*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #1a1a2e;--bg2: #16213e;--bg3: #0f3460;--accent: #e94560;--accent2: #0d7cff;--text: #e0e0e0;--text-dim: #888;--panel-bg: rgba(22, 33, 62, .92);--border: rgba(255,255,255,.08);--radius: 8px;--panel-w: 200px}html,body{height:100%;font-family:Segoe UI,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}.screen{position:fixed;inset:0;display:flex;flex-direction:column}.hidden{display:none!important}.btn{display:inline-flex;align-items:center;justify-content:center;gap:4px;padding:10px 20px;border:none;border-radius:var(--radius);font-size:.95rem;font-weight:600;cursor:pointer;transition:all .15s}.btn:hover{filter:brightness(1.2)}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent2);color:#fff}.btn-secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border)}.btn-danger{background:#c0392b;color:#fff}.btn-ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border)}.btn-panel{background:var(--bg3);color:var(--text);width:100%;margin-bottom:4px}.btn-panel.active{background:var(--accent2)}.btn-large{padding:14px 28px;font-size:1.1rem}.btn-sm{padding:6px 14px;font-size:.85rem}.btn-xs{padding:4px 10px;font-size:.78rem}.btn-local{background:#1a6644;color:#fff;border:1px solid #2a9966}.btn-local:hover{background:#285}.top-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:24px;text-align:center;padding:24px}.game-title{font-size:3.5rem;font-weight:900;letter-spacing:-1px}.game-title span{color:var(--accent2)}.game-subtitle{color:var(--text-dim);font-size:1.1rem}.top-buttons{display:flex;flex-direction:column;align-items:center;gap:12px;width:100%;max-width:320px}.join-form{display:flex;gap:8px;width:100%}.join-form input{flex:1;padding:10px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg2);color:var(--text);font-size:1rem;text-transform:uppercase;letter-spacing:2px}.recommend-note{color:var(--text-dim);font-size:.85rem}.waiting-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:20px;padding:24px;text-align:center}.room-id-display{font-size:2.5rem;font-weight:900;letter-spacing:6px;color:var(--accent2);background:var(--bg2);padding:16px 32px;border-radius:var(--radius);border:2px solid var(--accent2)}.share-url-row{display:flex;gap:8px;width:100%;max-width:480px}.share-url-row input{flex:1;padding:10px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg2);color:var(--text-dim);font-size:.9rem}.waiting-message{color:var(--text-dim);animation:pulse 2s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.game-header{position:relative;display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--panel-bg);border-bottom:1px solid var(--border);flex-shrink:0;height:48px}.score-bar{position:absolute;bottom:0;left:0;right:0;height:4px;display:flex;overflow:hidden}.score-bar-b{background:#555;height:100%;transition:width .5s ease}.score-bar-w{background:#ccc;height:100%;transition:width .5s ease}.my-color{font-weight:700;font-size:1rem}.color-b{color:#aaa}.color-w{color:#fff}.turn-indicator{font-weight:600;font-size:1rem}.my-turn{color:#4cff88}.opponent-turn{color:var(--text-dim)}.score-label{margin-left:10px;color:var(--text-dim)}.score-label strong{color:var(--text)}.game-main{display:flex;flex:1;overflow:hidden;height:calc(100vh - 88px)}.panel{width:var(--panel-w);flex-shrink:0;background:var(--panel-bg);border-right:1px solid var(--border);overflow-y:auto;padding:12px 8px}.panel-right{border-right:none;border-left:1px solid var(--border)}.panel details{margin-bottom:12px}.panel summary{cursor:pointer;font-size:.82rem;font-weight:700;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;padding:4px 0;user-select:none}.panel-section{margin-top:8px}input[type=range]{width:100%;margin:8px 0;accent-color:var(--accent2)}.toggle-label{display:flex;align-items:center;gap:8px;font-size:.85rem;margin-bottom:6px;cursor:pointer}.layer-presets{display:flex;gap:4px;flex-wrap:wrap}.move-log{font-size:.8rem}.log-item{padding:4px 0;border-bottom:1px solid var(--border);color:var(--text-dim)}.log-item:last-child{border-bottom:none}.last-move{font-size:.82rem;color:var(--text-dim);line-height:1.5}.canvas-container{flex:1;position:relative;overflow:hidden;background:var(--bg)}#game-canvas{display:block;width:100%!important;height:100%!important}.notice{position:absolute;top:12px;left:50%;transform:translate(-50%);padding:10px 20px;border-radius:var(--radius);font-weight:600;z-index:10;animation:slide-in .3s ease;pointer-events:none;white-space:nowrap}@keyframes slide-in{0%{transform:translate(-50%) translateY(-20px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.pass-notice{background:#0d7cffd9}.disconnect-notice{background:#c9392cd9}.pass-modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:200;background:#0000008c;cursor:pointer;animation:fade-in .2s ease}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.pass-modal-inner{background:var(--bg2);border:2px solid var(--accent2);border-radius:16px;padding:36px 52px;text-align:center;animation:pop-in .25s ease}@keyframes pop-in{0%{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}.pass-modal-icon{font-size:3rem;margin-bottom:12px}.pass-modal-label{font-size:1.8rem;font-weight:900;margin-bottom:8px;color:var(--accent2)}.pass-modal-label.color-b{color:#bbb}.pass-modal-label.color-w{color:#eee}.pass-modal-sub{font-size:.8rem;color:var(--text-dim)}.game-footer{display:flex;align-items:center;gap:12px;padding:0 16px;height:40px;background:var(--panel-bg);border-top:1px solid var(--border);flex-shrink:0}.connected{color:#4cff88;font-size:.8rem}.disconnected{color:var(--accent);font-size:.8rem}.end-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:24px;text-align:center;padding:24px;pointer-events:auto}.end-result{font-size:2.5rem;font-weight:900}.end-result.win{color:#4cff88}.end-result.lose{color:var(--accent)}.end-result.draw{color:var(--accent2)}.end-scores{display:flex;gap:32px;font-size:1.4rem;font-weight:700}.end-score.black{color:#aaa}.end-score.white{color:#fff}.end-buttons{display:flex;gap:16px}.modal{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100}.modal-content{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px;max-width:520px;width:90%;position:relative;max-height:85vh;overflow-y:auto}.modal-sm{max-width:320px;text-align:center}.modal-content h2{font-size:1.4rem;margin-bottom:16px;padding-right:32px}.modal-content h3{font-size:1rem;color:var(--accent2);margin:16px 0 8px}.modal-content ul{padding-left:20px;line-height:1.8;font-size:.9rem;color:var(--text-dim)}.modal-content p{font-size:.9rem;color:var(--text-dim);line-height:1.6}.modal-close{position:absolute;top:12px;right:12px}.resign-label{font-size:1.1rem;font-weight:700;margin-bottom:20px;color:var(--text)}.modal-buttons{display:flex;gap:12px;justify-content:center}.coord-display{position:absolute;padding:4px 10px;background:#00c8ff26;border:1px solid rgba(0,200,255,.5);border-radius:6px;font-size:.8rem;font-family:monospace;color:#0df;pointer-events:none;white-space:nowrap;z-index:20;backdrop-filter:blur(4px)}.place-confirm{position:absolute;bottom:12px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:12px;padding:10px 18px;background:#16213ef5;border:1px solid rgba(0,200,255,.6);border-radius:24px;font-size:.88rem;color:#0cf;font-weight:600;z-index:25;pointer-events:auto;backdrop-filter:blur(8px);box-shadow:0 0 16px #00b4ff4d;white-space:nowrap;animation:slide-up .18s ease}@keyframes slide-up{0%{transform:translate(-50%) translateY(12px);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.place-confirm-buttons{display:flex;gap:8px}.layer-legend{position:absolute;bottom:8px;right:10px;display:flex;gap:8px;font-size:.72rem;font-weight:700;pointer-events:none;opacity:.75}@media (max-width: 1023px){.panel{width:160px}}@media (max-width: 767px){:root{--panel-w: 0px}.panel{position:fixed;bottom:40px;left:0;right:0;width:100%;height:0;overflow:hidden;transition:height .3s;z-index:50}.panel.open{height:200px}.game-main{flex-direction:column}.canvas-container{flex:1;width:100%}.game-header{padding:6px 10px;font-size:.85rem}.turn-indicator{font-size:.85rem}.end-result{font-size:1.8rem}.end-scores{font-size:1.1rem}.end-buttons{flex-direction:column}.pass-modal-inner{padding:24px 32px}.pass-modal-label{font-size:1.4rem}}