/* ============================================
   My Aviation - Responsive CSS
   响应式样式 — 儿童友好版
   ============================================ */

/* ============================================
   大屏桌面 ( > 1200px )
   ============================================ */
@media (min-width: 1201px) {
    .aircraft-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    /* 探索飞机世界：6 张卡片一行显示 */
    .category-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* ============================================
   中等桌面 ( 992px - 1200px )
   ============================================ */
@media (max-width: 1200px) {
    .aircraft-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* 探索飞机世界：中等屏 3 列 */
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

    .carousel-card {
        flex-direction: column;
    }

    .carousel-image {
        flex: 0 0 auto;
        min-height: 250px;
    }
}

/* ============================================
   平板 ( 768px - 991px )
   ============================================ */
@media (max-width: 991px) {
    .aircraft-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 导航栏 */
    .primary-nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-lg);
        overflow-y: auto;
        z-index: 999;
    }

    .primary-nav.active {
        display: flex;
    }

    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-xs);
    }

    .nav-menu > li {
        width: 100%;
    }

    .nav-menu > li > a {
        width: 100%;
        justify-content: flex-start;
        padding: 1rem 1.5rem;
        font-size: 1.15rem;
    }

    .nav-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: var(--spacing-lg);
        display: none;
        width: 100%;
    }

    .nav-menu li.menu-open > .sub-menu {
        display: block;
    }

    .nav-menu > li.menu-item-has-children {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }

    .nav-menu > li.menu-item-has-children > a {
        flex: 1;
        width: auto;
    }

    .nav-menu .submenu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        height: 48px;
        font-size: 0.9rem;
        border-radius: var(--radius-full);
        transition: transform var(--transition-fast);
    }

    .nav-menu li.menu-open > .submenu-toggle {
        transform: rotate(180deg);
    }

    .nav-menu > li.menu-item-has-children > a::after {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Hero */
    .hero-stats {
        gap: var(--spacing-md);
    }

    .hero-stat {
        min-width: 110px;
        padding: var(--spacing-md);
    }

    .hero-stat-number {
        font-size: 1.8rem;
    }

    .hero-search-wrapper {
        border-radius: var(--radius-lg);
        padding: 0.4rem;
    }

    .hero-search-icon {
        left: 1rem;
        font-size: 1rem;
    }

    .hero-search-input {
        padding: 0 0.8rem 0 2.8rem;
        font-size: 0.95rem;
    }

    .hero-search-btn {
        width: 44px;
        height: 44px;
        font-size: 0.95rem;
    }

    .hero-search-tags a {
        font-size: 0.8rem;
        padding: 0.2rem 0.7rem;
    }

    /* 分类网格 */
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* 轮播 */
    .carousel-info {
        padding: var(--spacing-lg);
    }

    /* 详情页 */
    .section-title-aircraft {
        font-size: 1.3rem;
    }

    .fun-params-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .params-table th {
        width: 150px;
    }

    /* 工具栏 */
    .archive-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }

    /* 底部 */
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-about {
        grid-column: 1 / -1;
    }

    /* 雷达地图 */
    #radar-map {
        height: 450px;
    }

    .radar-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .radar-info {
        justify-content: center;
    }

    /* 游乐园入口 */
    .quick-access-grid {
        grid-template-columns: 1fr;
    }

    /* 互动区 */
    .interactive-tabs {
        flex-direction: column;
        align-items: stretch;
    }

    .interactive-tab {
        justify-content: center;
    }

    /* 冷知识 */
    .fun-fact-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: var(--spacing-xl);
    }

    .fun-fact-icon {
        margin-left: 0;
        margin-top: -3.5rem;
    }

    .fun-fact-ribbon {
        left: 50%;
        transform: translateX(-50%) rotate(-3deg);
    }

    .fun-fact-date {
        right: 50%;
        transform: translateX(50%) rotate(3deg);
    }
}

/* ============================================
   手机 ( < 768px )
   ============================================ */
@media (max-width: 767px) {
    :root {
        --spacing-3xl: 2.5rem;
        --spacing-2xl: 2rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    /* 标题 */
    h1 { font-size: 1.7rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.15rem; }

    /* 冷知识：日期贴纸隐藏，避免与丝带重叠 */
    .fun-fact-date { display: none; }

    .fun-fact-card { padding-top: var(--spacing-2xl); }

    .fun-fact-icon {
        width: 96px;
        height: 96px;
        margin-top: -4rem;
        font-size: 2.4rem;
    }

    /* 网格布局 */
    .aircraft-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    /* Hero */
    .hero-section {
        padding: var(--spacing-2xl) 0 var(--spacing-xl);
    }

    .hero-badge {
        font-size: 0.85rem;
        padding: 0.4rem 1rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-stat {
        min-width: 140px;
    }

    /* 轮播 */
    .carousel-card {
        flex-direction: column;
    }

    .carousel-image {
        flex: 0 0 auto;
        min-height: 200px;
    }

    .carousel-info {
        padding: var(--spacing-md);
    }

    .carousel-prev,
    .carousel-next {
        width: 44px;
        height: 44px;
        font-size: 1rem;
    }

    /* 详情页 */
    .aircraft-detail-section {
        padding: var(--spacing-md);
    }

    .aircraft-detail-meta {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .fun-params-grid {
        grid-template-columns: 1fr;
    }

    .params-table {
        display: block;
    }

    .params-table thead,
    .params-table tbody,
    .params-table tr,
    .params-table th,
    .params-table td {
        display: block;
        width: 100%;
    }

    .params-table tr {
        margin-bottom: var(--spacing-md);
        border: 2px solid var(--color-cloud-2);
        border-radius: var(--radius-sm);
        padding: var(--spacing-sm);
    }

    .params-table th {
        width: 100%;
        background: var(--color-cloud);
        border-bottom: 2px solid var(--color-cloud-2);
        padding: var(--spacing-sm);
    }

    .params-table td {
        padding: var(--spacing-sm);
        border-bottom: none;
    }

    /* 冷知识 */
    .fun-facts-box {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    /* 底部 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-about {
        grid-column: 1;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-menu a {
        justify-content: center;
    }

    .footer-contact li {
        justify-content: center;
    }

    /* 回到顶部 */
    .back-to-top {
        width: 48px;
        height: 48px;
        bottom: 1rem;
        right: 1rem;
    }

    /* 工具栏 */
    .archive-toolbar {
        padding: var(--spacing-md);
    }

    .filter-group {
        width: 100%;
        justify-content: space-between;
    }

    .filter-select {
        flex: 1;
    }

    /* 搜索表单 */
    .search-form-wrapper {
        flex-direction: column;
        border-radius: var(--radius-md);
        padding: var(--spacing-sm);
    }

    .search-form-icon {
        display: none;
    }

    .search-form-input {
        padding: 0 1rem;
        text-align: center;
    }

    .search-form-submit {
        width: 100%;
    }

    /* 雷达 */
    #radar-map {
        height: 350px;
    }

    .radar-info {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    /* 404 */
    .error-404-code {
        font-size: 4rem;
    }

    .error-404-actions {
        flex-direction: column;
    }

    .error-404-actions .btn {
        width: 100%;
    }

    /* 拼图 */
    .puzzle-info {
        justify-content: center;
    }

    .puzzle-board {
        max-width: 100%;
    }

    /* 分类标签 */
    .category-tabs {
        justify-content: center;
    }

    /* 面包屑 */
    .breadcrumb ul {
        justify-content: center;
    }

    /* 互动 */
    .interactive-tabs {
        flex-direction: column;
    }

    /* 答题 */
    .quiz-question {
        font-size: 1.1rem;
    }

    .quiz-option {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }

    .quiz-result-score {
        font-size: 2.5rem;
    }
}

/* ============================================
   小手机 ( < 480px )
   ============================================ */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .archive-title {
        font-size: 1.8rem;
    }

    .logo-text {
        font-size: 1.15rem;
    }

    .quiz-question {
        font-size: 1rem;
    }

    .quiz-option {
        padding: 0.6rem 0.8rem;
        font-size: 0.85rem;
    }

    .quiz-result-score {
        font-size: 2rem;
    }

    .hero-stat {
        min-width: 120px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .hero-stat-number {
        font-size: 1.5rem;
    }

    .hero-stat-label {
        font-size: 0.85rem;
    }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .breadcrumb,
    .back-to-top,
    .header-search-bar,
    .mobile-menu-toggle,
    .header-icon-btn,
    .carousel-prev,
    .carousel-next,
    .carousel-dots,
    .archive-toolbar,
    .archive-pagination,
    .related-aircraft-section {
        display: none !important;
    }

    .aircraft-detail-hero {
        color: var(--color-text-1);
        background: none;
    }

    .aircraft-detail-hero-bg {
        display: none;
    }

    .aircraft-detail-title,
    .aircraft-detail-name-en,
    .aircraft-detail-tagline,
    .meta-value {
        color: var(--color-text-1);
    }
}

/* ============================================
   减少动画（可访问性）
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   高对比度模式
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --color-text-1: #000000;
        --color-text-2: #333333;
        --color-border: #666666;
    }

    .aircraft-card,
    .aircraft-detail-section,
    .quiz-container,
    .puzzle-container {
        border: 3px solid var(--color-border);
    }
}