:root {
    /* Wood theme colors - dark, rich wood tones with texture */
    --bg-color: #2c1810;
    --text-color: #f5f1e8;
    --text-muted: #d4c4b0;
    --header-bg: #3d2a1a;
    --footer-bg: #2c1810;
    --board-bg: #1a0f08;
    --border-color: #5d4037;
    --primary-color: #8d6e63;
    --primary-hover: #a1887f;
    --secondary-color: #6d4c41;
    --secondary-hover: #5d4037;
    --error-color: #dc3545;
    --error-hover: #c82333;
    --success-color: #28a745;
    --success-hover: #218838;
    --neutral-color: #6c757d;
    --neutral-hover: #5a6268;
    --cell-bg: #1a0f08;
    --cell-border: #5d4037;
    --cell-hover: #2c1810;
    --block-color: #8d6e63;
    --block-border: #6d4c41;
    --grid-line: #5d4037;
    --highlight: #4e342e;
    --card-bg: #3d2a1a;
    --accent-color: #a1887f;
    --clear-glow-color: #00aaff;
}

/* Wood texture effects */
body {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(93, 64, 55, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(93, 64, 55, 0.15) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-color) 0%, var(--header-bg) 100%);
}

.game-board-container {
    background-image: 
        linear-gradient(45deg, transparent 25%, rgba(93, 64, 55, 0.08) 25%, rgba(93, 64, 55, 0.08) 50%, transparent 50%, transparent 75%, rgba(93, 64, 55, 0.08) 75%),
        linear-gradient(135deg, var(--board-bg) 0%, var(--cell-bg) 100%);
    background-size: 20px 20px, 100% 100%;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.block-palette {
    background-image: 
        linear-gradient(90deg, transparent 25%, rgba(93, 64, 55, 0.08) 25%, rgba(93, 64, 55, 0.08) 50%, transparent 50%, transparent 75%, rgba(93, 64, 55, 0.08) 75%),
        linear-gradient(135deg, var(--header-bg) 0%, var(--cell-bg) 100%);
    background-size: 15px 15px, 100% 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Dark wood theme enhancements */
.modal {
    background-color: rgba(0, 0, 0, 0.7);
}

.modal-content {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    color: var(--text-color);
}

.modal-header {
    background: var(--card-bg);
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.modal-body {
    color: var(--text-color);
}

.btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.2s ease;
}

.btn:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--secondary-hover) 100%);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--accent-color) 100%);
}

/* Hint button override for readability on wood theme */
.btn-hint {
    background: linear-gradient(135deg, #ffd700, #ffed4e) !important;
    color: #2c1810 !important; /* Dark wood color for better contrast */
    border: 2px solid #ffc107 !important;
    font-weight: 600 !important;
}

.btn-hint:hover:not(:disabled) {
    background: linear-gradient(135deg, #ffed4e, #ffd700) !important;
    color: #2c1810 !important;
}

.score-display, .level-display, .combo-display {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Difficulty modal improvements for wood theme */
.difficulty-option h3 {
    color: var(--text-color);
}

.difficulty-option p {
    color: var(--text-muted);
}

.difficulty-option li {
    color: var(--text-color);
}

.difficulty-option li::before {
    color: var(--accent-color);
    font-weight: bold;
}

.difficulty-option.selected li::before {
    color: white;
}

.difficulty-settings h3 {
    color: var(--text-color);
}

.setting-item label {
    color: var(--text-color);
}