.game-board{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);gap:8px;background:var(--apz-bg-panel, #1a0a2a);border:3px solid var(--apz-accent, #00f5ff);border-radius:8px;padding:8px;box-shadow:0 0 20px color-mix(in srgb,var(--apz-accent, #00f5ff) 30%,transparent)}.tile{aspect-ratio:1;display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:bold;border-radius:6px;background:var(--apz-border, #2a1a3a);color:var(--apz-text, #f0ead8);transition:transform 0.1s ease,box-shadow 0.1s ease;user-select:none;-webkit-user-select:none}.tile-empty{background:transparent;box-shadow:none}.tile[data-value]{background:#3a2a4a}.tile-new{animation:tileAppear 0.2s ease-out}.tile-merged{animation:tileMerge 0.15s ease-out}@keyframes tileAppear{0%{transform:scale(0);opacity:0}100%{transform:scale(1);opacity:1}}@keyframes tileMerge{0%{transform:scale(1)}50%{transform:scale(1.15)}100%{transform:scale(1)}}.tile[data-value="2"]{background:#1a3a5a;color:#7ec8f0}.tile[data-value="4"]{background:#1a4a7a;color:#8ed8ff}.tile[data-value="8"]{background:#0a7abf;color:#ffffff}.tile[data-value="16"]{background:#6a0060;color:#f07ad0}.tile[data-value="32"]{background:#b0006a;color:#ffffff}.tile[data-value="64"]{background:#F23C8F;color:#ffffff}.tile[data-value="128"]{background:#c47a00;color:#fff0a0}.tile[data-value="256"]{background:#FFD54A;color:#1a0a00}.tile[data-value="512"]{background:#FFC107;color:#1a0a00}.tile[data-value="1024"]{background:#FFEE58;color:#1a0a00}.tile[data-value="2048"]{background:#ffffff;color:#1a0a00}.tile[data-value="4096"]{background:linear-gradient(135deg,#fff,#f07ad0,#7ec8f0);color:#1a0a00}.tile[data-value="8192"]{background:linear-gradient(135deg,#fff,#f07ad0,#7ec8f0);color:#1a0a00}.tile[data-value="8"]{box-shadow:0 0 8px rgba(10,122,191,0.4)}.tile[data-value="16"]{box-shadow:0 0 8px rgba(106,0,96,0.4)}.tile[data-value="32"]{box-shadow:0 0 10px rgba(176,0,106,0.5)}.tile[data-value="64"]{box-shadow:0 0 12px rgba(242,60,143,0.6)}.tile[data-value="128"]{box-shadow:0 0 14px rgba(196,122,0,0.6)}.tile[data-value="256"]{box-shadow:0 0 16px rgba(255,213,74,0.7)}.tile[data-value="512"]{box-shadow:0 0 18px rgba(255,193,7,0.7)}.tile[data-value="1024"]{box-shadow:0 0 20px rgba(255,238,88,0.8)}.tile[data-value="2048"]{box-shadow:0 0 25px rgba(255,255,255,0.9);animation:glow 1.5s ease-in-out infinite}.tile[data-value="4096"],.tile[data-value="8192"]{box-shadow:0 0 30px rgba(255,255,255,1);animation:glow 0.8s ease-in-out infinite}.game-over-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(10,6,18,0.85);display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:8px;z-index:10;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease}.game-over-overlay.active{opacity:1;visibility:visible}.game-over-title{font-size:24px;color:var(--apz-accent-alt, #ff2d78);text-shadow:0 0 15px color-mix(in srgb,var(--apz-accent-alt, #ff2d78) 60%,transparent);margin-bottom:20px}.game-over-score{font-size:12px;color:var(--apz-text, #f0ead8);margin-bottom:20px}