/**
 * AI PPT 生成 - 样式文件
 */

/* ========== 步骤指示器 ========== */
.steps-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 2rem;
    padding: 1rem;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.step-number {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.3s ease;
}

.step.active .step-number {
    background: var(--primary);
    color: white;
}

.step.completed .step-number {
    background: var(--success);
    color: white;
}

.step-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.step.active .step-label {
    color: var(--primary);
    font-weight: 500;
}

.step-line {
    width: 60px;
    height: 2px;
    background: var(--border-color);
    margin: 0 0.5rem;
    margin-bottom: 1.5rem;
}

/* ========== 创作路径卡片 ========== */
.creation-paths {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.path-card {
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.path-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.path-card.active {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
}

.path-card i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    display: block;
}

.path-card h3 {
    font-size: 1rem;
    margin: 0 0 0.5rem 0;
    color: var(--text-primary);
}

.path-card p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin: 0;
}

/* ========== 输入区域 ========== */
.input-section {
    margin-top: 1.5rem;
}

.input-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.topic-textarea {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
}

.topic-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.topic-textarea::placeholder {
    color: var(--text-tertiary);
}

/* ========== 文件上传区域 ========== */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-tertiary);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
}

.upload-area.has-file {
    border-style: solid;
    border-color: var(--success);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    display: block;
}

.upload-area p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.upload-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-top: 1rem;
}

.file-details {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-details i {
    font-size: 1.25rem;
    color: var(--primary);
}

.file-name {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

.file-size {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.btn-parse {
    margin-top: 1rem;
    width: 100%;
}

.file-parse-result {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.parse-success {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--success);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.parse-success i {
    font-size: 1rem;
}

.parsed-preview {
    margin-top: 0.75rem;
}

.preview-text {
    max-height: 150px;
    overflow-y: auto;
    padding: 0.75rem;
    background: var(--bg-primary);
    border-radius: 6px;
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
}

.outline-detected {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: rgba(var(--primary-rgb), 0.1);
    border-radius: 6px;
    color: var(--primary);
    font-size: 0.8125rem;
}

.outline-detected i {
    font-size: 1rem;
}

/* ========== 设置网格 ========== */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.setting-item label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.setting-item select {
    padding: 0.625rem 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
}

.setting-item select:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========== 积分预估 ========== */
.credits-estimate {
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.estimate-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    font-size: 0.875rem;
}

.estimate-row .credits {
    color: var(--primary);
    font-weight: 500;
}

.estimate-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    font-weight: 600;
}

.estimate-total .credits {
    color: var(--primary);
    font-size: 1rem;
}

/* ========== 按钮样式 ========== */
.btn-generate {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
}

.btn-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-group .btn-primary,
.btn-group .btn-secondary {
    flex: 1;
    min-width: 120px;
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-small:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.btn-text {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 0.875rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-text:hover {
    text-decoration: underline;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-icon:hover {
    color: var(--primary);
    background: var(--bg-tertiary);
}

/* ========== 大纲编辑器 ========== */
.outline-editor {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.page-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
}

.page-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.page-badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: 4px;
    background: var(--primary);
    color: white;
}

.page-badge.cover {
    background: #6366f1;
}

.page-badge.section {
    background: #8b5cf6;
}

.page-badge.ending {
    background: #ec4899;
}

.page-number {
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex: 1;
}

.page-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.page-title-input,
.page-subtitle-input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.page-title-input {
    font-weight: 600;
}

.page-subtitle-input {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.page-title-input:focus,
.page-subtitle-input:focus {
    outline: none;
    border-color: var(--primary);
}

.page-points {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-left: 0.5rem;
}

.point-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.point-bullet {
    color: var(--primary);
    font-weight: bold;
}

.point-item input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    background: var(--bg-primary);
    border: 1px solid transparent;
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.8125rem;
}

.point-item input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ========== 页面预览网格 ========== */
.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.5rem;
}

.page-preview {
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.page-preview:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.preview-image {
    aspect-ratio: 16 / 9;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

.image-placeholder.error {
    color: var(--danger);
}

.image-placeholder i {
    font-size: 1.5rem;
}

.preview-info {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.preview-info .page-number {
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.preview-info .page-title {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.preview-actions {
    display: flex;
    gap: 0.25rem;
}

/* ========== 进度徽章 ========== */
.badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    color: var(--text-secondary);
    margin-left: auto;
}

/* ========== 导出信息 ========== */
.export-info {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.export-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ========== 弹窗样式 ========== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-content.modal-lg {
    max-width: 640px;
}

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

.modal-header h3 {
    margin: 0;
    font-size: 1.125rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-close-modal {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.btn-close-modal:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

.refine-textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.875rem;
    line-height: 1.5;
    resize: vertical;
}

.refine-textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.edit-preview {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.edit-preview img {
    width: 100%;
    display: block;
}

/* ========== 加载遮罩 ========== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-spinner.small {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    font-size: 1rem;
}

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

/* ========== 历史列表 ========== */
.history-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}

.history-item:hover {
    background: var(--bg-tertiary);
}

.history-item i {
    color: var(--primary);
}

.history-title {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-meta {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .steps-indicator {
        padding: 0.75rem;
    }

    .step-line {
        width: 30px;
    }

    .creation-paths {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }

    .pages-grid {
        grid-template-columns: 1fr;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-group .btn-primary,
    .btn-group .btn-secondary {
        width: 100%;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }
}