/* 响应式设计 - Responsive Design */

/* 基础响应式重置 */
@media (max-width: 1200px) {
    .container {
        max-width: 95%;
        padding: 18px;
    }
}

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        max-width: 90%;
        padding: 16px;
        margin-top: 100px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    .nav-menu {
        gap: 15px;
        padding: 0 15px;
    }
    
    .nav-item {
        padding: 6px 14px;
        font-size: 15px;
    }
}

/* 移动设备 (最大768px) */
@media (max-width: 768px) {
    /* 容器调整 */
    .container {
        margin-top: 120px;
        padding: 15px;
        border-radius: 10px;
        max-width: 95%;
    }
    
    /* 标题调整 */
    h1 {
        font-size: 2rem;
        margin-bottom: 20px;
        text-align: center;
    }
    
    /* 导航菜单垂直布局 */
    .nav-menu {
        flex-direction: column;
        padding: 10px 15px;
        gap: 8px;
        max-height: 140px;
        overflow-y: auto;
        border-radius: 0 0 15px 15px;
        background: rgba(255, 255, 255, 0.98);
    }
    
    .nav-item {
        width: 100%;
        text-align: center;
        min-height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 8px 16px;
        margin: 0;
    }
    
    /* 按钮容器垂直布局 */
    .btn-container,
    .actions,
    .button-group {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        min-width: auto;
        padding: 12px 20px;
        font-size: 16px;
    }
    
    /* 卡片调整 */
    .card {
        padding: 15px;
        margin: 10px 0;
        border-radius: 8px;
    }
    
    /* 结果容器调整 */
    .result-container {
        padding: 20px;
        min-height: 150px;
        margin: 15px 0;
    }
    
    .result-content {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    /* 选择器组调整 */
    .selector-group {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    
    .selector-item {
        width: 100%;
    }
    
    .form-input,
    .form-select {
        font-size: 16px; /* 防止iOS缩放 */
        padding: 12px 16px;
    }
    
    /* 图片容器调整 */
    .image-container {
        margin: 15px 0;
    }
    
    .image-placeholder {
        padding: 30px 15px;
        min-height: 150px;
    }
    
    /* 通知调整 */
    .notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
        font-size: 14px;
    }
    
    /* 模态框调整 */
    .modal-content {
        padding: 20px;
        width: 95%;
        max-height: 85vh;
        margin: 20px;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: 8px;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
    
    /* 进度条调整 */
    .progress {
        height: 6px;
        margin: 8px 0;
    }
}

/* 小屏移动设备 (最大480px) */
@media (max-width: 480px) {
    /* 容器进一步调整 */
    .container {
        padding: 12px;
        margin-top: 120px;
        border-radius: 8px;
    }
    
    /* 标题调整 */
    h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }
    
    /* 导航菜单紧凑布局 */
    .nav-menu {
        padding: 8px 12px;
        gap: 6px;
        max-height: 120px;
    }
    
    .nav-item {
        padding: 6px 12px;
        min-height: 36px;
        font-size: 14px;
    }
    
    /* 按钮调整 */
    .btn {
        padding: 10px 20px;
        font-size: 14px;
        min-height: 44px; /* 触摸友好 */
    }
    
    /* 卡片调整 */
    .card {
        padding: 12px;
        margin: 8px 0;
    }
    
    .card-title {
        font-size: 1.1rem;
    }
    
    /* 结果容器调整 */
    .result-container {
        padding: 15px;
        min-height: 120px;
    }
    
    .result-content {
        font-size: 0.95rem;
    }
    
    /* 表单调整 */
    .form-input,
    .form-select {
        padding: 10px 14px;
        font-size: 16px;
    }
    
    .form-label {
        font-size: 14px;
        margin-bottom: 6px;
    }
    
    /* 图片调整 */
    .image-placeholder {
        padding: 25px 15px;
        min-height: 120px;
    }
    
    .image-placeholder .icon {
        font-size: 2rem;
    }
    
    /* 模态框调整 */
    .modal-content {
        padding: 15px;
        width: 98%;
        margin: 10px;
    }
    
    .modal-title {
        font-size: 1.25rem;
    }
    
    /* 通知调整 */
    .notification {
        padding: 12px 16px;
        font-size: 13px;
    }
    
    /* 标签调整 */
    .tag {
        padding: 3px 10px;
        font-size: 0.75rem;
    }
}

/* 超小屏设备 (最大360px) */
@media (max-width: 360px) {
    /* 容器最小化 */
    .container {
        padding: 10px;
        margin-top: 120px;
    }
    
    /* 标题最小化 */
    h1 {
        font-size: 1.6rem;
        margin-bottom: 12px;
    }
    
    /* 导航菜单最小化 */
    .nav-menu {
        padding: 6px 10px;
        gap: 4px;
        max-height: 100px;
    }
    
    .nav-item {
        padding: 5px 10px;
        min-height: 32px;
        font-size: 13px;
    }
    
    /* 按钮最小化 */
    .btn {
        padding: 8px 16px;
        font-size: 13px;
        min-height: 40px;
    }
    
    /* 卡片最小化 */
    .card {
        padding: 10px;
        margin: 6px 0;
    }
    
    /* 结果容器最小化 */
    .result-container {
        padding: 12px;
        min-height: 100px;
    }
    
    .result-content {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    /* 表单最小化 */
    .form-input,
    .form-select {
        padding: 8px 12px;
        font-size: 16px;
    }
    
    /* 图片最小化 */
    .image-placeholder {
        padding: 20px 10px;
        min-height: 100px;
    }
    
    .image-placeholder .icon {
        font-size: 1.5rem;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .container {
        margin-top: 80px;
        padding: 10px;
    }
    
    .nav-menu {
        max-height: 80px;
        padding: 5px 10px;
    }
    
    .nav-item {
        min-height: 30px;
        padding: 4px 8px;
        font-size: 12px;
    }
    
    h1 {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }
    
    .result-container {
        min-height: 80px;
        padding: 10px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 12px;
        min-height: 32px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增加触摸目标大小 */
    .btn,
    .nav-item,
    .form-input,
    .form-select {
        min-height: 44px;
    }
    
    /* 移除悬停效果 */
    .btn:hover,
    .nav-item:hover,
    .card:hover {
        transform: none;
    }
    
    /* 添加触摸反馈 */
    .btn:active,
    .nav-item:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .container {
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }
    
    .card {
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    }
    
    .btn {
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    }
}

/* 减少动画偏好 */
@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;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
    }
    
    .container {
        background: rgba(45, 55, 72, 0.95);
        color: #e2e8f0;
    }
    
    .nav {
        background: rgba(45, 55, 72, 0.95);
    }
    
    .nav-item {
        color: #e2e8f0;
        background: rgba(102, 126, 234, 0.2);
        border-color: rgba(102, 126, 234, 0.3);
    }
    
    .nav-item:hover {
        background: rgba(102, 126, 234, 0.3);
    }
    
    .card {
        background: rgba(45, 55, 72, 0.8);
        color: #e2e8f0;
    }
    
    .result-container {
        background: rgba(45, 55, 72, 0.9);
        color: #e2e8f0;
    }
    
    .form-input,
    .form-select {
        background: rgba(45, 55, 72, 0.8);
        color: #e2e8f0;
        border-color: #4a5568;
    }
    
    .form-input:focus,
    .form-select:focus {
        border-color: #667eea;
    }
    
    h1,
    .card-title,
    .form-label {
        color: #e2e8f0;
    }
}

/* 打印样式 */
@media print {
    .nav,
    .btn-container,
    .actions,
    .button-group,
    .notification,
    .modal {
        display: none !important;
    }
    
    .container {
        margin-top: 0;
        box-shadow: none;
        background: white;
        color: black;
    }
    
    body {
        background: white;
    }
    
    .result-container,
    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}