/*
 * [INPUT]: public/admin/editor.html - 编辑器页面结构与控件类名
 * [INPUT]: public/admin/assets/css/editor/theme.css 的 [POS]: 主题基础覆盖层
 * [INPUT]: public/admin/assets/css/editor/layout.css 的 [POS]: 页面布局层
 * [INPUT]: public/admin/assets/css/editor/components.css 的 [POS]: 组件细节层
 * [INPUT]: public/admin/assets/css/editor/ai.css 的 [POS]: AI 功能样式层
 * [OUTPUT]: 统一设计令牌与控件尺寸规范
 * [POS]: 编辑器样式系统收敛层（最后加载，统一黑白风格与组件一致性）
 *
 * [自指声明]
 * 1. 一旦我被更新，必须更新本文件 Header
 * 2. 影响外部接口则更新所属 folder/CLAUDE.md
 * 3. 架构级变动则更新根目录 CLAUDE.md
 * 4. 若依赖的文件 POS 变化，需检查本文件 INPUT 是否仍然准确
 *
 * [PROTOCOL]: 变更时更新此头部，然后检查 CLAUDE.md
 */

:root {
    --ui-bg: #ffffff;
    --ui-surface: #ffffff;
    --ui-surface-muted: #fafafa;
    --ui-fg: #111111;
    --ui-muted: #666666;
    --ui-border: #e5e7eb;
    --ui-border-strong: #111111;
    --ui-focus-ring: 0 0 0 3px rgba(17, 17, 17, 0.14);
    --ui-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --ui-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
    --ui-radius-sm: 8px;
    --ui-radius-md: 10px;
    --ui-radius-lg: 12px;
    --ui-control-height: 36px;
    --ui-control-height-sm: 30px;
    --ui-font-size: 14px;
}

body {
    color: var(--ui-fg);
    font-size: var(--ui-font-size);
}

.editor-container,
.editor-sidebar,
.editor-main {
    background: var(--ui-bg);
}

.sidebar-section,
.cover-section,
.ai-assistant-panel,
.resource-drop-zone,
.ai-chat-panel,
.ai-history-list,
.editor-inline-diff,
#upload-progress-panel,
.modal-content {
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius-lg);
    background: var(--ui-surface);
    box-shadow: none;
}

.section-title {
    color: var(--ui-fg);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.form-group label {
    color: var(--ui-muted);
    font-size: 12px;
    font-weight: 600;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group textarea,
.new-category-input,
.category-select,
.ai-provider-select,
.ai-model-input,
#aiChatInput {
    width: 100%;
    min-height: var(--ui-control-height);
    padding: 8px 10px;
    border: 1px solid var(--ui-border);
    border-radius: var(--ui-radius-md);
    background: #fff;
    color: var(--ui-fg);
    font-size: 14px;
    line-height: 1.45;
}

.form-group textarea,
#aiChatInput {
    min-height: 76px;
}

.form-group input[type="text"]:focus,
.form-group input[type="date"]:focus,
.form-group textarea:focus,
.new-category-input:focus,
.category-select:focus,
.ai-provider-select:focus,
.ai-model-input:focus,
#aiChatInput:focus {
    outline: none;
    border-color: var(--ui-border-strong);
    box-shadow: var(--ui-focus-ring);
}

.btn,
.cover-upload-btn,
.cover-remove-btn,
.ai-action-btn,
.ai-run-btn,
.ai-history-restore,
.btn-cancel,
.btn-primary,
.btn-secondary,
.btn-success,
.upload-retry-btn {
    min-height: var(--ui-control-height);
    padding: 0 12px;
    border-radius: var(--ui-radius-md);
    border: 1px solid var(--ui-border-strong);
    background: #fff;
    color: var(--ui-fg);
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, opacity 0.18s ease;
}

.btn:hover,
.cover-upload-btn:hover,
.cover-remove-btn:hover,
.ai-action-btn:hover,
.ai-run-btn:hover,
.ai-history-restore:hover,
.btn-cancel:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-success:hover,
.upload-retry-btn:hover {
    background: #111;
    color: #fff;
    border-color: #111;
}

.btn:disabled,
.cover-upload-btn:disabled,
.cover-remove-btn:disabled,
.ai-action-btn:disabled,
.ai-run-btn:disabled,
.ai-history-restore:disabled,
.btn-cancel:disabled,
.btn-primary:disabled,
.btn-secondary:disabled,
.btn-success:disabled,
.upload-retry-btn:disabled {
    opacity: 0.56;
    cursor: not-allowed;
}

.btn-text {
    min-height: var(--ui-control-height);
    padding: 0 10px;
    border: 1px solid transparent;
    border-radius: var(--ui-radius-md);
    background: transparent;
    color: var(--ui-muted);
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-text:hover {
    background: #f3f4f6;
    color: var(--ui-fg);
}

.btn-sm,
.btn-toggle,
.upload-panel-toggle,
.upload-retry-btn,
.ai-history-restore {
    min-height: var(--ui-control-height-sm);
    padding: 0 10px;
    border-radius: var(--ui-radius-sm);
    font-size: 12px;
    font-weight: 600;
}

.btn-toggle,
.upload-panel-toggle {
    border: 1px solid var(--ui-border);
    color: var(--ui-muted);
    background: #fff;
}

.btn-toggle:hover,
.upload-panel-toggle:hover {
    border-color: var(--ui-border-strong);
    color: var(--ui-fg);
    background: #fff;
}

.cover-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.ai-model-row,
.ai-chat-toolbar,
.ai-history-actions,
.nav-actions {
    gap: 8px;
}

.upload-panel-header {
    padding: 10px 12px;
    background: var(--ui-surface-muted);
    border-bottom: 1px solid var(--ui-border);
}

.upload-progress-item {
    padding: 10px 0;
    border-bottom: 1px solid #f3f4f6;
}

.upload-progress-bar,
.editor-inline-upload-progress {
    height: 6px;
    border-radius: 999px;
    background: #e5e7eb;
}

.upload-progress-fill,
.editor-inline-upload-progress-fill {
    border-radius: 999px;
    background: #111;
}

.tag-item,
.tool-tag {
    border-radius: 999px;
    border: 1px solid #d1d5db;
    background: #f9fafb;
    color: #374151;
}

.tag-item:hover,
.tool-tag:hover {
    border-color: #9ca3af;
    background: #f3f4f6;
}

.modal-content {
    min-width: 320px;
    background: #fff;
}

.modal-title,
.modal-body label {
    color: var(--ui-fg);
}