/* Reset и базовые стили */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    touch-action: manipulation;
}

/* Экраны */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: flex;
}

/* Главный экран */
#main-screen {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Большая надпись БУКВАЧ на фоне */
#main-screen::before {
    content: 'БУКВАЧ';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(8rem, 30vw, 20rem);
    font-weight: 900;
    color: var(--text-primary);
    opacity: 0.08;
    z-index: 0;
    white-space: nowrap;
    pointer-events: none;
    letter-spacing: -0.02em;
}

.container {
    max-width: 500px;
    width: 100%;
    text-align: center;
    position: relative;
    z-index: 1;
}

.logo {
    display: none;
}

.menu-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.menu-card {
    background: rgba(var(--card-bg-rgb), 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(var(--text-primary-rgb), 0.1);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    max-width: fit-content;
    margin: 0 auto;
}

.menu-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.menu-card:active {
    transform: translateY(0);
}

.menu-icon {
    font-size: 2rem;
}

.menu-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.menu-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stats {
    padding: 1rem;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.bottom-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

.icon-button {
    background: rgba(var(--card-bg-rgb), 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(var(--text-primary-rgb), 0.1);
    border-radius: 12px;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
}

.icon-button:hover {
    transform: translateY(-2px);
    background: rgba(var(--card-bg-rgb), 0.6);
}

/* Игровой экран */
#game-screen {
    flex-direction: column;
}

.game-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--card-bg);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.back-button,
.pause-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.5rem;
}

.game-mode {
    font-size: 1.1rem;
    font-weight: 600;
}

.timer {
    font-size: 1.3rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.game-board {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    gap: 1.5rem;
}

/* Подсказка диагонального слова */
.diagonal-hint {
    display: none;
}

.hint-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hint-word {
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 0.3em;
    color: var(--accent-color);
    font-variant-numeric: tabular-nums;
}

/* Подсказки */
.hint-button {
    background: linear-gradient(135deg, #f7b731 0%, #f39c12 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.4rem 0.8rem;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    box-shadow: 0 2px 6px rgba(247, 183, 49, 0.3);
}

.hint-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(247, 183, 49, 0.4);
}

.hint-button:active:not(:disabled) {
    transform: translateY(0);
}

.hint-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.hint-button.active {
    background: linear-gradient(135deg, #52c234 0%, #47a82c 100%);
    box-shadow: 0 4px 12px rgba(82, 194, 52, 0.3);
}

#hint-count {
    background: rgba(255, 255, 255, 0.3);
    padding: 0.1rem 0.4rem;
    border-radius: 6px;
    min-width: 1.2rem;
    text-align: center;
    font-size: 1rem;
}

/* Сетка */
.grid {
    display: grid;
    gap: 12px;
    padding: 1rem;
}

.grid[data-size="4"] {
    grid-template-columns: repeat(4, 1fr);
}

.grid[data-size="5"] {
    grid-template-columns: repeat(5, 1fr);
}

.grid[data-size="6"] {
    grid-template-columns: repeat(6, 1fr);
}

.grid[data-size="7"] {
    grid-template-columns: repeat(7, 1fr);
}

.cell {
    aspect-ratio: 1;
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.8rem;
    font-weight: 700;
    text-transform: uppercase;
    transition: all 0.15s ease;
    width: 100%;
    min-width: 60px;
    max-width: 180px;
}

.cell.fixed {
    background: var(--fixed-cell-bg);
    color: var(--accent-color);
}

.cell.diagonal {
    background: var(--accent-color);
    color: white;
    font-weight: 900;
    box-shadow: 0 2px 8px rgba(91, 124, 153, 0.4);
}

.cell.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
}

.cell.correct {
    background: var(--success-color);
}

.cell.wrong {
    background: var(--error-color);
}

.cell.hintable {
    cursor: pointer;
    border-color: #f7b731;
    background: rgba(247, 183, 49, 0.1);
    animation: pulse-hint 1.5s ease-in-out infinite;
}

.cell.hintable:hover {
    background: rgba(247, 183, 49, 0.3);
    transform: scale(1.05);
}

@keyframes pulse-hint {
    0%, 100% {
        box-shadow: 0 0 0 rgba(247, 183, 49, 0.4);
    }
    50% {
        box-shadow: 0 0 12px rgba(247, 183, 49, 0.6);
    }
}

/* Клавиатура */
.keyboard {
    padding: 1rem;
    background: var(--card-bg);
}

.keyboard-row {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-bottom: 4px;
}

.key {
    flex: 1;
    max-width: 60px;
    min-height: 52px;
    background: var(--key-bg);
    border: none;
    border-radius: 6px;
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.1s ease;
    color: var(--text-primary);
}

.key:hover {
    background: var(--key-hover-bg);
}

.key:active {
    transform: scale(0.95);
}

.key.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.key.disabled:hover {
    background: var(--key-bg);
}

.key-wide {
    flex: 3;
    max-width: 140px;
}

/* Модальные окна */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.result-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.settings-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
}

/* Правила игры */
.rules-content {
    max-width: 500px;
    text-align: left;
}

.rules-text {
    max-height: 60vh;
    overflow-y: auto;
    margin-bottom: 1.5rem;
}

.rules-text p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.rules-text ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 1.5rem;
}

.rules-text li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

/* Выбор размера */
.size-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1rem;
}

.size-card {
    background: var(--card-bg);
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.size-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.size-card:active {
    transform: translateY(-2px);
}

.size-icon {
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent-color);
}

.size-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Кнопки */
.button {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0.25rem;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 2px solid var(--text-secondary);
}

.button:hover {
    transform: translateY(-2px);
}

.button.primary {
    background: var(--accent-color);
    color: white;
    border: none;
}

/* Уведомления */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: bottom 0.3s ease;
    z-index: 2000;
}

.toast.show {
    bottom: 2rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    .logo {
        font-size: 2.5rem;
    }

    .cell {
        font-size: 3rem;
        max-width: 140px;
    }

    .key {
        font-size: 1.1rem;
        min-height: 48px;
    }

    .grid {
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .cell {
        font-size: 2.4rem;
        max-width: 95px;
        min-width: 55px;
    }

    .key {
        font-size: 1rem;
        min-height: 46px;
        max-width: 48px;
    }

    .grid {
        gap: 8px;
    }
}