/**
 * 响应式设计增强样式
 * 支持 PC (1200px+)、平板 (768-1199px)、手机 (<768px)
 */

/* ============================================
   基础响应式设置
   ============================================ */

/* 平板设备 (768px - 1199px) */
@media (max-width: 1199px) {
    .header-inner {
        padding: 0 15px;
    }
    
    .nav {
        gap: 25px;
    }
    
    .main-content {
        padding: 20px 15px;
    }
    
    .content-container {
        gap: 20px;
    }
    
    .sidebar {
        width: 200px;
    }
}

/* 手机设备 (< 768px) */
@media (max-width: 767px) {
    /* 头部导航 */
    .header {
        position: relative;
    }
    
    .header-inner {
        height: 60px;
        padding: 0 15px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .logo i {
        font-size: 22px;
    }
    
    .logo span {
        display: none;
    }
    
    .nav {
        gap: 20px;
    }
    
    .nav a {
        font-size: 14px;
    }
    
    .header-right {
        gap: 10px;
    }
    
    .user-score {
        display: none;
    }
    
    .btn-upload,
    .btn-login {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    /* Hero区域 */
    .hero {
        margin-top: 0;
        padding: 40px 15px 30px;
    }
    
    .hero h1 {
        font-size: 22px;
    }
    
    .hero p {
        font-size: 14px;
    }
    
    .hero-search {
        max-width: 100%;
        padding: 0 10px;
    }
    
    .hero-search input {
        padding: 12px 45px 12px 15px;
        font-size: 14px;
    }
    
    /* 主内容布局 */
    .main-content {
        padding: 15px;
    }
    
    .content-container {
        flex-direction: column;
    }
    
    /* 侧边栏 */
    .sidebar {
        width: 100%;
        order: 2;
    }
    
    .category-section,
    .tags-section {
        margin-bottom: 15px;
    }
    
    .category-section h3,
    .tags-section h3 {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .category-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .category-list li {
        margin: 0;
    }
    
    .category-list li a {
        padding: 6px 12px;
        background: #f5f5f5;
        border-radius: 20px;
        font-size: 13px;
        display: inline-block;
    }
    
    .category-list li.active a {
        background: #ff6b6b;
        color: #fff;
    }
    
    .tags-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .tags-list .tag {
        margin: 0;
        padding: 4px 10px;
        font-size: 12px;
    }
    
    /* 内容区域 */
    .content-area {
        order: 1;
    }
    
    /* 筛选器 */
    .filters-container {
        padding: 15px;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        margin-bottom: 15px;
    }
    
    .filter-group h4 {
        font-size: 13px;
        min-width: auto;
    }
    
    .filter-options {
        width: 100%;
        gap: 6px;
    }
    
    .filter-option {
        padding: 5px 12px;
        font-size: 12px;
    }
    
    .color-option {
        width: 28px;
        height: 28px;
    }
    
    .color-dot {
        width: 18px;
        height: 18px;
    }
    
    .sort-options {
        width: 100%;
        margin-left: 0;
        justify-content: flex-start;
        flex-wrap: wrap;
    }
    
    .sort-option {
        padding: 5px 12px;
        font-size: 12px;
    }
    
    .view-toggle {
        margin-left: auto;
    }
    
    /* 图集网格 */
    .album-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .album-card {
        border-radius: 8px;
    }
    
    .album-cover {
        height: 140px;
    }
    
    .album-count {
        padding: 4px 8px;
        font-size: 11px;
    }
    
    .album-info {
        padding: 10px;
    }
    
    .album-title {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .album-meta {
        font-size: 11px;
    }
    
    .album-author img {
        width: 20px;
        height: 20px;
    }
    
    /* 图片瀑布流 */
    .image-masonry {
        column-count: 2;
        column-gap: 10px;
    }
    
    .masonry-item {
        margin-bottom: 10px;
    }
    
    /* 分页 */
    .pagination-wrapper {
        margin-top: 20px;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .pagination li a,
    .pagination li span {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    /* 底部 */
    .footer {
        padding: 30px 15px 20px;
    }
    
    .footer-top {
        flex-direction: column;
        gap: 25px;
    }
    
    .footer-brand,
    .footer-links {
        width: 100%;
    }
    
    .footer-brand h3 {
        font-size: 18px;
    }
    
    .footer-links h4 {
        font-size: 14px;
        margin-bottom: 10px;
    }
    
    .footer-links a {
        font-size: 13px;
    }
    
    .footer-bottom {
        margin-top: 20px;
        padding-top: 15px;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
}

/* ============================================
   移动端Footer优化
   ============================================ */
@media (max-width: 768px) {
    /* 简化版Footer - 适合移动端 */
    .footer {
        padding: 15px !important;
        background: #f5f5f5 !important;
        color: #666 !important;
        border-top: 1px solid #e8e8e8;
    }
    
    .footer .copyright {
        margin: 0;
        padding: 0;
        font-size: 12px;
        line-height: 1.6;
        text-align: center;
        color: #999;
    }
    
    .footer .copyright a {
        color: #666;
        text-decoration: none;
        display: inline-block;
        margin-top: 5px;
    }
}

/* 小屏手机 (< 480px) */
@media (max-width: 479px) {
    .album-grid {
        grid-template-columns: 1fr;
    }
    
    .image-masonry {
        column-count: 1;
    }
    
    .filter-options {
        gap: 5px;
    }
    
    .filter-option {
        padding: 4px 10px;
        font-size: 11px;
    }
}

/* ============================================
   图集详情页响应式
   ============================================ */

@media (max-width: 1199px) {
    .detail-container {
        padding: 15px;
    }
    
    .detail-main {
        gap: 20px;
    }
    
    .detail-sidebar {
        width: 280px;
    }
}

@media (max-width: 767px) {
    .detail-container {
        padding: 10px;
    }
    
    .detail-main {
        flex-direction: column;
    }
    
    .detail-content,
    .detail-sidebar {
        width: 100%;
    }
    
    .detail-header {
        padding: 15px;
    }
    
    .detail-title {
        font-size: 18px;
    }
    
    .detail-meta {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .gallery-main {
        height: 250px;
    }
    
    .gallery-thumbs {
        gap: 8px;
    }
    
    .gallery-thumbs img {
        width: 60px;
        height: 60px;
    }
    
    .action-bar {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .btn-like,
    .btn-share,
    .btn-back {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    .detail-sidebar {
        order: 2;
    }
    
    .author-card,
    .related-albums {
        padding: 15px;
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
}

@media (max-width: 479px) {
    .gallery-main {
        height: 200px;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   模态框响应式
   ============================================ */

@media (max-width: 767px) {
    .modal-content {
        width: 95%;
        max-height: 90vh;
        margin: 20px auto;
    }
    
    .modal-header {
        padding: 15px;
    }
    
    .modal-header h3 {
        font-size: 16px;
    }
    
    .modal-body {
        padding: 15px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-group label {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .form-control {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    .btn-submit,
    .btn-default {
        padding: 12px 20px;
        font-size: 14px;
    }
}

/* ============================================
   触摸优化
   ============================================ */

@media (hover: none) and (pointer: coarse) {
    /* 触摸设备优化 */
    .album-card:hover,
    .masonry-item:hover {
        transform: none;
    }
    
    .filter-option {
        min-height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .btn-like,
    .btn-share,
    .btn-back {
        min-height: 44px;
    }
    
    /* 增加点击区域 */
    .nav a {
        padding: 10px 5px;
    }
    
    .category-list li a {
        padding: 10px 15px;
    }
    
    .tags-list .tag {
        padding: 8px 14px;
    }
}

/* ============================================
   横屏模式优化
   ============================================ */

@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 30px 15px 20px;
    }
    
    .hero h1 {
        font-size: 20px;
    }
    
    .modal-content {
        max-height: 95vh;
    }
}

/* ============================================
   打印样式
   ============================================ */

@media print {
    .header,
    .sidebar,
    .action-bar,
    .footer,
    .modal {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .content-container {
        display: block;
    }
    
    .content-area {
        width: 100%;
    }
    
    .album-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   暗色模式支持 (可选)
   ============================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #2d2d2d;
        --text-primary: #e0e0e0;
        --text-secondary: #a0a0a0;
        --border-color: #404040;
    }
}

/* ============================================
   减少动画 (无障碍)
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   高对比度模式 (无障碍)
   ============================================ */

@media (prefers-contrast: high) {
    .filter-option.active,
    .btn-like,
    .btn-login,
    .btn-upload {
        border: 2px solid currentColor;
    }
    
    .album-card {
        border: 1px solid #333;
    }
}