:root{--board-size:min(calc(100vh - 216px), calc(100vw - 330px));--cell:calc(var(--board-size) / 8)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:'Segoe UI',system-ui,sans-serif;background:#0f0f1a;color:#e0e0e0;height:100vh;overflow:hidden;display:flex;flex-direction:column}#topbar{height:48px;flex-shrink:0;background:#1a1a2e;border-bottom:1px solid #2a2a4a;display:flex;align-items:center;padding:0 20px;gap:10px}#topbar h1{font-size:1.1rem;color:#7ec8e3;letter-spacing:2px}#user-chip{display:none;align-items:center;gap:8px;text-decoration:none;margin-left:8px;background:#13132a;border:1px solid #2a2a4a;border-radius:20px;padding:3px 10px 3px 4px}#user-chip:hover{border-color:#7ec8e3}#uc-avatar{width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.65rem;font-weight:700;color:#fff;overflow:hidden;flex-shrink:0}#uc-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}#uc-title{font-size:.72rem;color:#f0c040;font-weight:700}#uc-name{font-size:.72rem;color:#e0e0e0}#app{display:flex;flex:1;min-height:0}#side{width:256px;flex-shrink:0;background:#1a1a2e;border-right:1px solid #2a2a4a;padding:16px;overflow-y:hidden;display:flex;flex-direction:column;gap:0}#game-section{display:flex;flex-direction:column;flex:1;min-height:0;overflow-y:auto}#side h2{font-size:.82rem;color:#7ec8e3;text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}label{display:block;font-size:.75rem;color:#aaa;margin-bottom:3px;margin-top:9px}input,select{width:100%;padding:7px 9px;border-radius:6px;border:1px solid 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0;color:#9a9ac0;font-size:.8rem;font-weight:600;transition:background .15s,color .15s}.auth-tab:hover{opacity:1;color:#d5d5ec}.auth-tab.active{background:#7ec8e3;color:#0f0f1a}.auth-tab.active:hover{opacity:1;color:#0f0f1a}.auth-msg{display:none;font-size:.76rem;line-height:1.4;border-radius:8px;padding:9px 11px;margin-bottom:12px}.auth-msg.show{display:block}.auth-msg.err{background:#2a1416;border:1px solid #7a3238;color:#f0a0a4}.auth-msg.ok{background:#10251a;border:1px solid #2f6b46;color:#85e0a8}.auth-msg.info{background:#12203a;border:1px solid #2f527a;color:#9fc4f0}.pw-wrap{position:relative}.pw-wrap input{padding-right:54px}.pw-toggle{position:absolute;top:50%;right:6px;transform:translateY(-50%);width:auto;margin:0;padding:4px 8px;background:0 0;color:#7ec8e3;font-size:.72rem;font-weight:600;border-radius:5px}.pw-toggle:hover{opacity:1;background:#22224a}.pw-strength{margin-top:8px}.pw-bar{height:5px;border-radius:3px;background:#22223e;overflow:hidden}.pw-bar span{display:block;height:100%;width:0;border-radius:3px;background:#e07070;transition:width .2s,background .2s}.pw-bar span.s1{width:33%;background:#e07070}.pw-bar span.s2{width:66%;background:#e0b050}.pw-bar span.s3{width:100%;background:#5fce7f}.pw-hint{display:block;font-size:.7rem;color:#8a8ab0;margin-top:5px}.age-check{display:flex;align-items:flex-start;gap:10px;cursor:pointer;font-size:.76rem;color:#9a9ac0;font-weight:400;margin-top:12px;line-height:1.4}.age-check input[type=checkbox]{-webkit-appearance:none;appearance:none;flex-shrink:0;width:24px;height:24px;margin:0;padding:0;border:2px solid #7ec8e3;border-radius:6px;background:#0f0f1a;cursor:pointer;position:relative;transition:background .15s,border-color .15s}.age-check input[type=checkbox]:checked{background:#7ec8e3;border-color:#7ec8e3}.age-check input[type=checkbox]:checked::after{content:'';position:absolute;left:8px;top:3px;width:6px;height:12px;border:solid #0f0f1a;border-width:0 3px 3px 0;transform:rotate(45deg)}.age-check input[type=checkbox]:focus-visible{outline:2px solid #b78fff;outline-offset:2px}.age-check a{color:#7ec8e3}#auth-submit{margin-top:14px}.auth-alt{text-align:center;margin-top:10px}.auth-alt a{font-size:.74rem;color:#7ec8e3;text-decoration:none}.auth-alt a:hover{text-decoration:underline}.forgot-box{background:#13132a;border:1px solid #2a2a4a;border-radius:8px;padding:12px;margin-top:10px}.forgot-box button{margin-top:8px}.forgot-msg{font-size:.74rem;margin-top:8px;min-height:16px}.auth-benefits{list-style:none;margin:16px 0 0;padding:14px 0 0;border-top:1px solid #22223e}.auth-benefits li{position:relative;font-size:.76rem;color:#9a9ac0;padding:3px 0 3px 22px;line-height:1.4}.auth-benefits li::before{content:'✓';position:absolute;left:0;top:3px;color:#5fce7f;font-weight:700}#auth-section.mode-login .reg-only{display:none}#auth-section.mode-register .login-only{display:none}#status-box{background:#0f0f1a;border:1px solid #2a2a4a;border-radius:6px;padding:9px;font-size:.74rem;color:#ccc;min-height:44px;line-height:1.5;word-break:break-word;margin-top:12px}#verify-banner{display:none;align-items:center;gap:10px;margin-bottom:14px}#verify-email-btn{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;width:auto;margin:0;background:linear-gradient(135deg,#7ec8e3,#5aa9c9);color:#0f0f1a;border:none;border-radius:8px;padding:8px 16px;font-size:.82rem;font-weight:700;cursor:pointer;white-space:nowrap;box-shadow:0 3px 10px rgba(126,200,227,.25);transition:filter .15s}#verify-email-btn:hover{filter:brightness(1.08)}#verify-email-btn:disabled{background:#16321f;color:#7ee787;box-shadow:none;cursor:default}#verify-banner-msg{font-size:.74rem;color:#8a8aa5}#draw-banner{display:none;background:#1a2a1a;border:1px solid #3a6b3a;border-radius:6px;padding:10px;margin-top:8px;text-align:center}#draw-banner p{font-size:.75rem;color:#7ec87e;margin-bottom:8px}#draw-banner .btn-row{display:flex;gap:6px}#draw-banner button{margin-top:0}#takeback-banner{display:none;background:#1a1a2e;border:1px solid #4a4a8a;border-radius:6px;padding:10px;margin-top:8px;text-align:center}#takeback-banner p{font-size:.75rem;color:#a0a0d0;margin-bottom:8px}#takeback-banner .btn-row{display:flex;gap:6px}#takeback-banner button{margin-top:0}#challenge-banner{display:none;background:#1a1a3a;border:1px solid #5a3a8a;border-radius:8px;padding:10px 12px;margin-top:10px}#challenge-banner .ch-head{font-size:.75rem;color:#c07ee0;font-weight:700;margin-bottom:6px}#challenge-banner .ch-info{font-size:.8rem;color:#e0e0e0;margin-bottom:8px}#challenge-banner .btn-row{display:flex;gap:6px}#challenge-banner button{margin-top:0}#lobby-section{margin-top:12px}#lobby-section h2{margin-bottom:6px}#play-home{display:flex;flex-direction:column;width:280px;flex-shrink:0;overflow-y:auto;background:#1a1a2e;border-left:1px solid #2a2a4a;padding:16px}#play-home h2{font-size:1.1rem;font-weight:700;margin-bottom:12px;letter-spacing:.5px}.ph-cat-tabs{display:flex;gap:6px;margin-bottom:16px;flex-wrap:wrap}.ph-cat-btn{padding:5px 16px;border-radius:16px;border:1px solid #2a2a4a;font-size:.78rem;font-weight:600;background:#1a1a2e;color:#aaa;cursor:pointer;transition:all .15s}.ph-cat-btn:hover{color:#e0e0e0}.ph-cat-btn.active{background:#7ec8e3;color:#0f0f1a;border-color:#7ec8e3}#ph-loading{font-size:.82rem;color:#7ec8e3;padding:20px 0;text-align:center}#ph-table-wrap{background:#1a1a2e;border:1px solid #2a2a4a;border-radius:10px;overflow:hidden}#ph-table-wrap table{width:100%;border-collapse:collapse;font-size:.83rem}#ph-table-wrap thead th{padding:9px 14px;text-align:left;font-size:.68rem;color:#888;text-transform:uppercase;letter-spacing:1px;border-bottom:1px solid #2a2a4a;font-weight:600}#ph-table-wrap tbody tr{border-bottom:1px solid #161626;transition:background .1s}#ph-table-wrap tbody tr:last-child{border-bottom:none}#ph-table-wrap tbody tr:hover{background:rgba(126,200,227,.04)}#ph-table-wrap td{padding:9px 14px}.ph-rank{color:#666;width:36px}.ph-rank.gold{color:#c8a84b;font-weight:700}.ph-rank.silver{color:#9ea1a8;font-weight:700}.ph-rank.bronze{color:#b87333;font-weight:700}.ph-player{display:flex;align-items:center;gap:8px}.ph-av{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;color:#0f0f1a;flex-shrink:0;overflow:hidden}.ph-av img{width:100%;height:100%;object-fit:cover}.ph-name{font-weight:600}.ph-rating{font-weight:700;color:#7ec8e3;font-size:.95rem}.ph-record{color:#888;font-size:.75rem;white-space:nowrap}.ph-record .w{color:#6bbf6b}.ph-record .l{color:#e07070}.lobby-player{display:flex;align-items:center;gap:8px;padding:5px 0;border-bottom:1px solid #1f1f3a;font-size:.78rem}.lobby-player:last-child{border-bottom:none}.lobby-dot{width:7px;height:7px;border-radius:50%;background:#6ecb6e;flex-shrink:0}.lobby-name{flex:1;font-weight:600;color:#e0e0e0}.lobby-rating{color:#888;font-size:.72rem}.lobby-chal{padding:2px 8px;border-radius:4px;font-size:.68rem;font-weight:700;border:1px solid #5a3a8a;background:#1a0a2a;color:#c07ee0;cursor:pointer;margin-top:0;width:auto;transition:all .15s}.lobby-chal:hover{background:#2a1a4a;border-color:#c07ee0;opacity:1}#lobby-empty{font-size:.72rem;color:#8a8aa5;padding:4px 0}#live-section{margin-top:12px}#live-section h2{margin-bottom:8px}.live-game-row{background:#0f0f1a;border:1px solid #2a2a4a;border-radius:6px;padding:8px 10px;margin-bottom:6px;cursor:pointer;transition:border-color .15s;font-size:.75rem}.live-game-row:hover{border-color:#7ec8e3}.live-game-row .players{font-weight:600;margin-bottom:2px}.live-game-row .meta{color:#888}#spectator-badge{display:none;position:absolute;top:8px;right:8px;background:#2a2a4a;color:#7ec8e3;font-size:.68rem;font-weight:700;letter-spacing:1px;padding:3px 9px;border-radius:10px;pointer-events:none}#game-area{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:10px 16px;gap:6px;min-height:0}.player-bar{width:var(--board-size);display:flex;align-items:center;gap:10px;padding:7px 12px;border-radius:8px;background:#1a1a2e;border:1px solid #2a2a4a;flex-shrink:0}.player-bar.active{border-color:#7ec8e3;box-shadow:0 0 0 1px #7ec8e340}.player-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700;color:#0f0f1a;flex-shrink:0;overflow:hidden;background:#555}.player-avatar img{width:100%;height:100%;object-fit:cover}.player-info{flex:1;min-width:0}.player-info .name{font-size:.9rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-info .elo{font-size:.72rem;color:#888}.clock-box{font-variant-numeric:tabular-nums;font-size:1.4rem;font-weight:700;color:#e0e0e0;background:#0f0f1a;padding:4px 12px;border-radius:6px;min-width:80px;text-align:center;border:1px solid #2a2a4a;flex-shrink:0}.player-bar.active .clock-box{color:#fff;border-color:#7ec8e3}#board-section{display:flex;align-items:flex-start}#board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);width:var(--board-size);height:var(--board-size);border:2px solid #2a2a4a;border-radius:2px;overflow:hidden;user-select:none}.sq{display:flex;align-items:center;justify-content:center;font-size:0;cursor:pointer;position:relative;transition:background .08s}.sq:hover{filter:brightness(1.1)}.piece{font-size:calc(var(--cell) * .82);line-height:1;pointer-events:none;user-select:none}.piece.pw{color:#fff;-webkit-text-stroke:1.8px #1c1c1c;paint-order:stroke fill;filter:drop-shadow(0 1px 2px rgba(0,0,0,.55))}.piece.pb{color:#1c1c1c;-webkit-text-stroke:0.5px rgba(255,255,255,0.18);paint-order:stroke fill;filter:drop-shadow(0 1px 2px rgba(0,0,0,.45))}.light{background:var(--sq-light,#eeeed2)}.dark{background:var(--sq-dark,#769656)}.sq.selected{background:#f6f669!important}.sq.last-from{background:#baca2b!important}.sq.last-to{background:#cdd26a!important}.sq.pm-from{background:rgba(20,160,200,.75)!important}.sq.pm-to{background:rgba(20,160,200,.45)!important}.sq.can-move::after{content:'';position:absolute;width:32%;height:32%;border-radius:50%;background:rgba(0,0,0,.2);pointer-events:none}.sq.can-capture::after{content:'';position:absolute;inset:0;border:4px solid rgba(0,0,0,.22);pointer-events:none}#mode-row{display:flex;gap:6px;margin-bottom:14px}#mode-row button{flex:1;margin-top:0}#computer-controls{display:none}.strength-row{display:flex;align-items:center;gap:8px;margin-top:4px}input[type=range]{flex:1;accent-color:#7ec8e3;height:4px;cursor:pointer}.elo-label{font-size:.82rem;font-weight:700;color:#7ec8e3;min-width:42px;text-align:right}.diff-levels{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;margin-top:4px}.diff-btn{border:1px solid #2a2a4a;background:#13132a;color:#aaa;border-radius:6px;padding:5px 4px;font-size:.68rem;cursor:pointer;text-align:center;transition:border-color .12s,background .12s}.diff-btn:hover{border-color:#4a4a7a;background:#1a1a2e}.diff-btn.active{border-color:#7ec8e3;background:#1a2a3a;color:#7ec8e3}.bot-ladder{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:6px;margin-top:4px}.bot-card{display:flex;flex-direction:column;align-items:center;gap:2px;border:1px solid #2a2a4a;background:#13132a;color:#ccc;border-radius:8px;padding:8px 4px;cursor:pointer;transition:border-color .12s,background .12s}.bot-card:hover:not(.locked){border-color:#4a4a7a;background:#1a1a2e}.bot-card.sel{border-color:#7ec8e3;background:#1a2a3a}.bot-card.locked{opacity:.5;cursor:not-allowed}.bot-card .bc-emoji{font-size:1.35rem;line-height:1}.bot-card .bc-name{font-size:.74rem;font-weight:700;color:#e0e0e0}.bot-card .bc-elo{font-size:.6rem;color:#8a8aa5}.bot-card .bc-beat{color:#5ac97a}.color-row{display:flex;gap:5px;margin-top:8px}.color-btn{flex:1;margin-top:0;padding:6px 0;border-radius:6px;border:1px solid #2a2a4a;background:#0f0f1a;color:#aaa;cursor:pointer;font-size:.75rem;transition:all .15s}.color-btn.sel{border-color:#7ec8e3;background:#1a2a3a;color:#7ec8e3;font-weight:700}#chat-panel{display:none;flex-direction:column;border-top:1px solid #2a2a4a;margin-top:10px;padding-top:10px;flex:1;min-height:0}#chat-panel h2{font-size:.82rem;color:#7ec8e3;text-transform:uppercase;letter-spacing:1px;margin-bottom:8px}#chat-messages{flex:1;min-height:80px;max-height:220px;overflow-y:auto;background:#0f0f1a;border:1px solid #2a2a4a;border-radius:6px;padding:8px;font-size:.72rem;line-height:1.6}.chat-msg{word-break:break-word}.chat-user{font-weight:700;margin-right:4px}.chat-user.white{color:#e0e0e0}.chat-user.black{color:#aaa}.chat-user.spectator{color:#7ec87e}#chat-input-row{display:flex;gap:6px;margin-top:6px}#chat-input{flex:1;padding:6px 8px;border-radius:6px;border:1px solid #2a2a4a;background:#0f0f1a;color:#e0e0e0;font-size:.78rem}#chat-input:focus{outline:0;border-color:#7ec8e3}#chat-send{width:auto;margin-top:0;padding:6px 10px}.rank-labels{display:flex;flex-direction:column;width:18px;height:var(--board-size);justify-content:space-around;font-size:.6rem;color:#888;align-items:center;flex-shrink:0}.file-labels{display:flex;width:var(--board-size);justify-content:space-around;font-size:.6rem;color:#888;padding:2px 0}#board-controls{display:flex;flex-direction:column;gap:8px;margin-left:8px;align-self:center}#draw-icon-btn,#flip-btn,#resign-icon-btn{background:#2a2a4a;border:1px solid #3a3a6a;color:#aaa;width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:1rem;align-items:center;justify-content:center;margin:0;padding:0;transition:all .15s}#flip-btn{display:flex}#draw-icon-btn:hover,#flip-btn:hover{color:#7ec8e3;border-color:#7ec8e3}#resign-icon-btn:hover{color:#e07070;border-color:#e07070}#settings-btn{background:0 0;border:none;color:#aaa;cursor:pointer;font-size:1.1rem;margin:0;padding:4px 8px;width:auto;transition:color .15s}#settings-btn:hover{color:#7ec8e3}#settings-overlay{position:fixed;inset:0;background:rgba(0,0,0,.72);display:none;align-items:center;justify-content:center;z-index:100}#settings-modal{background:#1a1a2e;border:1px solid #2a2a4a;border-radius:12px;width:360px;max-height:80vh;overflow-y:auto;padding:24px}#settings-modal h3{color:#7ec8e3;font-size:.95rem;margin-bottom:0}.stab-row{display:flex;border-bottom:1px solid #2a2a4a;margin-bottom:16px;margin-top:14px}.stab{background:0 0;border:none;border-bottom:2px solid transparent;color:#888;padding:8px 16px;font-size:.85rem;cursor:pointer;width:auto;margin:0;transition:all .15s}.stab.active{color:#7ec8e3;border-color:#7ec8e3}.stab:hover{color:#bbb}.tog-row{display:flex;align-items:center;justify-content:space-between;padding:10px 0;border-bottom:1px solid #1f1f3a}.tog-label{font-size:.82rem;color:#ccc}.tog{position:relative;width:44px;height:24px;display:inline-block}.tog input{opacity:0;width:0;height:0}.tog-slider{position:absolute;inset:0;background:#2a2a4a;border-radius:24px;cursor:pointer;transition:.2s}.tog-slider::before{content:'';position:absolute;width:18px;height:18px;left:3px;top:3px;background:#fff;border-radius:50%;transition:.2s}.tog input:checked+.tog-slider{background:#7ec8e3}.tog input:checked+.tog-slider::before{transform:translateX(20px)}.mm-btn-row{display:flex;gap:6px;margin-top:6px}.mm-btn{flex:1;margin:0;padding:7px 4px;border-radius:6px;border:1px solid #2a2a4a;background:#0f0f1a;color:#aaa;cursor:pointer;font-size:.72rem;transition:all .15s}.mm-btn.sel{border-color:#7ec8e3;background:#1a2a3a;color:#7ec8e3;font-weight:700}.theme-swatch{width:32px;height:32px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:.15s;display:flex;overflow:hidden;flex-shrink:0}.theme-swatch.sel{border-color:#7ec8e3;box-shadow:0 0 0 1px #7ec8e380}.theme-swatch:hover{opacity:.85}#drag-ghost{position:fixed;pointer-events:none;z-index:200;font-size:calc(var(--cell) * .82);line-height:1;display:none;transform:translate(-50%,-50%);filter:drop-shadow(0 2px 8px rgba(0,0,0,.7))}#promo-dialog{position:fixed;inset:0;background:rgba(0,0,0,.82);display:none;align-items:center;justify-content:center;z-index:150}#promo-box{background:#1a1a2e;border:1px solid #2a2a4a;border-radius:12px;padding:20px;display:flex;gap:10px}.promo-piece{font-size:2.8rem;cursor:pointer;padding:10px 14px;border-radius:8px;border:1px solid #2a2a4a;background:#0f0f1a;line-height:1;transition:.15s;user-select:none}.promo-piece:hover{background:#2a2a4a;border-color:#7ec8e3}#pg-modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.75);z-index:9100;align-items:center;justify-content:center}#pg-box{background:#1a1a2e;border:1px solid #2a2a4a;border-radius:14px;padding:28px;width:min(460px,92vw);max-height:88vh;overflow-y:auto}#pg-box 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