*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #1a1a2e;--bg-secondary: #16213e;--bg-surface: #0f3460;--bg-card: #1c2541;--text-primary: #eaeaea;--text-secondary: #a0a0b8;--accent-gold: #e0c097;--accent-gold-hover: #f0d0a7;--accent-gold-dim: #b09060;--danger: #e05555;--success: #55cc55;--border-color: #2a2a4a;--radius: 6px;--font-mono: "Courier New", Courier, monospace}html,body{width:100%;height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:16px;line-height:1.5;color:var(--text-primary);background-color:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:var(--accent-gold);text-decoration:none}.screen{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;width:100%;height:100%}.hidden{display:none!important}input[type=text]{padding:10px 14px;font-size:1rem;color:var(--text-primary);background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius);outline:none;transition:border-color .2s ease}input[type=text]:focus{border-color:var(--accent-gold)}input[type=text]::placeholder{color:var(--text-secondary)}button{padding:10px 20px;font-size:1rem;font-weight:600;color:var(--bg-primary);background-color:var(--accent-gold);border:none;border-radius:var(--radius);cursor:pointer;transition:background-color .2s ease,transform .1s ease}button:hover{background-color:var(--accent-gold-hover)}button:active{transform:scale(.97)}button:disabled{opacity:.5;cursor:not-allowed}.screen-center{display:flex;flex-direction:column;align-items:center;gap:20px;text-align:center}.screen-center h1{font-size:3rem;color:var(--accent-gold);letter-spacing:2px}.screen-center .subtitle{color:var(--text-secondary);font-size:1.1rem;margin-top:-8px}.screen-center input[type=text]{width:280px;text-align:center;font-size:1.1rem}.screen-center button{width:280px;font-size:1.1rem;padding:12px 20px}.lobby-container{width:100%;max-width:700px;padding:24px;display:flex;flex-direction:column;gap:20px;max-height:100vh}.lobby-header{display:flex;align-items:center;justify-content:space-between}.lobby-header h2{font-size:1.5rem;color:var(--accent-gold)}.lobby-nickname{font-size:.95rem;color:var(--text-secondary);font-style:italic}.lobby-actions{display:flex;gap:10px}.lobby-actions input[type=text]{flex:1}.room-list{display:flex;flex-direction:column;gap:10px;overflow-y:auto;max-height:calc(100vh - 200px);padding-right:4px}.room-list::-webkit-scrollbar{width:6px}.room-list::-webkit-scrollbar-track{background:transparent}.room-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.room-card{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);transition:border-color .2s ease}.room-card:hover{border-color:var(--accent-gold-dim)}.room-card-info{display:flex;flex-direction:column;gap:4px}.room-card-name{font-size:1.05rem;font-weight:600;color:var(--text-primary)}.room-card-meta{font-size:.85rem;color:var(--text-secondary)}.room-card-actions{display:flex;gap:8px}.room-card-actions button{padding:6px 14px;font-size:.85rem}.room-card-actions .watch-btn{background-color:transparent;color:var(--accent-gold);border:1px solid var(--accent-gold-dim)}.room-card-actions .watch-btn:hover{background-color:#e0c0971a;color:var(--accent-gold-hover)}.room-empty{text-align:center;color:var(--text-secondary);padding:40px 0;font-size:.95rem}.game-layout{position:relative;display:flex;flex-direction:column;width:100%;height:100%}.game-info-bar{display:flex;align-items:center;padding:6px 20px;background-color:var(--bg-secondary);border-bottom:1px solid var(--border-color);font-size:.9rem;min-height:48px;flex-shrink:0}.game-info-bar .player-list{display:flex;flex-direction:column;gap:2px}.game-info-bar .player-row{display:flex;align-items:center;gap:4px;padding:2px 8px;border-radius:var(--radius);color:var(--text-secondary);line-height:1.4}.game-info-bar .player-row.active-turn{color:var(--accent-gold);font-weight:600}.game-info-bar .piece-icon{font-size:1.1rem}.game-info-bar .player-color{font-weight:600}.game-info-bar .player-sep{opacity:.5}.game-info-bar .player-you{opacity:.7;font-style:italic;margin-left:2px}.game-info-bar .player-to-move{margin-left:4px;font-size:.8em;opacity:.8;font-style:italic}.game-info-bar .game-status{flex:1;text-align:center;font-size:1.15rem;font-weight:700;color:var(--text-primary);letter-spacing:.02em}.game-main{display:flex;flex:1;min-height:0}.board-container{flex:1;display:flex;align-items:center;justify-content:center;padding:16px;min-width:0}.board-container canvas{max-width:100%;max-height:100%}.chat-sidebar{width:280px;flex-shrink:0;display:flex;flex-direction:column;background-color:var(--bg-secondary);border-left:1px solid var(--border-color)}.chat-header{padding:12px 16px;font-weight:600;color:var(--accent-gold);border-bottom:1px solid var(--border-color);font-size:.95rem;flex-shrink:0}.chat-messages{flex:1;overflow-y:auto;padding:10px 12px;display:flex;flex-direction:column;gap:6px;min-height:0}.chat-messages::-webkit-scrollbar{width:5px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.chat-msg{font-size:.85rem;line-height:1.4;word-break:break-word}.chat-msg .chat-nick{font-weight:600;color:var(--accent-gold)}.chat-msg .chat-text{color:var(--text-primary)}.chat-msg.system-msg{color:var(--text-secondary);font-style:italic;font-size:.8rem}.chat-input-area{display:flex;gap:6px;padding:10px 12px;border-top:1px solid var(--border-color);flex-shrink:0}.chat-input-area input[type=text]{flex:1;padding:8px 10px;font-size:.85rem;min-width:0}.chat-input-area button{padding:8px 12px;font-size:.85rem}.back-btn{position:fixed;bottom:16px;left:16px;padding:8px 16px;font-size:.85rem;background-color:transparent;color:var(--text-secondary);border:1px solid var(--border-color);z-index:10}.back-btn:hover{color:var(--text-primary);border-color:var(--text-secondary);background-color:#ffffff0d}@media(max-width:768px){.game-main{flex-direction:column}.chat-sidebar{width:100%;height:200px;border-left:none;border-top:1px solid var(--border-color)}.lobby-container{padding:16px}.lobby-actions{flex-direction:column}.room-card{flex-direction:column;align-items:flex-start;gap:10px}.room-card-actions{width:100%}.room-card-actions button{flex:1}}