/* 响应式设计 - 现代化多设备适配优化 */

/* 大屏设备优化 (1400px 及以上) */
@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }

    .page-title {
        font-size: 4.5rem;
    }

    .camera-grid {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
        gap: 40px;
    }

    .timeline {
        max-width: 1000px;
    }
}

/* 中等屏幕优化 (1200px - 1399px) */
@media (max-width: 1200px) and (min-width: 992px) {
    .camera-grid {
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 25px;
    }

    .history-content {
        grid-template-columns: 1.8fr 1fr;
        gap: 35px;
    }
}

/* 平板设备 (768px 及以下) */
@media (max-width: 768px) {
    /* 基础布局调整 */
    .container {
        padding: 0 15px;
    }

    /* 导航栏移动端样式 */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(26, 26, 26, 0.95);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: 50px;
        gap: 20px;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu .nav-link {
        font-size: 1.125rem;
        padding: 15px 25px;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* 英雄区域调整 */
    .hero-section {
        padding: 100px 0 60px;
        margin-top: 70px;
    }

    .page-title {
        font-size: 2.5rem;
        line-height: 1.3;
    }

    .page-subtitle {
        font-size: 1.125rem;
        padding: 0 20px;
    }

    /* 内容区域调整 */
    .content-section {
        padding: 40px 20px;
        margin-bottom: 30px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-header h2 {
        font-size: 2.25rem;
    }

    .section-header p {
        font-size: 1rem;
    }

    /* 历史介绍区域 */
    .history-content {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }

    .history-stats {
        flex-direction: row;
        justify-content: center;
        gap: 16px;
    }

    .stat-item {
        padding: 24px;
        min-width: 140px;
    }

    .stat-number {
        font-size: 2.25rem;
    }

    /* 分类标签 - 增强触摸体验 */
    .category-tabs {
        gap: 12px;
        margin-bottom: 32px;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: thin;
        scrollbar-color: var(--primary-orange) transparent;
    }

    .category-tabs::-webkit-scrollbar {
        height: 4px;
    }

    .category-tabs::-webkit-scrollbar-track {
        background: transparent;
    }

    .category-tabs::-webkit-scrollbar-thumb {
        background: var(--primary-orange);
        border-radius: 2px;
    }

    .tab-btn {
        padding: 10px 20px;
        font-size: 0.875rem;
        min-width: 80px;
        flex-shrink: 0;
    }

    /* 相机卡片网格 */
    .camera-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .camera-card {
        margin-bottom: 0;
    }

    .camera-image {
        height: 180px;
    }

    .camera-content {
        padding: 20px;
    }

    .camera-name {
        font-size: 1.25rem;
    }

    .camera-specs {
        font-size: 0.875rem;
    }

    /* 时间线调整 */
    .timeline {
        padding: 10px 0;
    }

    .timeline::before {
        left: 15px;
    }

    .timeline-item {
        flex-direction: column;
        margin-bottom: 30px;
    }

    .timeline-item::before {
        left: 9px;
        top: 15px;
        width: 10px;
        height: 10px;
    }

    .timeline-year {
        min-width: 60px;
        font-size: 1.125rem;
        font-weight: 700;
        margin-right: 0;
        margin-bottom: 10px;
        margin-left: 45px;
        padding: 8px 12px;
        background: var(--surface-primary);
        border: 1px solid var(--primary-orange);
        border-radius: 8px;
        display: inline-block;
        box-shadow: var(--shadow-soft);
    }

    .timeline-content {
        margin-left: 45px;
        padding: 20px;
    }

    .timeline-event {
        font-size: 1rem;
    }

    /* 机型对比 */
    .model-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .model-select {
        width: 100%;
        min-width: auto;
    }

    .vs-text {
        text-align: center;
        margin: 8px 0;
    }

    .comparison-table {
        font-size: 0.875rem;
        overflow-x: auto;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 12px 8px;
    }

    /* FAQ */
    .faq-question {
        padding: 16px 20px;
        font-size: 1rem;
    }

    .faq-answer {
        padding: 20px;
        font-size: 0.875rem;
    }

    /* CTA区域 */
    .cta-section {
        padding: 60px 0;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .cta-section p {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .cta-buttons .btn {
        width: 100%;
        max-width: 280px;
    }

    /* ICP页脚 */
    .footer-content {
        padding: 0 15px;
        gap: 12px;
    }

    .site-info {
        flex-direction: column;
        gap: 8px;
    }

    .compliance-info {
        gap: 6px;
    }

    .icp-info,
    .police-info {
        flex-direction: column;
        gap: 4px;
        text-align: center;
    }

    /* 回到顶部按钮 */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}

/* 小型手机设备 (480px 及以下) */
@media (max-width: 480px) {
    /* 英雄区域 */
    .page-title {
        font-size: 2rem;
    }

    .page-subtitle {
        font-size: 1rem;
        padding: 0 15px;
    }

    /* 统计数据 */
    .history-stats {
        flex-direction: column;
        gap: 12px;
    }

    .stat-item {
        padding: 20px;
        width: 100%;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 1rem;
    }

    /* 相机卡片 */
    .camera-image {
        height: 160px;
    }

    .camera-year {
        top: 12px;
        right: 12px;
        padding: 4px 10px;
        font-size: 0.75rem;
    }

    .camera-content {
        padding: 16px;
    }

    .camera-name {
        font-size: 1.125rem;
    }

    /* 技术规格 */
    .camera-specs {
        padding: 12px;
    }

    .spec-item {
        padding: 6px 0;
        font-size: 0.75rem;
    }

    /* 时间线 */
    .timeline-content {
        margin-left: 40px;
        padding: 16px;
    }

    .timeline-year {
        min-width: 50px;
        margin-left: 40px;
        font-size: 1rem;
        font-weight: 600;
        padding: 6px 10px;
        background: var(--surface-primary);
        border: 1px solid var(--primary-orange);
        border-radius: 6px;
        display: inline-block;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    /* 机型对比表格 */
    .comparison-table {
        font-size: 0.75rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 8px 6px;
    }

    /* FAQ */
    .faq-question {
        padding: 14px 16px;
        font-size: 0.875rem;
    }

    .faq-answer {
        padding: 16px;
        font-size: 0.8rem;
    }

    .faq-model-tag {
        font-size: 0.75rem;
        padding: 3px 8px;
    }

    /* CTA区域 */
    .cta-section h2 {
        font-size: 1.75rem;
    }

    .cta-section p {
        font-size: 0.875rem;
        padding: 0 20px;
    }

    /* 按钮调整 */
    .btn {
        padding: 14px 24px;
        font-size: 0.875rem;
    }

    /* 滚动按钮 */
    .scroll-button {
        padding: 14px 28px;
        font-size: 1rem;
    }

    /* 分类标签 */
    .tab-btn {
        padding: 8px 16px;
        font-size: 0.75rem;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero-section {
        padding: 60px 0 30px;
    }

    .page-title {
        font-size: 2.25rem;
        margin-bottom: 16px;
    }

    .page-subtitle {
        font-size: 1rem;
        margin-bottom: 24px;
    }

    .history-stats {
        flex-direction: row;
    }

    .nav-menu {
        padding-top: 20px;
        height: calc(100vh - 70px);
    }

    .content-section {
        padding: 30px 20px;
    }

    .section-header {
        margin-bottom: 30px;
    }

    /* 横屏模式时间线优化 */
    .timeline-year {
        min-width: 70px;
        margin-left: 40px;
        padding: 6px 12px;
    }

    .timeline-content {
        margin-left: 40px;
        padding: 16px;
    }
}

/* 超宽屏优化 (1600px 及以上) */
@media (min-width: 1600px) {
    .container {
        max-width: 1600px;
    }

    .camera-grid {
        grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
        gap: 50px;
    }

    .page-title {
        font-size: 5rem;
    }

    .timeline {
        max-width: 1200px;
    }
}

/* 可减少动画的用户偏好设置 */
@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;
    }

    .camera-card:hover {
        transform: none !important;
    }

    .btn:hover {
        transform: none !important;
    }

    .back-to-top:hover {
        transform: none !important;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --graphite-black: #0f0f0f;
        --graphite-black-light: #1a1a1a;
        --text-primary: #f0f0f0;
        --text-secondary: #b0b0b0;
    }
}

/* 亮色模式支持 */
@media (prefers-color-scheme: light) {
    :root {
        --graphite-black: #f8f9fa;
        --graphite-black-light: #ffffff;
        --text-primary: #2c3e50;
        --text-secondary: #6c757d;
        --surface-primary: #ffffff;
        --surface-secondary: #f8f9fa;
        --surface-tertiary: #e9ecef;
    }
}

/* 触摸设备优化 */
@media (hover: none) {
    .camera-card:hover {
        transform: none;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }

    .faq-item:hover {
        transform: none;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    }

    .btn:hover {
        transform: none;
    }

    .tab-btn:hover {
        border-color: #444;
        color: #e0e0e0;
    }

    .back-to-top:hover {
        background: #FF6A00;
        transform: none;
    }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .loading-spinner,
    .camera-loading .spinner {
        border-width: 2px;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .nav-toggle,
    .back-to-top,
    .scroll-button,
    #loading-overlay {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .content-section {
        background: white !important;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        page-break-inside: avoid;
    }

    .camera-card,
    .timeline-item,
    .faq-item {
        page-break-inside: avoid;
    }

    .page-title,
    .section-header h2 {
        color: black !important;
    }
}