:root {
    --bg: #120a05;
    --wood: #9b6b3d;
    --wood-dark: #3d2616;
    --gold: #ffd700;
    --wood-dark: #b8860b;
}

body {
    margin: 0; height: 100vh; display: flex; justify-content: center; align-items: center;
    background: var(--bg); color: #f0e6d2; font-family: sans-serif; overflow: hidden; touch-action: none;
    transition: background 0.5s;
}

/* SKIN VARIATIONS */
body.skin-neon { --bg: #000510; --wood: #00d4ff; --wood-dark: #001a33; --gold: #00ffcc; }
body.skin-royal { --bg: #1a001a; --wood: #9b30ff; --wood-dark: #330033; --gold: #ffd700; }

#game-ui { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.header { display: flex; gap: 20px; background: var(--wood-dark); padding: 10px 20px; border-radius: 15px; border: 2px solid var(--wood); }
.stat-item { font-weight: bold; color: var(--gold); }
.btn-menu-top { background: var(--gold); border: none; font-weight: bold; border-radius: 5px; cursor: pointer; padding: 5px 10px; }
.level-tag { color: var(--gold); font-weight: bold; font-size: 1.2rem; }

.board-frame { padding: 12px; background: var(--wood-dark); border-radius: 15px; border: 4px solid #000; box-shadow: 0 10px 30px #000; }
.grid { width: 300px; height: 300px; position: relative; background: #000; border-radius: 8px; }

.grid::after {
    content: ''; position: absolute; right: -18px; top: 100px; width: 20px; height: 50px; 
    background: var(--gold); border-radius: 0 8px 8px 0; box-shadow: 0 0 15px var(--gold);
}

.block {
    position: absolute; border-radius: 8px; box-sizing: border-box; border: 2px solid rgba(0,0,0,0.3);
    background: var(--wood); cursor: grab; box-shadow: inset 0 0 10px rgba(255,255,255,0.2);
}
.block-key { background: var(--gold); z-index: 10; border-color: #fff; }

.btn-wood {
    margin: 5px; padding: 12px 20px; background: var(--wood-dark); color: white; border: 1px solid var(--wood);
    border-radius: 8px; font-weight: bold; cursor: pointer;
}
.btn-wood.gold { background: var(--gold); color: #000; }
.btn-wood.skin { background: #000; color: var(--gold); border: 1px solid var(--gold); }

.overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.9); z-index: 100; justify-content: center; align-items: center; }
.modal { background: var(--wood-dark); padding: 25px; border-radius: 20px; border: 3px solid var(--wood); text-align: center; width: 85%; max-width: 320px; }

.level-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 20px 0; max-height: 250px; overflow-y: auto; }
.lvl-btn { aspect-ratio: 1; background: #000; color: var(--gold); border: 2px solid var(--wood); border-radius: 8px; display: flex; align-items: center; justify-content: center; cursor: pointer; }
.lvl-btn.locked { opacity: 0.3; cursor: not-allowed; }

.skin-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.skin-item { padding: 15px; border: 2px solid var(--wood); background: #000; color: white; border-radius: 10px; cursor: pointer; font-weight: bold; }