/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --board-bg: #E8C97A;
  --board-line: #5D3A1A;
  --board-river: #8B5A2B;
  --cho-bg: #D4502B;
  --cho-fg: #FFF5E0;
  --han-bg: #1A5276;
  --han-fg: #E8F4FD;
  --selected: rgba(255,230,0,0.55);
  --valid-move: rgba(0,180,80,0.45);
  --last-move: rgba(80,160,255,0.30);
  --accent: #C0392B;
  --bg: #1a1a2e;
  --surface: #16213e;
  --surface2: #0f3460;
  --text: #e0e0e0;
  --text-muted: #9E9E9E;
  --border: rgba(255,255,255,0.1);
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
}

html, body { height: 100%; font-family: 'Noto Sans KR', sans-serif; background: var(--bg); color: var(--text); }

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* ── Header ───────────────────────────────────────────────────────────────── */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); padding: 16px 24px; }
.header-inner { max-width: 1000px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; }
.site-title { display: flex; flex-direction: column; }
.title-ko { font-family: 'Noto Serif KR', serif; font-size: 1.5rem; color: #F0C040; }
.title-sub { font-size: 0.75rem; color: var(--text-muted); }
.session-status { font-size: 0.8rem; color: var(--text-muted); background: var(--surface2); padding: 4px 12px; border-radius: 20px; }
.session-status.status-full { color: #e74c3c; border: 1px solid #e74c3c; }

/* ── Hub page ─────────────────────────────────────────────────────────────── */
.hub-main { max-width: 1000px; margin: 0 auto; padding: 32px 20px; }
.section-title { font-family: 'Noto Serif KR', serif; font-size: 1.2rem; color: #F0C040; margin-bottom: 20px; border-left: 3px solid #F0C040; padding-left: 10px; }

.mode-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-bottom: 40px; }
.mode-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px 24px; display: flex; flex-direction: column; gap: 8px;
  transition: transform .2s, border-color .2s; position: relative;
}
.mode-card:hover { transform: translateY(-3px); border-color: #F0C040; }
.mode-card.featured { border-color: #F0C040; background: linear-gradient(135deg, var(--surface), var(--surface2)); }
.mode-card.disabled { opacity: 0.5; pointer-events: none; }
.mode-icon { font-size: 2.5rem; }
.mode-card h3 { font-size: 1.1rem; font-weight: 700; }
.mode-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }
.mode-badge { position: absolute; top: 12px; right: 12px; background: #F0C040; color: #1a1a2e; font-size: 0.7rem; font-weight: 700; padding: 2px 8px; border-radius: 10px; }
.online-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }
.room-list { margin-top: 12px; display: flex; flex-direction: column; gap: 6px; }
.room-item { display: flex; align-items: center; justify-content: space-between; background: var(--bg); border-radius: 6px; padding: 6px 10px; font-size: 0.85rem; }
.btn-join { background: #27ae60; color: white; border: none; padding: 4px 12px; border-radius: 6px; font-size: 0.8rem; }
.no-rooms { font-size: 0.8rem; color: var(--text-muted); }

.setup-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; margin-bottom: 24px; }
.setup-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.setup-card h4 { font-size: 0.9rem; color: #F0C040; margin-bottom: 12px; }
.variant-list, .masang-list { display: flex; flex-direction: column; gap: 8px; }
.variant-item, .masang-item { display: flex; align-items: flex-start; gap: 8px; font-size: 0.85rem; cursor: pointer; }
.variant-item input, .masang-item input { margin-top: 2px; accent-color: #F0C040; }
.masang-label em { color: var(--text-muted); font-size: 0.8rem; }

.quick-start-row { text-align: center; }
.rules-section { margin-top: 40px; }
.rules-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.rule-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; }
.rule-card h4 { font-size: 0.9rem; color: #F0C040; margin-bottom: 12px; }
.rule-card ul { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.rule-card li { font-size: 0.85rem; color: var(--text-muted); }
.rule-card li strong { color: var(--text); }
.rules-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.rules-table th, .rules-table td { border: 1px solid var(--border); padding: 6px 10px; text-align: center; }
.rules-table th { background: var(--surface2); color: #F0C040; }
.rule-note { margin-top: 8px; font-size: 0.75rem; color: var(--text-muted); }

.site-footer { text-align: center; padding: 20px; font-size: 0.75rem; color: var(--text-muted); border-top: 1px solid var(--border); }
.site-footer a { color: #F0C040; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn-primary { background: #C0392B; color: white; border: none; padding: 10px 20px; border-radius: 8px; font-size: 0.9rem; font-weight: 500; transition: background .2s; }
.btn-primary:hover { background: #a93226; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); padding: 10px 20px; border-radius: 8px; font-size: 0.9rem; transition: border-color .2s; }
.btn-secondary:hover { border-color: #F0C040; }
.btn-large { padding: 14px 36px; font-size: 1rem; }
.btn-danger { background: #e74c3c; color: white; border: none; padding: 8px 16px; border-radius: 8px; }
.btn-toggle { background: var(--surface2); color: var(--text); border: 1px solid var(--border); padding: 8px 14px; border-radius: 6px; font-size: 0.85rem; transition: all .15s; }
.btn-toggle.active { background: #C0392B; border-color: #C0392B; color: white; }
.btn-toggle:hover:not(.active) { border-color: #F0C040; }
.btn-group { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Modal ────────────────────────────────────────────────────────────────── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.75); display: flex; align-items: flex-start; justify-content: center; z-index: 200; backdrop-filter: blur(4px); overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 24px 0; }
.modal-overlay.hidden { display: none; }
.modal-box { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 32px; max-width: 480px; width: 90%; box-shadow: var(--shadow); margin: auto 0; flex-shrink: 0; }
.modal-box h3 { font-family: 'Noto Serif KR', serif; color: #F0C040; margin-bottom: 20px; font-size: 1.2rem; }
.modal-box p { color: var(--text-muted); margin-bottom: 10px; font-size: 0.9rem; }
.modal-box p strong { color: var(--text); }
.modal-box label { display: flex; flex-direction: column; gap: 4px; margin-bottom: 14px; font-size: 0.85rem; color: var(--text-muted); }
.modal-box input[type=text], .modal-box select { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 6px; font-size: 0.9rem; font-family: inherit; }
.modal-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }

/* ── Setup modal ──────────────────────────────────────────────────────────── */
.setup-box { max-width: 540px; }
.setup-row { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.setup-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.setup-row select { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 6px; font-size: 0.9rem; font-family: inherit; }
.difficulty-row { display: flex; align-items: center; gap: 12px; }
.difficulty-row input[type=range] { flex: 1; accent-color: #C0392B; }
.difficulty-label { min-width: 48px; font-size: 0.9rem; color: var(--text); }

/* ── Game page ────────────────────────────────────────────────────────────── */
.game-page { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
.game-layout { flex: 1; display: flex; flex-direction: column; align-items: center; padding: 8px 12px; gap: 6px; overflow-y: auto; }

.player-bar { display: flex; align-items: center; gap: 10px; width: 100%; max-width: 560px; padding: 6px 12px; border-radius: 8px; }
.player-bar.player-han { background: rgba(26,82,118,0.3); border: 1px solid rgba(26,82,118,0.5); }
.player-bar.player-cho { background: rgba(192,57,43,0.2); border: 1px solid rgba(192,57,43,0.4); }
.player-name { font-weight: 700; font-size: 0.95rem; flex: 1; }
.player-score { font-size: 0.85rem; color: #F0C040; }
.turn-indicator { width: 10px; height: 10px; border-radius: 50%; background: transparent; transition: background .3s; }
.turn-indicator.active { background: #F0C040; box-shadow: 0 0 6px #F0C040; }

.win-prob-container { display: flex; align-items: center; gap: 8px; width: 100%; max-width: 560px; }
.prob-label { font-size: 0.78rem; color: var(--text-muted); white-space: nowrap; min-width: 50px; }
#han-prob-label { text-align: left; }
#cho-prob-label { text-align: right; }
.win-prob-bar { flex: 1; height: 10px; border-radius: 5px; overflow: hidden; display: flex; background: var(--surface2); }
.prob-han { background: #1A5276; transition: width .5s ease; }
.prob-cho { background: #C0392B; transition: width .5s ease; }

.board-container { position: relative; }
#janggi-canvas { display: block; touch-action: none; }

/* ── Go (게임 시작) 버튼 ──────────────────────────────────────────────────── */
.go-btn-wrap { width: 100%; max-width: 560px; display: flex; justify-content: center; padding: 8px 0; }
.go-btn-wrap.hidden { display: none; }
.btn-go-pulse { animation: goPulse 1.6s ease-in-out infinite; font-size: 1.1rem; padding: 14px 48px; }
@keyframes goPulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(240,192,64,0.5); } 50% { box-shadow: 0 0 0 12px rgba(240,192,64,0); } }

.control-bar { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; width: 100%; max-width: 560px; }
.ctrl-btn { background: var(--surface); border: 1px solid var(--border); color: var(--text); padding: 8px 14px; border-radius: 8px; font-size: 0.82rem; transition: all .15s; }
.ctrl-btn:hover { border-color: #F0C040; background: var(--surface2); }
.btn-danger-soft { border-color: rgba(231,76,60,0.4); }
.btn-danger-soft:hover { border-color: #e74c3c; background: rgba(231,76,60,0.15); }

.advanced-panel { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.advanced-panel.hidden { display: none; }
.adv-btn { background: var(--surface2); border: 1px solid var(--border); color: var(--text); padding: 6px 12px; border-radius: 6px; font-size: 0.82rem; }
.adv-btn:hover { border-color: #F0C040; }

.hints-panel { width: 100%; max-width: 560px; display: flex; flex-direction: column; gap: 4px; min-height: 24px; }
.hint-row { display: flex; align-items: center; gap: 10px; background: var(--surface); border-radius: 6px; padding: 5px 12px; font-size: 0.82rem; }
.hint-row.hidden { display: none; }
.hint-num { background: #F0C040; color: var(--bg); width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; flex-shrink: 0; }
.hint-move { flex: 1; font-family: monospace; }
.hint-eval { font-size: 0.78rem; color: var(--text-muted); }

.status-bar { width: 100%; max-width: 560px; text-align: center; font-size: 0.85rem; color: var(--text-muted); padding: 4px; min-height: 22px; }
.status-bar.check { color: #e74c3c; font-weight: 700; }
.status-bar.your-turn { color: #F0C040; }

/* ── Placement toolbar ────────────────────────────────────────────────────── */
.placement-toolbar { position: fixed; top: 0; left: 0; right: 0; background: #2c1810; border-bottom: 2px solid #C0392B; padding: 8px 16px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; z-index: 100; }
.placement-toolbar.hidden { display: none; }
.toolbar-label { font-size: 0.85rem; font-weight: 700; color: #F0C040; }
.piece-palette { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.palette-piece { width: 36px; height: 36px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; font-size: 0.75rem; display: flex; align-items: center; justify-content: center; font-family: 'Noto Serif KR', serif; transition: border-color .15s; }
.palette-piece:hover, .palette-piece.selected { border-color: #F0C040; }

/* ── Gameover modal ───────────────────────────────────────────────────────── */
#gameover-title { font-size: 1.5rem; }

/* ── Scrollbar ────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 3px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .ctrl-btn { padding: 6px 10px; font-size: 0.75rem; }
  .player-bar { padding: 4px 8px; }
  .hub-main { padding: 20px 12px; }
  .mode-grid { grid-template-columns: 1fr; }
}