/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #0a0a0a;
}
::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Glassmorphism Utilities */
.glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Custom Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.animate-shake {
    animation: shake 0.3s ease-in-out;
}

/* Letter Tile Styles */
.letter-tile {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.letter-tile:active {
    transform: scale(0.95);
}

.letter-tile.selected {
    opacity: 0;
    pointer-events: none;
}

.letter-slot {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    border-radius: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.2s;
}

.letter-slot.filled {
    background: rgba(255, 215, 0, 0.1);
    border-color: #ffd700;
    color: #ffd700;
    border-bottom-width: 0;
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.2);
}

/* Level Grid Item */
.level-item {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.75rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.level-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
}

.level-item.locked {
    opacity: 0.5;
    cursor: not-allowed;
    background: rgba(0, 0, 0, 0.2);
}

.level-item.completed {
    background: rgba(74, 222, 128, 0.1);
    border-color: rgba(74, 222, 128, 0.3);
    color: #4ade80;
}

.level-item.completed::after {
    content: '✓';
    position: absolute;
    bottom: 2px;
    right: 4px;
    font-size: 0.75rem;
}