@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--bg: #0A0A0B;--surface: #15151A;--primary: #7C5CFA;--primary-dark: #6447E0;--accent: #8B5CF6;--text: #FAFAFA;--text-muted: #9CA3AF;--border: #27272A;--success: #22C55E;--warning: #F59E0B;--danger: #EF4444;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04)}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;min-height:100vh;display:flex;align-items:center;justify-content:center}.game-container{background:var(--surface);border-radius:24px;padding:24px 20px 28px;width:100%;max-width:620px;margin:16px;box-shadow:0 20px 60px #0009,inset 0 0 1px #ffffff0d;border:1px solid var(--border)}.game-title{text-align:center;font-size:1.5rem;font-weight:700;display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px;background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.cloud-badge{font-size:.6rem;background:#7c5cfa26;-webkit-text-fill-color:var(--accent);padding:2px 10px;border-radius:20px;border:1px solid rgba(124,92,250,.2)}.start-screen{text-align:center;padding:40px 0}.start-screen h2{font-size:1.2rem;margin-bottom:20px;color:var(--text-muted)}.mode-buttons{display:flex;gap:16px;justify-content:center}.mode-btn{display:flex;align-items:center;gap:8px;background:#ffffff0d;border:1px solid var(--border);color:var(--text);padding:14px 28px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.mode-btn:hover{background:#ffffff1a}.mode-btn.primary{background:var(--primary);border-color:var(--primary)}.mode-btn.primary:hover{background:var(--primary-dark)}.status-bar{display:flex;align-items:center;gap:10px;justify-content:center;margin-bottom:14px;font-size:1rem;font-weight:600;padding:8px 20px;border-radius:30px;background:#0000004d;min-height:44px}.status-text.winner{color:var(--warning)}.spinner{animation:spin 1s linear infinite;color:var(--primary)}.game-layout{display:flex;gap:20px;align-items:flex-start;justify-content:center;flex-wrap:wrap}.board-wrapper{flex-shrink:0}.board{display:grid;grid-template-columns:repeat(15,1fr);grid-template-rows:repeat(15,1fr);gap:1px;width:360px;height:360px;border-radius:8px;overflow:hidden}.cell{background:#1a1a1a;width:100%;height:100%;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative}.cell:hover{background:#2a2a2a}.stone{width:80%;height:80%;border-radius:50%}.stone.black{background:#333}.stone.white{background:#fff}.last-marker{position:absolute;top:2px;left:2px;width:6px;height:6px;border-radius:50%;background:var(--success)}.side-panel{min-width:100px}.score-card{background:#0000004d;border-radius:var(--radius);padding:14px 16px;margin-bottom:12px}.score-card h3{font-size:.85rem;color:var(--text-muted);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.score-card p{display:flex;justify-content:space-between;margin:4px 0;font-size:.9rem}.label-player{color:var(--success)}.label-ai{color:var(--danger)}.label-draw{color:var(--text-muted)}.action-buttons{display:flex;gap:8px;flex-direction:column}.action-btn{display:flex;align-items:center;gap:6px;background:#ffffff0d;border:1px solid var(--border);color:var(--text);padding:8px 16px;border-radius:var(--radius);font-size:.85rem;font-weight:500;cursor:pointer;transition:all .15s}.action-btn:hover{background:#ffffff1a}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}