/* Sudoku-Spiel Styles */

.game-container {
    max-width: 600px;
    margin: 2rem auto;
    text-align: center;
    background-color: #1a1a1a;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

h1 {
    color: #9146ff;
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.game-info {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #ffffff;
    flex-wrap: wrap;
    gap: 1rem;
}

.difficulty label {
    margin-right: 0.5rem;
}

.difficulty select {
    padding: 0.5rem;
    background-color: #2a2a2a;
    color: #ffffff;
    border: 1px solid #9146ff;
    border-radius: 4px;
    font-size: 1rem;
}

.sudoku-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    gap: 0;
    max-width: 450px;
    margin: 0 auto 1.5rem auto;
    border: 3px solid #9146ff;
    background-color: #2a2a2a;
}

.sudoku-cell {
    width: 50px;
    height: 50px;
    background-color: #1a1a1a;
    border: 1px solid #444;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #ffffff;
    cursor: pointer;
    transition: background-color 0.2s ease;
    box-sizing: border-box;
}

.sudoku-cell:hover:not(.fixed) {
    background-color: #2a2a2a;
}

.sudoku-cell.fixed {
    background-color: #2a2a2a;
    color: #9146ff;
    cursor: default;
}

.sudoku-cell.selected {
    background-color: #9146ff;
    color: #ffffff;
}

.sudoku-cell.error {
    background-color: #ff4444;
    color: #ffffff;
}

.sudoku-cell.correct {
    background-color: #32cd32;
    color: #ffffff;
}

/* Border für 3x3 Blöcke */
.sudoku-cell:nth-child(3n) {
    border-right: 2px solid #9146ff;
}

.sudoku-cell:nth-child(n+19):nth-child(-n+27),
.sudoku-cell:nth-child(n+46):nth-child(-n+54) {
    border-bottom: 2px solid #9146ff;
}

.game-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.game-controls button {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
    background-color: #9146ff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.game-controls button:hover {
    background-color: #772ce8;
}

.game-controls button:disabled {
    background-color: #555;
    cursor: not-allowed;
}

/* Nummern-Pad */
.number-pad {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    max-width: 300px;
    margin: 1rem auto;
}

.number-btn {
    padding: 0.8rem;
    font-size: 1.2rem;
    background-color: #2a2a2a;
    color: #ffffff;
    border: 2px solid #9146ff;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.number-btn:hover {
    background-color: #9146ff;
    transform: scale(1.05);
}

.number-btn.clear {
    grid-column: span 2;
    background-color: #ff4444;
    border-color: #ff4444;
}

.number-btn.clear:hover {
    background-color: #cc0000;
}

/* Responsive */
@media (max-width: 600px) {
    .sudoku-cell {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .sudoku-board {
        max-width: 315px;
    }
}