/* 移动端优化样式 */

/* 通用移动端优化 */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }

    #app {
        border-radius: 15px;
    }

    .main-header {
        padding: 15px;
        flex-direction: column;
        gap: 10px;
    }

    .logo h1 {
        font-size: 20px;
    }

    .logo-icon {
        font-size: 30px;
    }

    .menu-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .menu-card {
        padding: 20px 15px;
    }

    .card-icon {
        font-size: 48px;
    }

    .menu-card h3 {
        font-size: 20px;
    }

    .welcome-section h2 {
        font-size: 24px;
    }

    .welcome-section p {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .main-header {
        padding: 10px;
    }

    .logo h1 {
        font-size: 18px;
    }

    .menu-grid {
        gap: 10px;
    }

    .menu-card {
        padding: 15px 10px;
    }

    .card-icon {
        font-size: 40px;
        margin-bottom: 10px;
    }

    .menu-card h3 {
        font-size: 18px;
        margin-bottom: 5px;
    }

    .menu-card p {
        font-size: 14px;
    }

    .back-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
}

/* 字母页面移动端 */
@media (max-width: 768px) {
    .big-letter {
        font-size: 100px;
    }

    .letter-image {
        font-size: 80px;
    }

    .letter-word {
        font-size: 36px;
    }

    .letter-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 10px;
    }

    .letter-btn {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }

    .letter-actions {
        flex-direction: column;
        align-items: center;
    }

    .action-btn {
        width: 80%;
    }
}

/* 音标页面移动端 */
@media (max-width: 768px) {
    .phonetics-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 15px;
    }

    .phonetic-symbol {
        font-size: 36px;
    }

    .phonetics-tabs {
        flex-direction: column;
        align-items: center;
    }

    .tab-btn {
        width: 80%;
    }
}

/* 单词卡片移动端 */
@media (max-width: 768px) {
    .flashcard-container {
        width: 280px;
        height: 380px;
    }

    .word-image {
        font-size: 80px;
    }

    .word-text {
        font-size: 36px;
    }

    .word-chinese {
        font-size: 30px;
    }

    .card-controls {
        flex-direction: column;
        align-items: center;
    }

    .control-btn {
        width: 80%;
    }
}

/* 游戏页面移动端 */
@media (max-width: 768px) {
    .games-grid {
        grid-template-columns: 1fr;
    }

    .game-card {
        padding: 20px;
    }

    .game-icon {
        font-size: 56px;
    }

    .balloons-container {
        height: 350px;
    }

    .balloon {
        width: 55px;
        height: 70px;
        font-size: 14px;
    }

    .listen-options {
        grid-template-columns: 1fr;
    }

    .match-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sentence-target {
        min-height: 80px;
        padding: 15px;
    }

    .word-chip {
        padding: 10px 15px;
        font-size: 18px;
    }
}

/* 进度页面移动端 */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-card {
        padding: 20px;
    }

    .stat-icon {
        font-size: 36px;
    }

    .stat-number {
        font-size: 32px;
    }

    .badges-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    }
}

/* 触摸优化 */
@media (hover: none) {
    .menu-card:hover,
    .game-card:hover,
    .letter-btn:hover,
    .listen-option:hover {
        transform: none;
    }

    .menu-card:active {
        transform: scale(0.95);
    }

    .game-card:active {
        transform: scale(0.98);
    }

    button, .ripple {
        min-height: 44px; /* Apple推荐的最小触摸目标 */
    }
}

/* 横屏优化 */
@media (orientation: landscape) and (max-height: 500px) {
    .main-header {
        padding: 10px 20px;
    }

    .main-content {
        padding: 20px;
    }

    .menu-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}