/* ===== 响应式设计增强 ===== */

/* 超大屏幕 (1536px+) */
@media (min-width: 1536px) {
    .container {
        max-width: 1536px;
    }
    
    .ticker-flip-card {
        width: 280px;
        height: 120px;
    }
}

/* 大屏幕 (1280px - 1535px) */
@media (min-width: 1280px) and (max-width: 1535px) {
    .container {
        max-width: 1280px;
    }
}

/* 中等屏幕/平板横屏 (1024px - 1279px) */
@media (min-width: 1024px) and (max-width: 1279px) {
    .container {
        max-width: 1024px;
    }
    
    .ticker-carousel {
        gap: 60px;
    }
}

/* 平板竖屏 (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .container {
        max-width: 768px;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
    
    /* 侧边栏适配 */
    .sidebar {
        width: 240px;
    }
    
    .main-content {
        margin-left: 240px;
    }
    
    /* 功能按钮调整 */
    .feature-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    /* 3D卡片调整 */
    .ticker-flip-card {
        width: 180px;
        height: 90px;
    }
}

/* 手机横屏/小平板 (640px - 767px) */
@media (min-width: 640px) and (max-width: 767px) {
    /* 侧边栏全屏 */
    .sidebar {
        width: 100%;
        position: fixed;
        z-index: 50;
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    /* 主内容区域 */
    .main-content {
        margin-left: 0 !important;
        padding: 1rem;
    }
    
    /* 欢迎文字调整 */
    .text-3d-container h2 {
        font-size: 1.5rem;
    }
    
    /* 输入区域优化 */
    .input-area {
        padding: 1.5rem;
    }
    
    .input-area textarea {
        font-size: 15px;
    }
}

/* 手机竖屏 (480px - 639px) */
@media (min-width: 480px) and (max-width: 639px) {
    /* 容器调整 */
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* 头部调整 */
    header {
        padding: 0.75rem 1rem;
    }
    
    /* 隐藏部分导航项 */
    .nav-container .nav-link:not(:first-child):not(:last-child) {
        display: none;
    }
    
    /* 欢迎区域 */
    .deepseek-welcome-section {
        padding: 1rem 0;
    }
    
    .text-3d-container h2 {
        font-size: 1.25rem;
        line-height: 1.4;
    }
    
    /* 功能按钮网格 */
    .function-controls {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .feature-btn {
        width: 100%;
        padding: 0.5rem;
        font-size: 0.75rem;
    }
    
    .feature-btn i {
        font-size: 1rem;
    }
    
    /* 3D新闻卡片 */
    .ticker-3d-container {
        height: 80px;
        padding: 15px 0;
    }
    
    .ticker-flip-card {
        width: 100px;
        height: 60px;
    }
    
    .news-content {
        font-size: 10px;
    }
    
    /* 聊天界面 */
    #chatMessages {
        height: calc(100vh - 280px);
        padding: 0.75rem;
    }
    
    .message-item {
        margin-bottom: 0.75rem;
    }
    
    .user-message,
    .ai-message {
        max-width: 90%;
        padding: 0.625rem 0.875rem;
        font-size: 14px;
    }
    
    /* 聊天输入框 */
    #chatModeInput {
        padding: 0.75rem;
    }
    
    #chatModeMessageInput {
        font-size: 14px;
        min-height: 40px;
        max-height: 100px;
    }
}

/* 小手机屏幕 (320px - 479px) */
@media (max-width: 479px) {
    /* 全局字体大小调整 */
    body {
        font-size: 14px;
    }
    
    /* 容器最小边距 */
    .container {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    
    /* 头部精简 */
    header {
        padding: 0.5rem 0.75rem;
        height: 3rem;
    }
    
    .logo-container h1 {
        font-size: 1rem;
    }
    
    /* 仅显示必要的导航 */
    .nav-container {
        display: none;
    }
    
    /* 欢迎文字进一步缩小 */
    .text-3d-container h2 {
        font-size: 1.125rem;
        white-space: normal;
        text-align: center;
    }
    
    .rotating-word-3d {
        font-size: 1.125rem;
    }
    
    /* 输入区域紧凑化 */
    .input-area {
        padding: 1rem;
        border-radius: 16px;
    }
    
    .input-area textarea {
        font-size: 14px;
        min-height: 50px;
    }
    
    /* 功能按钮单列 */
    .function-controls {
        display: flex;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .feature-btn {
        width: 100%;
        justify-content: center;
        padding: 0.625rem;
    }
    
    /* 深度研究控制面板 */
    .deep-research-controls {
        padding: 0.75rem;
        margin-top: 0.5rem;
    }
    
    .deep-research-controls .text-sm {
        font-size: 0.75rem;
    }
    
    /* 3D新闻区域最小化 */
    .ticker-3d-container {
        height: 60px;
        padding: 10px 0;
    }
    
    .ticker-flip-card {
        width: 80px;
        height: 50px;
    }
    
    .ticker-carousel {
        gap: 20px;
    }
    
    /* 聊天消息区域优化 */
    #chatContainer {
        padding: 0;
    }
    
    #chatMessages {
        height: calc(100vh - 240px);
        padding: 0.5rem;
    }
    
    .message-item {
        margin-bottom: 0.5rem;
    }
    
    .user-message,
    .ai-message {
        max-width: 95%;
        padding: 0.5rem 0.75rem;
        font-size: 13px;
        border-radius: 12px;
    }
    
    .message-time {
        font-size: 10px;
    }
    
    /* 底部输入框 */
    #chatModeInput {
        padding: 0.5rem;
        background: rgba(255, 255, 255, 0.95);
    }
    
    .input-wrapper {
        padding: 0.5rem;
    }
    
    #chatModeMessageInput {
        font-size: 13px;
        padding: 0.5rem;
        min-height: 36px;
        max-height: 80px;
    }
    
    .send-button {
        width: 32px;
        height: 32px;
    }
    
    /* 侧边栏优化 */
    .sidebar {
        width: 85vw;
    }
    
    .menu-item {
        padding: 0.625rem;
        font-size: 0.875rem;
    }
    
    .menu-icon {
        width: 24px;
        height: 24px;
        font-size: 1.125rem;
    }
    
    .chat-history-item {
        padding: 0.5rem 0.75rem;
    }
    
    .chat-title {
        font-size: 0.813rem;
    }
    
    /* 底部功能区域隐藏部分 */
    .bottom-links {
        font-size: 0.75rem;
        gap: 0.5rem;
    }
    
    /* Markdown内容优化 */
    .markdown-content {
        font-size: 13px;
        line-height: 1.5;
    }
    
    .markdown-content h1 { font-size: 1.25rem; }
    .markdown-content h2 { font-size: 1.125rem; }
    .markdown-content h3 { font-size: 1rem; }
    
    .markdown-content pre {
        padding: 0.5rem;
        font-size: 12px;
    }
    
    .markdown-content code {
        font-size: 12px;
        padding: 0.125rem 0.25rem;
    }
}

/* 超小屏幕特殊处理 (低于320px) */
@media (max-width: 319px) {
    body {
        font-size: 12px;
        min-width: 280px;
    }
    
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .text-3d-container h2 {
        font-size: 1rem;
    }
    
    .feature-btn span {
        display: none;
    }
    
    .feature-btn {
        padding: 0.5rem;
    }
    
    .feature-btn i {
        font-size: 1.25rem;
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 500px) {
    /* 减少垂直空间占用 */
    header {
        height: 2.5rem;
        padding: 0.25rem 1rem;
    }
    
    .deepseek-welcome-section {
        display: none;
    }
    
    .ticker-3d-container {
        height: 50px;
        padding: 5px 0;
    }
    
    #chatMessages {
        height: calc(100vh - 120px);
    }
    
    .input-area {
        padding: 0.75rem;
    }
    
    #chatModeInput {
        padding: 0.5rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大可点击区域 */
    button, .menu-item, .chat-history-item {
        min-height: 44px;
    }
    
    /* 移除悬停效果 */
    .ticker-flip-card:hover .flip-card-inner {
        transform: none;
    }
    
    /* 简化动画 */
    .ticker-carousel {
        animation: none;
    }
    
    /* 触摸友好的滚动 */
    .chat-messages,
    .sidebar .overflow-y-auto {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* 细边框处理 */
    .sidebar,
    .input-area,
    .feature-btn,
    .chat-history-item {
        border-width: 0.5px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    /* 可以添加深色模式样式 */
}

/* 打印优化 */
@media print {
    .sidebar,
    .ticker-3d-container,
    .input-area,
    .function-controls,
    header,
    footer {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 20px !important;
    }
    
    .chat-messages {
        height: auto !important;
        overflow: visible !important;
    }
    
    .message-item {
        page-break-inside: avoid;
    }
}

/* 安全区域适配 (iPhone X及以上) */
@supports (padding: max(0px)) {
    .sidebar {
        padding-left: max(8px, env(safe-area-inset-left));
        padding-right: max(8px, env(safe-area-inset-right));
    }
    
    header {
        padding-top: max(0.75rem, env(safe-area-inset-top));
    }
    
    #chatModeInput {
        padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
    }
}

/* 折叠屏设备支持 */
@media (min-width: 768px) and (max-width: 1024px) and (min-aspect-ratio: 1/1) {
    .main-content {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    
    .deepseek-welcome-section {
        grid-column: 1;
    }
    
    .deepseek-input-section {
        grid-column: 2;
    }
}