margin: 24px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}
.mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.1s;
  cursor: pointer;
  display: block;
  position: relative;
}
.mode-card:hover {
  border-color: var(--accent-gold);
  box-shadow: 0 0 16px rgba(240,192,64,0.15);
  transform: translateY(-2px);
}
.mode-card.featured { border-color: rgba(240,192,64,0.3); }
.mode-icon { font-size: 2rem; margin-bottom: 8px; }
.mode-card h3 { margin: 0 0 6px; font-size: 1rem; }
.mode-card p { margin: 0; font-size: 0.82rem; color: var(--text-secondary); }
.mode-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--accent-gold);
  color: #111;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

/* ── Setup cards ───────────────────────────────────── */
.setup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}
.setup-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 16px;
}
.setup-card h4 {
  margin: 0 0 10px;
  font-size: 0.9rem;
  color: var(--accent-gold);
}
.variant-list, .rule-list { display: flex; flex-direction: column; gap: 6px; }
.variant-item, .rule-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  cursor: pointer;
}
.variant-item input, .rule-item input { accent-color: var(--accent-gold); }

.quick-start-row {
  text-align: center;
  margin-top: 16px;
}

/* ── Rules section ─────────────────────────────────── */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}
.rule-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 16px;
}
.rule-card h4 { color: var(--accent-gold); margin: 0 0 10px; font-size: 0.9rem; }
.rule-card ul { margin: 0; padding-left: 18px; font-size: 0.82rem; line-height: 1.8; }
.rules-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}
.rules-table th, .rules-table td {
  padding: 6px 10px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: center;
}
.rules-table th { color: var(--accent-gold); }
.rule-note { font-size: 0.75rem; color: var(--text-muted); margin-top: 8px; }

/* ── Footer ────────────────────────────────────────── */
.site-footer {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 0.78rem;
  border-top: 1px solid var(--border-subtle);
}
.site-footer a { color: var(--accent-gold); }

/* ── Ads ───────────────────────────────────────────── */
.ad-wrap {
  max-width: 728px;
  margin: 20px auto;
}

/* ── Game page ─────────────────────────────────────── */
body.game-page {
  height: 100svh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
body.game-page .game-topbar { flex-shrink: 0; }

.game-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Player bars */
.player-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  width: 100%;
  max-width: 480px;
}
.player-black { background: rgba(50,50,50,0.6); color: #e8e8e8; transition: all 0.3s; }
.player-white { background: rgba(200,200,200,0.15); color: #e8e8e8; transition: all 0.3s; }
.player-name { font-size: 0.85rem; }

/* Active turn indicator — glow + pulse */
.player-bar.active-turn {
  box-shadow: 0 0 12px rgba(240, 192, 64, 0.5), inset 0 0 8px rgba(240, 192, 64, 0.1);
  border: 1px solid var(--accent-gold);
  animation: turnPulse 1.5s ease-in-out infinite;
}
.player-black.active-turn {
  background: rgba(50,50,50,0.85);
  color: var(--accent-gold);
}
.player-white.active-turn {
  background: rgba(200,200,200,0.3);
  color: var(--accent-gold);
}
@keyframes turnPulse {
  0%, 100% { box-shadow: 0 0 8px rgba(240, 192, 64, 0.3), inset 0 0 6px rgba(240, 192, 64, 0.05); }
  50% { box-shadow: 0 0 18px rgba(240, 192, 64, 0.6), inset 0 0 10px rgba(240, 192, 64, 0.15); }
}

/* Win probability bar */
.win-prob-container {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  max-width: 480px;
  margin: 4px 0;
}
.win-prob-bar {
  flex: 1;
  display: flex;
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
  background: rgba(255,255,255,0.1);
}
.prob-black { background: #333; transition: width 0.3s; }
.prob-white { background: #ccc; transition: width 0.3s; }
.prob-label { font-size: 0.65rem; color: var(--text-muted); white-space: nowrap; min-width: 55px; }
#white-prob-label { text-align: right; }

/* Board container */
.board-container {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px 0;
}
#omok-canvas {
  display: block;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.4);
  cursor: pointer;
}

/* Control buttons */
.control-section {
  width: 100%;
  max-width: 480px;
  margin-top: 8px;
}
.control-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 4px;
  justify-content: center;
}
.ctrl-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
  white-space: nowrap;
}
.ctrl-btn:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }
.ctrl-btn.active { background: rgba(76,175,80,0.2); color: var(--accent-green); border-color: var(--accent-green); }
.btn-danger-soft { color: var(--accent-red); }
.btn-danger-soft:hover { background: rgba(244,67,54,0.1); }

/* Status bar */
.status-bar {
  width: 100%;
  max-width: 480px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 6px;
  background: var(--bg-card);
  border-radius: 6px;
  margin-top: 8px;
}

/* ── Modals ─────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  padding: 16px;
}
.modal-overlay.hidden { display: none; }
.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-box h3 {
  margin: 0 0 16px;
  font-size: 1.1rem;
  color: var(--accent-gold);
}
.setup-row {
  margin-bottom: 14px;
}
.setup-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.btn-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-toggle.active {
  background: rgba(240,192,64,0.15);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}
.btn-toggle:hover { border-color: var(--accent-gold); }

.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.btn-large {
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 600;
}
.btn-primary {
  background: var(--accent-gold);
  color: #111;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  border-radius: 8px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.85rem;
  text-decoration: none;
}
.btn-secondary:hover { border-color: var(--text-secondary); color: var(--text-primary); }

select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
}

/* Difficulty slider */
.difficulty-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.difficulty-row input[type="range"] {
  flex: 1;
  accent-color: var(--accent-gold);
}
.difficulty-label {
  min-width: 24px;
  text-align: center;
  font-weight: 700;
  color: var(--accent-gold);
}
.difficulty-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ── Responsive ────────────────────────────────────── */
@media (max-width: 480px) {
  .site-title { font-size: 1.4rem; }
  .title-ko { font-size: 1.6rem; }
  .mode-grid { grid-template-columns: 1fr; }
  .setup-grid { grid-template-columns: 1fr; }
  .rules-grid { grid-template-columns: 1fr; }
  .ctrl-btn { font-size: 0.7rem; padding: 5px 8px; }
  .board-container { max-width: 100vw; }
  .hub-main { padding: 0 8px 24px; }
}