@import"https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&family=Orbitron:wght@500;700;900&display=swap";:root{--bg: #0A0014;--surface: #1A0028;--primary: #00F5FF;--primary-dark: #00C2D1;--accent: #FF006E;--text: #F0F0FF;--text-muted: #A8A8C8;--border: #2A1845;--success: #10B981;--warning: #F59E0B;--danger: #FF006E;--radius: 4px;--shadow: 0 12px 36px rgba(0,0,0,.4), 0 0 28px #00F5FF26;--square-light: #2A1845;--square-dark: #1A0028;--square-selected: #007B8A;--square-possible-move: #00F5FF;--square-last-move: #3A004D;--square-check: #FF006E;--bg-piece-dark: #0A0014}body{margin:0;padding:0;background:linear-gradient(135deg,#0a0014,#1a0028),repeating-linear-gradient(0deg,transparent,transparent 39px,#00F5FF11 40px),repeating-linear-gradient(90deg,transparent,transparent 39px,#FF006E08 40px),var(--bg);color:var(--text);font-family:JetBrains Mono,SF Mono,Consolas,monospace;display:flex;justify-content:center;align-items:center;min-height:100vh;overflow:hidden;font-size:16px;line-height:1.5}.app-container{display:flex;flex-direction:column;align-items:center;gap:20px;padding:20px;max-width:90vw;width:100%;box-sizing:border-box}.cloud-status{position:absolute;top:10px;right:10px;background:#00f5ff1a;color:var(--primary);padding:8px 12px;border-radius:var(--radius);font-size:.8em;z-index:1000;box-shadow:0 0 8px #00f5ff4d}.game-title{font-family:Orbitron,sans-serif;font-size:3em;color:var(--primary);text-shadow:0 0 20px var(--accent),0 0 30px var(--primary);margin-bottom:20px;letter-spacing:2px;text-align:center}.game-area{position:relative;width:100%;max-width:800px;display:flex;justify-content:center;align-items:center;min-height:600px}.start-screen,.game-screen,.game-over-overlay,.promotion-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;box-sizing:border-box;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid var(--border)}.start-title{font-family:Orbitron,sans-serif;font-size:2.5em;color:var(--primary);text-shadow:0 0 15px var(--accent);margin-bottom:15px}.start-message{font-size:1.1em;color:var(--text-muted);text-align:center;margin-bottom:30px;max-width:80%}.action-button{background:linear-gradient(90deg,var(--primary),var(--primary-dark));color:var(--bg);border:none;padding:12px 28px;border-radius:var(--radius);font-family:JetBrains Mono,monospace;font-size:1.2em;cursor:pointer;display:flex;align-items:center;gap:8px;box-shadow:0 0 15px var(--primary);transition:all .3s ease;text-transform:uppercase;font-weight:700}.action-button:hover{box-shadow:0 0 25px var(--primary),0 0 5px var(--primary-dark) inset;transform:translateY(-2px)}.action-button.danger{background:linear-gradient(90deg,var(--danger),#CC0057);box-shadow:0 0 15px var(--danger)}.action-button.danger:hover{box-shadow:0 0 25px var(--danger),0 0 5px #cc0057 inset}.controls-hint{margin-top:40px;background:#00f5ff0d;border:1px solid rgba(0,245,255,.2);border-radius:var(--radius);padding:15px 20px;color:var(--text-muted);font-size:.9em;text-align:left;max-width:80%}.controls-hint p{margin-top:0;color:var(--primary);font-weight:700}.controls-hint ul{list-style:none;padding-left:0;margin-bottom:0}.controls-hint li{margin-bottom:5px;display:flex;align-items:center}.game-info{width:100%;display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:10px}.turn-indicator{padding:8px 15px;border-radius:var(--radius);font-weight:700;font-size:1.1em;letter-spacing:1px;text-shadow:0 0 8px rgba(0,0,0,.5)}.turn-indicator.white-turn{background:var(--text);color:var(--bg);box-shadow:0 0 10px #f0f0ff80}.turn-indicator.black-turn{background:var(--bg-piece-dark);color:var(--text);box-shadow:0 0 10px #0a001480}.message-box{flex-grow:1;text-align:center;padding:8px 15px;background:#00f5ff14;border-radius:var(--radius);color:var(--primary);font-size:1em;border:1px solid rgba(0,245,255,.2);margin:0 10px;min-width:150px}.game-controls{display:flex;gap:10px}.control-button{background:var(--surface);color:var(--primary);border:1px solid var(--border);border-radius:var(--radius);padding:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 0 10px #00f5ff33;transition:all .2s ease}.control-button:hover{background:var(--primary);color:var(--bg);box-shadow:0 0 15px var(--primary)}.control-button.danger{color:var(--danger);box-shadow:0 0 10px #ff006e33}.control-button.danger:hover{background:var(--danger);color:var(--text);box-shadow:0 0 15px var(--danger)}.chessboard-container{display:grid;grid-template-columns:auto repeat(8,1fr);grid-template-rows:repeat(8,1fr) auto;width:min(80vw,600px);height:min(80vw,600px);max-width:600px;max-height:600px;border:4px solid var(--primary);box-shadow:var(--shadow);border-radius:var(--radius);overflow:hidden;position:relative;transform-style:preserve-3d;perspective:1000px}.chessboard-container.flipped{transform:rotateX(180deg) rotateY(180deg)}.chessboard{display:contents}.square{width:100%;height:100%;display:flex;justify-content:center;align-items:center;position:relative;transition:background-color .2s ease;transform-style:preserve-3d}.square.light{background-color:var(--square-light)}.square.dark{background-color:var(--square-dark)}.square.selected{background-color:var(--square-selected);box-shadow:inset 0 0 15px var(--primary),0 0 10px var(--primary);z-index:1}.square.last-move{background-color:var(--square-last-move)}.square.check{background-color:var(--square-check);box-shadow:inset 0 0 15px var(--danger),0 0 10px var(--danger);z-index:1}.piece-wrapper{width:80%;height:80%;display:flex;justify-content:center;align-items:center;position:relative;z-index:2}.piece{width:100%;height:100%;filter:drop-shadow(0 0 5px rgba(0,245,255,.5))}.piece-wrapper.black-piece .piece{filter:drop-shadow(0 0 5px rgba(255,0,110,.5))}.possible-move-indicator{position:absolute;width:30%;height:30%;background-color:var(--primary);border-radius:50%;opacity:.6;pointer-events:none;z-index:0;box-shadow:0 0 10px var(--primary)}.possible-move-indicator.capture{width:80%;height:80%;background-color:transparent;border:3px solid var(--primary);opacity:.8}.rank-label,.file-label{display:flex;justify-content:center;align-items:center;font-size:.9em;color:var(--text-muted);font-weight:700;background:var(--surface)}.rank-label{grid-column:1}.file-label{grid-row:9}.corner-spacer{grid-column:1;grid-row:9;background:var(--surface)}.game-over-overlay,.promotion-overlay{background:#0a0014d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:10}.game-over-panel,.promotion-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px;text-align:center;max-width:400px;width:90%}.game-over-panel h3,.promotion-panel h3{font-family:Orbitron,sans-serif;color:var(--primary);text-shadow:0 0 10px var(--accent);margin-bottom:20px;font-size:1.8em}.game-result{font-size:1.2em;color:var(--text);margin-bottom:30px}.promotion-options{display:flex;justify-content:center;gap:15px;margin-top:20px}.promotion-option-button{background:var(--square-light);border:1px solid var(--border);border-radius:var(--radius);padding:10px;cursor:pointer;width:60px;height:60px;display:flex;justify-content:center;align-items:center;box-shadow:0 0 10px #00f5ff33;transition:all .2s ease}.promotion-option-button:hover{background:var(--primary);box-shadow:0 0 15px var(--primary)}.promotion-option-button .piece{width:90%;height:90%}@media (max-width: 768px){.game-title{font-size:2.2em}.start-title{font-size:1.8em}.start-message{font-size:1em}.action-button{padding:10px 20px;font-size:1em}.chessboard-container{width:min(95vw,450px);height:min(95vw,450px)}.game-info{flex-direction:column}.message-box{margin:10px 0;width:100%}.game-controls{width:100%;justify-content:center}.rank-label,.file-label{font-size:.7em}}@media (max-width: 480px){.game-title{font-size:1.8em}.start-title{font-size:1.5em}.promotion-options{gap:10px}.promotion-option-button{width:50px;height:50px;padding:5px}}