* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background-color: #1a1a1a;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    color: #e0e0e0;
}

.game-container {
    background-color: #2a2a2a;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
    padding: 20px;
    max-width: 1000px;
    width: 100%;
    box-sizing: border-box;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

h1 {
    color: #e0e0e0;
    margin: 0;
}

.score-container {
    display: flex;
    gap: 20px;
}

.score, .level, .lines {
    background-color: #3a3a3a;
    padding: 10px 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    font-weight: bold;
    color: #e0e0e0;
}

.game-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.game-board {
    background-color: #222222;
    border: 2px solid #444;
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    grid-template-rows: repeat(20, 1fr);
    width: 300px;
    height: 600px;
    position: relative;
}

.cell {
    border: 1px solid #333;
    position: relative;
}

.letter-block {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    color: white;
    font-size: 16px;
    border-radius: 2px;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.3);
}

.side-panel {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.game-controls-wrapper {
    display: flex;
    width: 100%;
    max-width: 800px;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
}

.next-piece-container {
    background-color: #333333;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    width: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.next-piece {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    width: 90px;
    height: 90px;
    margin: 5px auto 0;
}

.controls, .dictionary-info {
    background-color: #333333;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

.controls {
    flex: 2 1 auto;
    min-width: 120px;
    font-size: 0.9em;
}

.dictionary-info {
    flex: 3 1 auto;
    min-width: 120px;
    margin-bottom: 20px;
    max-height: 300px;
    overflow-y: auto;
}

.controls h3, .next-piece-container h3, .dictionary-info h3 {
    margin-bottom: 10px;
    color: #e0e0e0;
}

.controls p {
    margin: 3px 0;
    font-size: 13px;
}

.game-buttons {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 120px;
    background-color: #333333;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s;
    font-size: 0.9em;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

button:hover {
    background-color: #45a049;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
}

#pause-button, #reset-button {
    background-color: #e53935;
}

#pause-button:hover, #reset-button:hover {
    background-color: #c62828;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: #2a2a2a;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    color: #e0e0e0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #e0e0e0;
}

.modal-content p {
    margin-bottom: 20px;
    font-size: 18px;
}

#play-again-button {
    padding: 12px 24px;
    font-size: 16px;
}

#word-list {
    max-height: 300px;
    overflow-y: auto;
    font-size: 14px;
}

#word-list p {
    margin: 5px 0;
    padding: 3px 0;
    border-bottom: 1px solid #444;
    color: #e0e0e0;
}

/* Letter block colors based on Scrabble point values - darker and more vibrant */
.points-1 { background-color: #3a70d1; } /* Darker Blue */
.points-2 { background-color: #5a9a30; } /* Darker Green */
.points-3 { background-color: #d18700; } /* Darker Orange */
.points-4 { background-color: #7a50c2; } /* Darker Purple */
.points-5 { background-color: #d14430; } /* Darker Red */
.points-8 { background-color: #108f88; } /* Darker Teal */
.points-10 { background-color: #9a1010; } /* Darker Firebrick */

/* Animation for clearing words */
@keyframes clear {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.8; background-color: #ffdd00; }
    100% { transform: scale(0); opacity: 0; }
}

@keyframes highlight {
    0% { transform: scale(1); box-shadow: 0 0 0px rgba(255, 255, 0, 0); }
    50% { transform: scale(1.1); box-shadow: 0 0 15px rgba(255, 255, 0, 0.8); }
    100% { transform: scale(1); box-shadow: 0 0 0px rgba(255, 255, 0, 0); }
}

.clearing {
    animation: clear 0.8s forwards;
}

.highlighting {
    animation: highlight 1s forwards;
    z-index: 10;
}

/* Touch controls */
.touch-controls {
    display: none;
    margin: 10px 0;
    width: 100%;
    max-width: 300px;
}

.touch-row {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
}

.touch-button {
    width: 70px;
    height: 70px;
    background-color: #333333;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    color: #e0e0e0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    user-select: none;
    cursor: pointer;
}

.touch-button:active {
    transform: scale(0.95);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Responsive design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .game-container {
        padding: 15px;
    }
    
    .game-board {
        width: 250px;
        height: 500px;
    }
    
    .next-piece {
        width: 80px;
        height: 80px;
    }
    
    .header {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .score-container {
        justify-content: center;
    }
    
    .touch-controls {
        display: block;
    }
}

@media (max-width: 600px) {
    .game-controls-wrapper {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }
    
    .game-board {
        width: 200px;
        height: 400px;
    }
    
    .next-piece-container,
    .game-buttons {
        width: 80px;
    }
    
    .next-piece {
        width: 60px;
        height: 60px;
    }
    
    .next-piece-container {
        padding: 8px;
    }
    
    .game-buttons button {
        padding: 6px;
        font-size: 0.8em;
    }
    
    .touch-controls {
        margin-top: 5px;
    }
    
    .touch-button {
        width: 60px;
        height: 60px;
        font-size: 26px;
    }
}

@media (max-width: 400px) {
    .game-board {
        width: 180px;
        height: 360px;
    }
    
    .next-piece-container,
    .game-buttons {
        width: 70px;
    }
    
    .next-piece-container {
        padding: 5px;
    }
    
    .next-piece {
        width: 50px;
        height: 50px;
        margin: 3px auto 0;
    }
    
    .next-piece-container h3 {
        font-size: 0.9em;
        margin-bottom: 3px;
    }
    
    .game-buttons button {
        padding: 5px;
        font-size: 0.75em;
    }
    
    .touch-button {
        width: 55px;
        height: 55px;
        font-size: 24px;
    }
}