/* CSS 变量定义 */
:root {
    /* 浅色主题 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --accent-primary: #3b82f6;
    --accent-secondary: #1d4ed8;
    --accent-hover: #2563eb;
    --success-color: #6366f1;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border-color: #475569;
    --accent-primary: #60a5fa;
    --accent-secondary: #3b82f6;
    --accent-hover: #2563eb;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 头部样式 */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.title {
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.title i {
    color: var(--accent-primary);
    -webkit-text-fill-color: var(--accent-primary);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.api-key-button,
.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.api-key-button:hover,
.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-1px);
}

.api-key-button.configured {
    background: var(--success-color);
    color: white;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--bg-primary);
    border-radius: 1rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.close-button {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.close-button:hover {
    background: var(--error-color);
    color: white;
}

.modal-body {
    padding: 1.5rem;
}

.api-key-info {
    background: var(--bg-tertiary);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-primary);
}

.api-key-hint {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.api-key-hint a {
    color: var(--accent-primary);
    text-decoration: none;
}

.api-key-hint a:hover {
    text-decoration: underline;
}

.api-key-warning {
    color: var(--accent-primary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 0.375rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.api-key-warning i {
    color: var(--accent-primary);
}

.api-key-input-group {
    position: relative;
    display: flex;
}

.api-key-input-group .form-input {
    flex: 1;
    padding-right: 3rem;
}

.toggle-visibility {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

.toggle-visibility:hover {
    color: var(--accent-primary);
}

.api-key-options {
    margin: 1rem 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 0.25rem;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 0.875rem;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.save-button,
.test-button {
    flex: 1;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.save-button {
    background: var(--accent-primary);
    color: white;
}

.save-button:hover {
    background: var(--accent-hover);
}

.test-button {
    background: var(--accent-primary);
    color: white;
}

.test-button:hover {
    background: var(--accent-hover);
}

/* 主要内容 */
.main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* 标签页 */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: var(--bg-primary);
    padding: 0.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.tab-button {
    flex: 1;
    background: transparent;
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tab-button:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tab-button.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

/* 标签内容 */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 表单容器 */
.form-container {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.generation-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 表单组 */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label i {
    color: var(--accent-primary);
}

/* 输入框 */
.form-input,
.form-textarea,
.form-select {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* 图片上传区域 */
.image-upload-area {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
}

.image-upload-area:hover {
    border-color: var(--accent-primary);
    background: var(--bg-tertiary);
}

.image-upload-area.dragover {
    border-color: var(--accent-primary);
    background: var(--accent-primary);
    background-opacity: 0.1;
}

.upload-placeholder i {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.upload-placeholder p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.image-preview {
    position: relative;
    display: inline-block;
}

.image-preview img {
    max-width: 300px;
    max-height: 200px;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
}

.remove-image {
    position: absolute;
    top: -0.5rem;
    right: -0.5rem;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.remove-image:hover {
    transform: scale(1.1);
}

/* 范围滑块 */
.form-range {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--bg-tertiary);
    outline: none;
    -webkit-appearance: none;
}

.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.form-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-primary);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-md);
}

.range-value {
    color: var(--accent-primary);
    font-weight: 600;
    margin-left: 0.5rem;
}

/* 高级设置 */
.advanced-settings {
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
}

.advanced-settings summary {
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease;
}

.advanced-settings summary:hover {
    background: var(--border-color);
}

.advanced-settings[open] summary {
    border-bottom: 1px solid var(--border-color);
}

.settings-grid {
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

/* 提交按钮 */
.submit-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-md);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 结果容器 */

/* 生成队列（生成栏） */
.generation-queue {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    margin-bottom: 1.5rem;
}

.queue-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.queue-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    margin: 0;
}

.queue-count {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.queue-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 80px;
}

.empty-queue {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    gap: 0.75rem;
    padding: 1rem;
}

.queue-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    background: var(--bg-secondary);
}

.queue-item .info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.queue-item .title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.queue-item .prompt {
    color: var(--text-secondary);
    font-size: 0.8rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.queue-item .meta {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.queue-progress {
    min-width: 220px;
}

.queue-progress .progress-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
}

.queue-progress .progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
}

.queue-status {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    text-align: center;
    min-width: 72px;
}

.queue-status.pending {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.queue-status.running {
    background: var(--accent-primary);
    color: white;
}

.queue-status.done {
    background: var(--accent-secondary);
    color: white;
}

.queue-status.error {
    background: var(--error-color);
    color: white;
}

/* 移动端优化：生成队列 */
@media (max-width: 768px) {
    .generation-queue {
        padding: 1rem;
    }
    .queue-item {
        grid-template-columns: 1fr;
    }
    .queue-progress {
        min-width: 100%;
    }
}
.result-container {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin-top: 2rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.result-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.clear-button {
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.clear-button:hover {
    background: #dc2626;
}

.result-video {
    width: 100%;
    max-width: 800px;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.download-button {
    background: var(--accent-primary);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* 加载状态 */
.loading-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-content {
    background: var(--bg-primary);
    border-radius: 1rem;
    padding: 3rem;
    text-align: center;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-progress {
    margin-top: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* 视频库样式 */
.video-library-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.video-library-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    margin: 0;
}

.library-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.refresh-button {
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.refresh-button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.video-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.video-library-content {
    min-height: 300px;
}

.loading-library {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-secondary);
    gap: 1rem;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.video-item {
    background: var(--bg-secondary);
    border-radius: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.video-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.video-preview {
    width: 100%;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    background: #000;
}

.video-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.video-filename {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
    word-break: break-all;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.video-size {
    color: var(--accent-primary);
}

.video-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.video-action-btn {
    flex: 1;
    padding: 0.5rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.download-video-btn {
    background: var(--accent-primary);
    color: white;
}

.download-video-btn:hover {
    background: var(--accent-hover);
}

.play-video-btn {
    background: var(--accent-primary);
    color: white;
}

.play-video-btn:hover {
    background: var(--accent-hover);
}

.empty-library {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--text-secondary);
    gap: 1rem;
}

.empty-library i {
    font-size: 3rem;
    color: var(--text-muted);
}

/* 底部 */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    text-align: center;
    color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main {
        padding: 1rem;
    }
    
    .header-content {
        padding: 1rem;
    }
    
    .title {
        font-size: 1.5rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
    
    .settings-grid {
        grid-template-columns: 1fr;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .loading-content {
        margin: 1rem;
        padding: 2rem;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .title {
        font-size: 1.25rem;
    }
    
    .form-container {
        padding: 1rem;
    }
}