/* IMDG系统移动端优化样式 */
/* 专门针对iPhone和其他移动设备优化 */
/* 确保PC端体验不变 */

/* iPhone和移动设备专用样式 */
@media (max-width: 768px) {
    /* 基础移动端优化 */
    * {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        user-select: none;
    }
    
    /* 允许文本选择 */
    input, textarea, .search-input, .form-control {
        -webkit-user-select: text;
        user-select: text;
    }

    /* 容器优化 */
    .container {
        padding: 10px;
        max-width: 100%;
    }

    /* 头部优化 */
    .header {
        padding: 15px 0;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .header h1 {
        font-size: 20px;
        line-height: 1.3;
    }

    .header .subtitle {
        font-size: 12px;
    }

    .header-nav {
        gap: 10px;
    }

    .header-nav-link {
        padding: 10px 16px;
        font-size: 14px;
        border-radius: 6px;
    }

    .header-nav-btn {
        padding: 10px 16px;
        font-size: 14px;
        border-radius: 6px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 搜索区域优化 */
    .search-section {
        padding: 20px 15px;
        margin-bottom: 15px;
    }

    .search-title {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .search-form {
        gap: 12px;
    }

    .search-input-container {
        flex-direction: row;
        gap: 8px;
        align-items: stretch;
    }

    .search-input {
        padding: 14px 16px;
        font-size: 16px; /* 防止iPhone缩放 */
        border-radius: 8px;
        flex: 1;
    }

    .search-btn {
        padding: 14px 16px;
        font-size: 16px;
        border-radius: 8px;
        flex-shrink: 0;
        min-width: 70px;
        max-width: 85px;
    }

    /* 搜索建议优化 */
    .search-suggestions {
        max-height: 200px;
        border-radius: 0 0 8px 8px;
        width: calc(100% - 95px); /* 减去按钮宽度和间距 */
    }

    /* 快速搜索按钮优化 - 更紧凑的布局 */
    .quick-search {
        gap: 6px;
        margin-top: 15px;
        flex-wrap: wrap;
    }

    .quick-btn {
        padding: 6px 10px;
        font-size: 12px;
        border-radius: 16px;
        min-width: 70px;
        min-height: 32px;
        flex-shrink: 0;
    }

    /* 搜索结果优化 */
    .results-section {
        margin-bottom: 15px;
    }

    .results-header {
        padding: 15px;
    }

    .results-title {
        font-size: 15px;
    }

    .results-content {
        padding: 15px;
    }

    /* 危险货物卡片优化 */
    .danger-goods-card {
        flex-direction: column;
        margin-bottom: 15px;
    }

    .hazard-labels-section {
        min-width: auto;
        border-right: none;
        border-bottom: 1px solid #e9ecef;
        padding: 20px 15px;
    }

    .hazard-labels {
        flex-direction: row;
        gap: 20px;
        justify-content: center;
    }

    .hazard-label {
        width: 60px;
        height: 60px;
        cursor: pointer;
    }

    /* 卡片详情优化 */
    .card-details {
        grid-template-columns: 1fr;
        gap: 12px;
        padding: 15px;
    }

    .detail-item {
        padding: 8px 0;
    }

    .detail-label {
        font-size: 13px;
        margin-bottom: 4px;
    }

    .detail-value {
        font-size: 14px;
        line-height: 1.4;
    }

    /* 弹窗优化 */
    .modal-content {
        width: 95%;
        max-height: 85vh;
        margin: 20px auto;
        border-radius: 12px;
    }

    .modal-header {
        padding: 15px 20px;
    }

    .modal-title {
        font-size: 16px;
    }

    .modal-close {
        font-size: 24px;
        padding: 5px;
    }

    .modal-body {
        padding: 15px 20px;
        max-height: 60vh;
        overflow-y: auto;
    }

    /* 欢迎信息优化 */
    .welcome-message {
        padding: 40px 20px;
    }

    .welcome-message h3 {
        font-size: 18px;
        margin-bottom: 12px;
    }

    .welcome-message p {
        font-size: 14px;
        margin-bottom: 8px;
    }

    /* 加载和错误状态优化 */
    .loading, .no-results {
        padding: 30px 20px;
        text-align: center;
        font-size: 14px;
    }

    /* 免责声明优化 */
    .disclaimer-content {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        padding: 15px;
    }

    .disclaimer-icon {
        align-self: center;
        font-size: 24px;
    }

    .disclaimer-text h4 {
        justify-content: center;
        font-size: 14px;
        margin-bottom: 8px;
    }

    .disclaimer-text p {
        font-size: 12px;
        line-height: 1.4;
    }
}

/* iPhone SE 和超小屏幕优化 */
@media (max-width: 375px) {
    .container {
        padding: 8px;
    }

    .header h1 {
        font-size: 18px;
    }

    .search-section {
        padding: 15px 12px;
    }

    .search-input {
        padding: 12px 14px;
    }

    .search-btn {
        padding: 12px 16px;
    }

    /* 超小屏幕的快速搜索按钮更紧凑 */
    .quick-search {
        gap: 4px;
    }

    .quick-btn {
        padding: 5px 8px;
        font-size: 11px;
        min-width: 60px;
        min-height: 28px;
    }

    .hazard-label {
        width: 50px;
        height: 50px;
    }

    .modal-content {
        width: 98%;
        margin: 10px auto;
    }
}

/* iPhone 横屏优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .header {
        padding: 10px 0;
    }

    .header-content {
        flex-direction: row;
        text-align: left;
        gap: 20px;
    }

    .search-form {
        flex-direction: row;
        gap: 10px;
    }

    .search-btn {
        width: auto;
        white-space: nowrap;
    }

    .hazard-labels {
        gap: 15px;
    }

    .hazard-label {
        width: 50px;
        height: 50px;
    }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    /* 触摸设备专用样式 */
    .search-btn, .quick-btn, .header-nav-link {
        min-height: 44px; /* iOS推荐的最小触摸目标 */
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .suggestion-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .hazard-label {
        min-width: 44px;
        min-height: 44px;
    }

    /* 增加触摸反馈 */
    .search-btn:active, .quick-btn:active, .header-nav-link:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }

    .suggestion-item:active {
        background-color: #e3f2fd;
    }

    .hazard-label:active {
        transform: rotate(-45deg) scale(0.95);
    }
}

/* 安全区域适配（iPhone X及以后机型） */
@supports (padding: max(0px)) {
    .header {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
    }

    .container {
        padding-left: max(10px, env(safe-area-inset-left));
        padding-right: max(10px, env(safe-area-inset-right));
    }

    .modal-content {
        margin-left: max(10px, env(safe-area-inset-left));
        margin-right: max(10px, env(safe-area-inset-right));
    }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hazard-label {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    /* 保持浅色主题，但优化对比度 */
    .search-input {
        background-color: #f8f9fa;
        border-color: #dee2e6;
    }

    .modal-content {
        background-color: #ffffff;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 打印样式 */
@media print {
    .header, .search-section, .quick-search, .modal-overlay {
        display: none !important;
    }

    .results-section {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .danger-goods-card {
        break-inside: avoid;
        margin-bottom: 20px;
    }
}