*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0d0d14;--surface:#161625;--card:#1c1c32;--card-hover:#24243e;
  --border:#2a2a44;--primary:#d4a843;--primary-hover:#e8bc4a;
  --danger:#c0392b;--danger-hover:#e74c3c;
  --text:#e8e6e1;--dim:#7a7a8e;
  --board:#dcb35c;--board-line:#4a3a1e;--star:#5c4a2a;
  --radius:10px;--font:system-ui,-apple-system,sans-serif;
}
html,body{height:100%;font-family:var(--font);background:var(--bg);color:var(--text)}
body{display:flex;flex-direction:column}
a{color:var(--primary);text-decoration:none}

/* Header */
header{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:8px;font-size:1.25rem;font-weight:700;color:var(--text)}
.logo-stone{color:var(--primary);font-size:1.4rem}
.header-right{display:flex;align-items:center;gap:12px}
.room-badge{background:var(--card);padding:4px 12px;border-radius:20px;font-size:.8rem;color:var(--dim);border:1px solid var(--border)}
.lang-switch select{background:var(--card);color:var(--text);border:1px solid var(--border);padding:4px 28px 4px 10px;border-radius:6px;cursor:pointer;font-size:.8rem;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23888'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;transition:border-color .15s}
.lang-switch select:hover,.lang-switch select:focus{border-color:var(--primary);outline:none}

/* Views */
main{display:flex;flex-direction:column;align-items:center;padding:20px;flex:1}
.view{width:100%;max-width:900px}
#room-view{max-width:1280px}
.hero{text-align:center;margin-bottom:24px}
.hero h1{font-size:2.4rem;color:var(--primary)}
.subtitle{color:var(--dim);margin-top:4px}

/* Cards */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.create-card{max-width:480px;margin:0 auto}
.create-card h2{margin-bottom:16px;font-size:1.3rem}
.create-card label{display:block;margin:14px 0 6px;font-size:.9rem;color:var(--dim)}

/* Form */
.preset-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.preset{background:var(--surface);color:var(--dim);border:1px solid var(--border);padding:8px 16px;border-radius:8px;cursor:pointer;font-size:.9rem;transition:all .15s}
.preset:hover{border-color:var(--primary);color:var(--text)}
.preset.active{background:var(--primary);color:#111;border-color:var(--primary);font-weight:600}
.small-input{width:60px;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:8px;border-radius:8px;font-size:.9rem;text-align:center}
.form-row{display:flex;gap:12px}
.field{flex:1}
.field input,.field select{width:100%;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:8px;font-size:.95rem}
.field select{cursor:pointer}
.field input:focus,.field select:focus,.small-input:focus{outline:none;border-color:var(--primary)}

/* Sliders */
.slider-group{margin:14px 0 4px}
.slider-label{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:6px;font-size:.9rem;color:var(--dim)}
.slider-label strong{color:var(--primary);font-size:1.05rem;font-variant-numeric:tabular-nums}
.slider{-webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:3px;background:var(--surface);border:1px solid var(--border);outline:none;cursor:pointer}
.slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary);border:2px solid var(--bg);cursor:pointer;box-shadow:0 0 6px rgba(212,168,67,.4)}
.slider::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--primary);border:2px solid var(--bg);cursor:pointer}
.slider::-webkit-slider-thumb:hover{background:var(--primary-hover);box-shadow:0 0 10px rgba(212,168,67,.6)}
.slider-ticks{display:flex;justify-content:space-between;font-size:.7rem;color:var(--dim);margin-top:2px;padding:0 2px}

/* Buttons */
.btn-primary{display:block;width:100%;margin-top:20px;padding:14px;background:var(--primary);color:#111;border:none;border-radius:var(--radius);font-size:1.05rem;font-weight:700;cursor:pointer;transition:background .15s}
.btn-primary:hover{background:var(--primary-hover)}
.btn-secondary{padding:10px 20px;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:8px;cursor:pointer;font-size:.9rem;transition:all .15s}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{padding:10px 20px;background:transparent;color:var(--danger);border:1px solid var(--danger);border-radius:8px;cursor:pointer;font-size:.9rem;transition:all .15s}
.btn-danger:hover{background:var(--danger);color:#fff}
.btn-link{display:inline-block;margin-top:16px;color:var(--dim);font-size:.9rem}
.btn-link:hover{color:var(--primary)}

/* Waiting */
.waiting-card{max-width:480px;margin:0 auto;text-align:center}
.waiting-card h2{margin-bottom:8px}
.share-row{display:flex;gap:8px;margin-top:16px}
.share-row input{flex:1;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:10px;border-radius:8px;font-size:.85rem}
.share-row button{padding:10px 18px;background:var(--primary);color:#111;border:none;border-radius:8px;cursor:pointer;font-weight:600;font-size:.85rem;white-space:nowrap}
#seat-picker{margin-top:20px;text-align:center}
#seat-picker h3{margin-bottom:10px;font-size:1rem}
#seat-buttons{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.seat-btn{padding:12px 20px;border-radius:8px;border:2px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:.9rem;transition:all .15s;min-width:100px}
.seat-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}
.seat-btn:disabled{opacity:.4;cursor:default}
.seat-btn.mine{border-color:var(--primary);background:rgba(212,168,67,.15);color:var(--primary)}
#seat-status{margin-top:12px;color:var(--dim);font-size:.85rem}
.rules-hint{margin-top:8px;font-size:.8rem;line-height:1.55}
.dim{color:var(--dim)}

/* Rule showcase (waiting + in-game) */
.rule-showcase{
  margin-top:16px;padding:14px 16px;border-radius:var(--radius);
  background:linear-gradient(165deg,rgba(255,255,255,.04),var(--surface));
  border:1px solid var(--border);
  box-shadow:0 2px 14px rgba(0,0,0,.22);
  max-width:420px;margin-left:auto;margin-right:auto;
}
.rule-showcase--game{
  margin-top:0;margin-bottom:12px;max-width:560px;
}
.rule-showcase-inner{
  display:flex;flex-direction:column;align-items:center;gap:10px;
}
.rule-showcase-inner--inline{
  flex-direction:row;flex-wrap:wrap;justify-content:center;gap:10px 16px;
}
.rule-showcase-tag{
  font-size:.72rem;font-weight:700;letter-spacing:.04em;color:var(--dim);
}
.rule-showcase-hint{
  font-size:.76rem;line-height:1.45;text-align:center;max-width:28rem;margin:10px 0 0;width:100%;
}
.rule-showcase--game .rule-showcase-hint{margin-top:8px}
.rule-badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:7rem;padding:10px 22px;border-radius:10px;
  font-size:1.02rem;font-weight:800;letter-spacing:.03em;
  border:2px solid var(--border);color:var(--text);background:var(--card);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.rule-badge--pure{
  border-color:#4a9070;color:#b8e8d4;background:rgba(74,144,112,.18);
}
.rule-badge--japanese{
  border-color:var(--primary);color:var(--primary);background:rgba(212,168,67,.14);
}
.rule-badge--chinese{
  border-color:#c45c6a;color:#f0b0b8;background:rgba(196,92,106,.16);
}

/* Game Layout */
.game-layout{display:flex;align-items:flex-start;justify-content:center;gap:16px;width:100%}
.team-column{display:flex;flex-direction:column;align-items:stretch;gap:8px;min-width:100px}
.seat-cards{display:flex;flex-direction:column;gap:6px}
.seat-cards:empty{display:none}
.seat-card{display:flex;align-items:center;justify-content:space-between;padding:6px 10px;border-radius:6px;background:var(--surface);border:1px solid var(--border);font-size:.78rem;transition:all .15s;gap:6px}
.seat-card.active-seat{border-color:var(--primary);box-shadow:0 0 8px rgba(212,168,67,.25)}
.seat-card.my-seat{background:rgba(212,168,67,.1)}
.seat-card-name{font-weight:600;white-space:nowrap}
.player-panel{display:flex;flex-direction:column;align-items:center;gap:8px;min-width:100px;padding:12px;border-radius:var(--radius);background:var(--card);border:1px solid var(--border)}
.player-panel.active-turn{border-color:var(--primary);box-shadow:0 0 12px rgba(212,168,67,.2)}
.player-panel.my-panel{background:linear-gradient(135deg,rgba(212,168,67,.08),var(--card) 70%)}
.player-panel.my-panel .player-name{color:var(--primary)}
.panel-top{display:flex;align-items:center;gap:6px}
.you-badge{font-size:.6rem;font-weight:700;letter-spacing:.05em;padding:2px 8px;border-radius:10px;background:var(--primary);color:#111;text-transform:uppercase;line-height:1.4}
.inc-badge{font-size:.72rem;color:var(--dim);font-family:'Courier New',monospace;margin-top:2px}
.player-color{font-size:1.8rem;line-height:1}
.black-indicator{color:#333;text-shadow:0 0 2px rgba(255,255,255,.3)}
.white-indicator{color:#f0f0f0;text-shadow:0 0 4px rgba(0,0,0,.6),0 0 1px rgba(0,0,0,.8)}
.player-name{font-weight:600;font-size:.85rem}
.player-score{font-size:1.6rem;font-weight:700;color:var(--primary)}
.score-label{font-size:.75rem;color:var(--dim)}
.prisoners-info{display:flex;align-items:center;gap:6px;padding:4px 10px;background:var(--surface);border-radius:6px;font-size:.8rem}
.prisoners-label{color:var(--dim);font-size:.72rem}
.prisoners-count{font-weight:700;font-variant-numeric:tabular-nums;color:var(--text);font-size:.95rem}
.prisoners-help-btn{width:16px;height:16px;border-radius:50%;border:1px solid var(--dim);background:transparent;color:var(--dim);font-size:.6rem;font-weight:700;cursor:pointer;line-height:1;padding:0;flex-shrink:0;transition:all .15s;display:flex;align-items:center;justify-content:center}
.prisoners-help-btn:hover{border-color:var(--primary);color:var(--primary)}
.prisoners-popover{position:absolute;z-index:200;width:240px;background:var(--card);border:1px solid var(--primary);border-radius:var(--radius);padding:12px 14px;font-size:.82rem;line-height:1.55;color:var(--text);box-shadow:0 4px 20px rgba(0,0,0,.5);animation:fadeup .2s}
.timer{font-family:'Courier New',monospace;font-size:1.3rem;font-weight:700;padding:6px 12px;background:var(--surface);border-radius:6px;min-width:80px;text-align:center}
.timer.low-time{color:var(--danger);animation:pulse 1s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* Board */
.board-wrap{position:relative;flex-shrink:0}
#board-canvas{display:block;border-radius:4px;cursor:pointer}
#turn-indicator{text-align:center;font-size:.9rem;font-weight:600;color:var(--primary);padding:10px 0 2px;min-height:1.6em}

/* Controls */
.controls{display:flex;align-items:center;gap:12px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.controls button:disabled{opacity:.35;cursor:default}
.move-info{color:var(--dim);font-size:.85rem}
.end-hint{text-align:center;color:var(--dim);font-size:.78rem;margin-top:8px;opacity:.7}

/* Result */
.result-card{max-width:420px;margin:20px auto 0;text-align:center}
.result-card h2{font-size:1.6rem;margin-bottom:8px;color:var(--primary)}
.result-card p{color:var(--dim);margin-bottom:16px}
.result-scores{display:flex;justify-content:center;gap:24px;margin-bottom:20px}
.rs{font-size:1.1rem}
.rs strong{font-size:1.3rem;color:var(--primary)}
.result-actions{display:flex;gap:8px;justify-content:center}

/* Responsive */
@media(max-width:700px){
  .game-layout{flex-direction:column;align-items:center}
  .team-column{width:100%;max-width:400px}
  .game-layout .player-panel{flex-direction:row;width:100%;justify-content:space-between}
  .game-layout .player-panel .panel-top .player-color{font-size:1.4rem}
  .game-layout .player-panel .player-info{display:flex;align-items:center;gap:6px}
  .game-layout .player-panel .player-score{font-size:1.2rem}
  .seat-cards{flex-direction:row}
  .seat-card{flex:1;justify-content:center}
  .game-layout .board-wrap{order:1}
  .game-layout #team-black{order:0}
  .game-layout #team-white{order:2}
  .hero h1{font-size:1.8rem}
  .create-card{padding:16px}
  .form-row{flex-direction:column;gap:0}
}

/* Toast */
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--card);border:1px solid var(--border);padding:10px 24px;border-radius:8px;font-size:.9rem;z-index:100;animation:fadeup .3s;display:flex;align-items:center;gap:10px;white-space:nowrap}
.toast-danger{border-color:var(--danger);color:var(--danger);bottom:64px}
.toast-action{border-color:var(--primary)}
.toast-action .toast-btn{padding:4px 14px;background:var(--primary);color:#111;border:none;border-radius:6px;font-size:.82rem;font-weight:700;cursor:pointer;white-space:nowrap}
.toast-action .toast-btn:hover{background:var(--primary-hover)}

/* Scoring */
.scoring-btn-row{display:flex;gap:10px;justify-content:center;margin:14px 0 16px}
.scoring-detail{text-align:center;margin-top:12px;padding:12px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius)}
.scoring-line{font-size:.9rem;margin:4px 0;color:var(--text);font-variant-numeric:tabular-nums}
.scoring-confirm-row{display:flex;gap:10px;justify-content:center;margin:12px 0 8px}
.scoring-confirm-card{display:flex;align-items:center;gap:8px;padding:10px 18px;border-radius:8px;border:2px solid var(--border);background:var(--surface);min-width:130px;justify-content:center;transition:all .25s}
.scoring-confirm-card.confirmed{border-color:var(--primary);background:rgba(212,168,67,.12)}
.scoring-confirm-card.waiting{opacity:.55}
.sc-label{font-size:.85rem;font-weight:600}
.sc-icon{font-size:1rem;min-width:1.2em;text-align:center}
.scoring-confirm-hint{text-align:center;font-size:.8rem;color:var(--dim);margin:6px 0 10px}
.result-breakdown{margin-bottom:16px;padding:10px 14px;background:var(--surface);border-radius:8px;border:1px solid var(--border)}
#scoring-controls{text-align:center}
#scoring-controls .btn-primary{min-width:200px;padding:12px 28px}

/* Review */
.review-controls{margin-top:16px;padding:14px 16px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);max-width:560px;margin-left:auto;margin-right:auto;text-align:center}
.review-title{font-size:.78rem;font-weight:700;letter-spacing:.05em;color:var(--dim);text-transform:uppercase;margin-bottom:10px}
.review-bar{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}
.review-btn{background:var(--surface);border:1px solid var(--border);color:var(--text);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:1rem;line-height:1;min-width:44px;transition:all .15s}
.review-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}
.review-btn:disabled{opacity:.3;cursor:default}
.review-move-info{font-family:'Courier New',monospace;font-size:.95rem;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;min-width:4.5em;padding:0 6px}
.review-move-detail{font-size:.78rem;margin-top:8px;min-height:1em;font-variant-numeric:tabular-nums}
.review-hint{font-size:.72rem;margin-top:6px;line-height:1.45}

/* Board Editor */
.editor-row{display:flex;align-items:center;gap:10px;margin:14px 0 4px;flex-wrap:wrap}
.btn-edit-board{font-size:.85rem;padding:8px 16px;display:inline-flex;align-items:center;gap:6px}
.icon-brick{flex-shrink:0}
.custom-board-badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:12px;font-size:.72rem;font-weight:700;background:rgba(212,168,67,.18);color:var(--primary);border:1px solid rgba(212,168,67,.35);letter-spacing:.03em}
.btn-reset-link{font-size:.78rem;margin:0;padding:0}

.modal-overlay{position:fixed;inset:0;z-index:500;background:rgba(0,0,0,.65);display:flex;align-items:center;justify-content:center;padding:16px;animation:fadein .2s}
@keyframes fadein{from{opacity:0}to{opacity:1}}
.modal-content{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;max-width:540px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 8px 40px rgba(0,0,0,.5)}
.editor-modal h3{font-size:1.15rem;margin-bottom:4px}
.editor-hint{font-size:.8rem;margin-bottom:12px}
.editor-toolbar{display:flex;align-items:center;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.editor-count{margin-left:auto;font-size:.85rem;color:var(--dim);font-variant-numeric:tabular-nums}
.editor-count span:first-child{color:var(--primary);font-weight:700;font-size:1rem}
.editor-canvas-wrap{display:flex;justify-content:center;margin-bottom:14px}
#editor-canvas{display:block;border-radius:4px;cursor:crosshair;touch-action:none}
.editor-template-row{display:flex;gap:8px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.editor-save-group{display:flex;gap:6px;align-items:center;flex:1;min-width:0}
.template-name-input{flex:1;min-width:80px;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:8px 10px;border-radius:8px;font-size:.85rem}
.template-name-input:focus{outline:none;border-color:var(--primary)}
.editor-actions{display:flex;gap:8px;justify-content:flex-end}
.btn-sm{padding:8px 18px;font-size:.88rem}
.editor-actions .btn-primary{min-width:100px}

/* Waiting Board Preview */
.waiting-board-preview{display:flex;flex-direction:column;align-items:center;gap:8px;margin:16px 0}
.waiting-board-preview canvas{border-radius:6px;box-shadow:0 2px 10px rgba(0,0,0,.3)}
.waiting-board-info{font-size:.88rem;color:var(--dim);text-align:center}
.waiting-board-info .custom-board-badge{display:inline-block;background:var(--primary);color:#fff;font-size:.72rem;font-weight:700;padding:2px 7px;border-radius:4px;margin-left:6px;vertical-align:middle}

/* Template Gallery */
.gallery-modal{max-width:680px}
.gallery-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.gallery-header h3{font-size:1.15rem;margin:0}
.gallery-close-btn{background:none;border:none;color:var(--dim);font-size:1.6rem;cursor:pointer;padding:0 4px;line-height:1;transition:color .15s}
.gallery-close-btn:hover{color:var(--text)}
.gallery-controls{display:flex;gap:10px;align-items:center;margin-bottom:14px;flex-wrap:wrap}
.gallery-search-input{flex:1;min-width:140px;background:var(--surface);border:1px solid var(--border);color:var(--text);padding:9px 12px;border-radius:8px;font-size:.88rem}
.gallery-search-input:focus{outline:none;border-color:var(--primary)}
.gallery-size-filter{display:flex;align-items:center;gap:6px;font-size:.8rem;white-space:nowrap}
.gallery-size-filter input[type="checkbox"]{accent-color:var(--primary);cursor:pointer}
.gallery-size-toggle{cursor:pointer}
.gallery-size-label{display:none}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;min-height:60px}
.template-card{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:10px;cursor:pointer;transition:all .15s;display:flex;flex-direction:column;align-items:center;gap:6px}
.template-card:hover{border-color:var(--primary);background:var(--card-hover);transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.25)}
.template-card canvas{display:block;border-radius:3px;pointer-events:none}
.template-card-info{text-align:center;width:100%;overflow:hidden}
.template-card-name{display:block;font-weight:600;font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.template-card-meta{display:block;font-size:.7rem;color:var(--dim);margin-top:1px}
.gallery-empty{text-align:center;padding:30px 10px}
.gallery-pagination{display:flex;justify-content:center;align-items:center;gap:12px;margin-top:14px}
.gallery-page-info{font-size:.85rem;color:var(--dim);font-variant-numeric:tabular-nums;min-width:8em;text-align:center}
@media(max-width:500px){
  .gallery-grid{grid-template-columns:repeat(auto-fill,minmax(110px,1fr));gap:8px}
}

/* Footer */
.site-footer{text-align:center;padding:18px 16px;font-size:.78rem;color:var(--dim);border-top:1px solid var(--border);margin-top:auto}
.site-footer a{color:var(--dim);text-decoration:none;transition:color .15s}
.site-footer a:hover{color:var(--primary)}

/* Utilities */
[hidden]{display:none!important}
.hidden{display:none!important}
@keyframes fadeup{from{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}