.sudoku-game-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 15px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    min-height: 60px;
}

.timer {
    font-size: 18px;
    font-weight: bold;
    color: var(--primary-color);
    min-width: 80px;
    text-align: center;
    font-family: 'Courier New', monospace;
}

.difficulty {
    font-size: 16px;
    color: var(--tg-theme-hint-color);
    min-width: 80px;
    text-align: center;
}

.lives-container {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 120px;
    justify-content: center;
}

.lives-label {
    font-size: 14px;
    color: var(--tg-theme-hint-color);
    font-weight: 500;
}

.lives {
    display: flex;
    gap: 4px;
}

.life {
    font-size: 18px;
    transition: all 0.3s ease;
}

.life.lost {
    opacity: 0.3;
    transform: scale(0.8);
}

.life.lost::before {
    content: '💔';
    position: absolute;
    animation: lifeLost 0.5s ease-out;
}

@keyframes lifeLost {
    0% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% { 
        transform: scale(0.8);
        opacity: 0.3;
    }
}

.game-area {
    background: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 0;
    margin-bottom: 20px;
    position: relative;
}

.sudoku-board {
    display: grid;
    grid-template-columns: repeat(9, 1fr);
    grid-template-rows: repeat(9, 1fr);
    gap: 2px;
    background: var(--tg-theme-secondary-bg-color);
    padding: 10px;
    border-radius: var(--border-radius);
    width: 100%;
    height: 100%;
    aspect-ratio: 1;
}

.sudoku-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--tg-theme-bg-color);
    border: 1px solid var(--tg-theme-hint-color);
    font-size: 18px;
    font-weight: bold;
    color: var(--tg-theme-text-color);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    border-radius: 4px;
}

/* Границы для зон 3x3 */
.sudoku-cell:nth-child(3n) {
    border-right: 3px solid var(--tg-theme-text-color);
}

.sudoku-cell:nth-child(n+19):nth-child(-n+27),
.sudoku-cell:nth-child(n+46):nth-child(-n+54) {
    border-bottom: 3px solid var(--tg-theme-text-color);
}

.sudoku-cell:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.sudoku-cell.selected {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 0 10px rgba(46, 204, 113, 0.5);
}

.sudoku-cell.given {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    font-weight: bold;
    cursor: default;
}

.sudoku-cell.given:hover {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    transform: none;
}

.sudoku-cell.error {
    background: var(--secondary-color) !important;
    color: white !important;
    animation: shake 0.5s ease-in-out;
}

.sudoku-cell.correct {
    background: var(--accent-color);
    color: white;
    animation: correctPulse 0.3s ease-out;
}

.sudoku-cell.just-filled {
    animation: cellFill 0.2s ease-out;
}

.sudoku-cell.highlight {
    background: rgba(52, 152, 219, 0.3);
}

.sudoku-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.number-btn {
    width: 45px;
    height: 45px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--primary-color);
    color: white;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

.number-btn:hover {
    background: var(--accent-color);
    transform: scale(1.1);
}

.number-btn:active {
    transform: scale(0.95);
}

.action-btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    background: var(--accent-color);
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.action-btn:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.action-btn:active {
    transform: translateY(0);
}

.action-btn.danger {
    background: var(--secondary-color);
}

.action-btn.danger:hover {
    background: #c0392b;
}

.action-btn.notes-mode {
    background: var(--accent-color);
    color: white;
}

.cell-notes {
    position: absolute;
    top: 2px;
    left: 2px;
    right: 2px;
    bottom: 2px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    font-size: 8px;
    color: var(--tg-theme-hint-color);
}

.note-number {
    display: flex;
    align-items: center;
    justify-content: center;
}

.rating-section {
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-top: 20px;
    box-shadow: var(--box-shadow);
}

.rating-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    text-align: center;
    color: var(--tg-theme-text-color);
}

.rating-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.rating-table th,
.rating-table td {
    padding: 10px;
    text-align: center;
    border-bottom: 1px solid var(--tg-theme-hint-color);
}

.rating-table th {
    background: var(--primary-color);
    color: white;
    font-weight: bold;
}

.rating-table tr:hover {
    background: rgba(52, 152, 219, 0.1);
}

.rating-tables {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.rating-table-container {
    background: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    padding: 15px;
}

.rating-table-container h3 {
    text-align: center;
    margin-bottom: 15px;
    color: var(--tg-theme-text-color);
    font-size: 16px;
}

.difficulty-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--tg-theme-bg-color);
    border-radius: var(--border-radius);
    padding: 30px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--box-shadow);
}

.modal-content h2 {
    margin-bottom: 25px;
    color: var(--tg-theme-text-color);
    font-size: 24px;
}

.difficulty-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.difficulty-option {
    background: var(--tg-theme-secondary-bg-color);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    padding: 20px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    color: var(--tg-theme-text-color);
}

.difficulty-option:hover {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    transform: scale(1.02);
}

.difficulty-option.selected {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border-color: var(--tg-theme-button-color);
}

/* Модальное окно окончания игры */
.game-over-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.game-over-icon {
    font-size: 48px;
    text-align: center;
    margin-bottom: 20px;
}

.game-over-modal h2 {
    color: var(--tg-theme-text-color);
    text-align: center;
    margin-bottom: 15px;
}

.game-over-modal p {
    color: var(--tg-theme-hint-color);
    text-align: center;
    margin-bottom: 25px;
}

.game-over-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.action-btn.secondary {
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    border: 1px solid var(--tg-theme-hint-color);
}

.difficulty-icon {
    font-size: 32px;
    margin-bottom: 10px;
}

.difficulty-name {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 5px;
}

.difficulty-desc {
    font-size: 14px;
    opacity: 0.8;
}

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

@media (max-width: 600px) {
    .sudoku-game-container {
        padding: 10px;
    }
    
    .sudoku-cell {
        font-size: 16px;
    }
    
    .number-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .action-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .modal-content {
        padding: 20px;
        margin: 20px;
    }
    
    .difficulty-option {
        padding: 15px;
    }
    
    .difficulty-icon {
        font-size: 24px;
    }
    
    .difficulty-name {
        font-size: 16px;
    }
    
    .difficulty-desc {
        font-size: 12px;
    }
}

/* Анимации для улучшения игрового опыта */
@keyframes correctPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes cellFill {
    0% { 
        transform: scale(0.8);
        opacity: 0.7;
    }
    100% { 
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes numberAppear {
    0% { 
        transform: scale(0);
        opacity: 0;
    }
    100% { 
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes winCelebration {
    0% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.05) rotate(1deg); }
    50% { transform: scale(1.1) rotate(0deg); }
    75% { transform: scale(1.05) rotate(-1deg); }
    100% { transform: scale(1) rotate(0deg); }
}

/* Улучшенные стили для кнопок */
.number-btn {
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.number-btn:active {
    transform: scale(0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.number-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.number-btn:active::before {
    width: 100px;
    height: 100px;
}

/* Анимация для заполненных ячеек */
.sudoku-cell.filled {
    animation: numberAppear 0.3s ease-out;
}

/* Анимация победы */
.sudoku-board.win {
    animation: winCelebration 0.6s ease-out;
}