/* 文鉴 - 响应式样式文件 */

/* 平板设备适配 (768px - 1024px) */
@media (max-width: 1024px) {
    :root { --page-padding: 1.5rem; }
    /* 取消桌面端的超大组间距，允许换行并缩小间距 */
    .essay-type-selector {
        flex-wrap: wrap;
        gap: 0.75rem 1rem; /* 行间距/列间距 */
    }
    .essay-type-selector .form-group { margin: 0; }
    .essay-type-selector .form-group .form-select { width: 160px; }
    .essay-type-selector .topic-group { flex: 1 1 100%; min-width: 0; max-width: 100%; }
    .main-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem var(--page-padding);
    }
    
    .header-content { padding: 0 var(--page-padding); }
    
    .app-title {
        font-size: 1.8rem;
    }
    
    .section-header {
        padding: 1.25rem 1.5rem;
    }
    
    .input-container,
    .analysis-container {
        padding: 1.5rem;
    }
    
    .features-preview {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .export-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 极窄屏优化：功能卡片单行横向滚动，减少首屏高度占用 */
@media (max-width: 480px) {
    .features-preview {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 0.25rem;
    }
    .features-preview .feature-item {
        display: inline-flex;
        width: 130px;
        margin-right: 0.5rem;
        vertical-align: top;
    }
}

/* 手机设备适配 (最大768px) */
@media (max-width: 768px) {
    :root { --page-padding: 1rem; }
    .main-content {
        padding: 1rem var(--page-padding);
        gap: 1rem;
    }
    
    .header-content {
        padding: 0 var(--page-padding);
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-actions {
        justify-content: center;
    }
    
    .app-title {
        font-size: 1.6rem;
    }
    
    .app-subtitle {
        font-size: 0.85rem;
    }
    
    .section-header {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .section-header h2 {
        font-size: 1.3rem;
    }
    
    .input-container,
    .analysis-container {
        padding: 1rem;
    }
    
    .essay-type-selector,
    .model-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    /* 覆盖：保持模型选择与开始分析同一行，按钮靠右 */
    .model-selector {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }
    .model-selector label { flex: 0 0 auto; min-width: 52px; margin-right: 0.25rem; }
    .model-selector .form-select {
        flex: 0 1 60%;
        min-width: 180px;
        max-width: 360px;
        width: auto;
        margin-right: 0.75rem; /* 与开始分析按钮的合理距离 */
    }
    .model-selector #analyzeBtn {
        margin-left: auto;
        flex: 0 0 auto;
    }
    .model-selector .btn { width: auto; }
    .model-selector .btn.btn-icon { width: 48px; min-width: 48px; height: 48px; }
    
    .essay-type-selector label,
    .model-selector label {
        font-size: 0.9rem;
    }
    
    .form-select {
        min-width: auto;
        width: 100%;
    }
    
    .essay-textarea {
        min-height: 167px; /* 在200px基础上再减1/6 */
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .input-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .model-selector {
        order: -1;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
    }

    /* 保持图标按钮在小屏下不变形 */
    .header-actions .btn.btn-icon,
    .input-actions .btn.btn-icon,
    .modal .btn.btn-icon,
    .modal .export-btn {
        width: 48px;
        min-width: 48px;
        height: 48px;
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
    }

    /* 导出模态的图标按钮在小屏避免被拉伸且稍大些更易点触 */
    #exportModal .export-btn {
        width: 56px;
        min-width: 56px;
        height: 56px;
        border-radius: 50%;
        padding: 0;
    }
    
    .welcome-message {
        padding: 0.75rem 1rem 1.5rem; /* 减小顶部间距 */
    }
    
    .welcome-icon {
        font-size: 3rem;
    }
    
    .welcome-message h3 {
        font-size: 1.3rem;
    }
    
    .welcome-message p {
        font-size: 1rem;
    }
    
    .features-preview {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .feature-item {
        padding: 0.75rem;
    }
    
    .feature-icon {
        font-size: 1.5rem;
    }
    
    /* 模态框移动端适配 */
    .modal-content {
        width: 95%;
        max-height: 90vh;
        margin: 1rem;
    }

    /* 分析进度在小屏保持单行文本，进度条单独一行，整体更清晰 */
    .analysis-progress {
        width: 100% !important; /* 覆盖桌面端 260px 限制 */
        display: grid !important;
        grid-template-columns: auto 1fr auto; /* 图标 | 文本 | 清空按钮 */
        grid-template-rows: auto auto;       /* 第一行文案，第二行进度条 */
        align-items: center;
        column-gap: 0.5rem;
        row-gap: 0.5rem;
    }
    .analysis-progress .progress-icon {
        grid-column: 1;
        grid-row: 1;
        justify-self: start;
    }
    .analysis-progress .progress-text {
        grid-column: 2;
        grid-row: 1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .analysis-progress .progress-bar {
        grid-column: 1 / span 3; /* 进度条占满整行 */
        grid-row: 2;
        width: 100% !important;
    }
    .analysis-progress + .btn,
    .analysis-progress #clearAnalysisBtn,
    .analysis-progress .btn.btn-icon {
        grid-column: 3;
        grid-row: 1;
        justify-self: end;
    }
    
    .modal-header {
        padding: 1rem;
    }
    
    .modal-header h3 {
        font-size: 1.2rem;
    }
    
    .modal-body {
        padding: 1rem;
    }
    
    .modal-footer {
        padding: 1rem;
        flex-direction: column-reverse;
    }
    /* 图标型底部按钮在小屏保持同一行展示 */
    #settingsModal .modal-footer,
    #historyModal .modal-footer,
    #exportModal .modal-footer {
        flex-direction: row;
        justify-content: flex-end;
        align-items: center;
        gap: 0.75rem;
        flex-wrap: nowrap;
    }
    
    .modal-footer .btn {
        margin-bottom: 0.5rem;
    }
    
    .export-options {
        grid-template-columns: 1fr;
    }
    
    .export-btn {
        padding: 1.25rem;
    }
    
    /* 设置表单移动端优化 */
    .api-config {
        margin-bottom: 1rem;
    }
    
    .api-config label {
        font-size: 0.9rem;
    }
    
    .form-input {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    /* 分析结果移动端优化 */
    .analysis-section-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .analysis-section-item h3 {
        font-size: 1.2rem;
    }
    
    .error-item,
    .suggestion-item {
        padding: 0.75rem;
    }
}

/* 小屏手机设备适配 (最大480px) */
@media (max-width: 480px) {
    .main-content {
        padding: 0.75rem;
    }
    
    .header-content {
        padding: 0 0.75rem;
    }
    
    .app-title {
        font-size: 1.4rem;
    }
    
    .section-header {
        padding: 0.75rem;
    }
    
    .section-header h2 {
        font-size: 1.2rem;
    }
    
    .input-container,
    .analysis-container {
        padding: 0.75rem;
    }
    
    .essay-textarea {
        min-height: 138px; /* 在166px基础上再减1/6 */
        padding: 1rem;
    }
    
    .btn {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
    }
    
    .welcome-message {
        padding: 0.5rem 0.75rem 1rem; /* 再次收紧顶部间距 */
    }
    
    .welcome-icon {
        font-size: 2.5rem;
    }
    
    .welcome-message h3 {
        font-size: 1.2rem;
    }
    
    .features-preview {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .feature-item {
        padding: 0.5rem;
        flex-direction: row;
        text-align: left;
    }
    
    .feature-icon {
        font-size: 1.25rem;
    }
    
    .modal-content {
        width: 98%;
        max-height: 95vh;
    }
    
    .modal-header {
        padding: 0.75rem;
    }
    
    .modal-body {
        padding: 0.75rem;
    }
    
    .modal-footer {
        padding: 0.75rem;
    }
}

/* 横屏模式优化 */
@media (max-height: 500px) and (orientation: landscape) {
    .app-header {
        position: static;
    }
    
    .main-content {
        grid-template-columns: 1fr 1fr;
        padding: 1rem;
    }
    
    .essay-textarea {
        min-height: 111px; /* 在133px基础上再减1/6 */
    }
    
    .welcome-message {
        padding: 1rem;
    }
    
    .welcome-icon {
        font-size: 2rem;
    }
    
    .features-preview {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 高分辨率屏幕优化 */
@media (min-width: 1400px) {
    .main-content {
        max-width: 1600px;
        grid-template-columns: 1.2fr 1fr;
    }
    
    .app-title {
        font-size: 2.2rem;
    }
    
    .section-header h2 {
        font-size: 1.6rem;
    }
}

/* 打印样式 */
@media print {
    .app-header,
    .header-actions,
    .input-actions,
    .modal,
    .loading-overlay {
        display: none !important;
    }
    
    .main-content {
        grid-template-columns: 1fr;
        max-width: none;
        padding: 0;
        gap: 1rem;
    }
    
    .input-section,
    .analysis-section {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .essay-textarea {
        border: 1px solid #ddd;
        background: white;
    }
    
    .analysis-results {
        page-break-inside: avoid;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --surface-color: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #a0a0a0;
        --border-color: #404040;
    }
    
    .essay-textarea,
    .form-select,
    .form-input {
        background: var(--surface-color);
        color: var(--text-primary);
        border-color: var(--border-color);
    }
    
    .section-header {
        background: linear-gradient(135deg, #2d2d2d 0%, #3a3a3a 100%);
    }
    
    .analysis-section-item,
    .feature-item {
        background: #3a3a3a;
    }
    
    .error-item {
        background: #3a2a2a;
    }
    
    .suggestion-item {
        background: #2a3a3a;
    }
}

/* 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;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px; /* iOS推荐的最小触摸目标 */
    }
    
    .form-select,
    .form-input {
        min-height: 44px;
    }
    
    .modal-close {
        min-width: 44px;
        min-height: 44px;
    }
    
    /* 移除悬停效果 */
    .btn:hover,
    .feature-item:hover,
    .tooltip:hover::after {
        transform: none;
        box-shadow: none;
        opacity: initial;
        visibility: initial;
    }
}

/* 可访问性增强 */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-light: 0 2px 10px rgba(0,0,0,0.3);
        --shadow-medium: 0 4px 20px rgba(0,0,0,0.4);
    }
    
    .btn-primary {
        background: #0066cc;
    }
    
    .btn-secondary {
        border-width: 3px;
    }
}