/* ===== 基础变量 ===== */
:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --bg-hover: #273449;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
  --accent-light: rgba(245, 158, 11, 0.15);
  --border: #334155;
  --border-light: #475569;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.4);
  --transition: all 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

.hidden { display: none !important; }

/* ===== 登录页 ===== */
#login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  padding: 20px;
}

.login-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  font-size: 28px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-sub {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group small {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
}
.btn-primary:hover { background: linear-gradient(135deg, #fbbf24, #f59e0b); transform: translateY(-1px); }

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}
.btn-secondary:hover { background: var(--bg-hover); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #dc2626; }

.btn-success {
  background: var(--success);
  color: #fff;
}
.btn-success:hover { background: #16a34a; }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; }

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== 顶部栏 ===== */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 56px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.repo-info {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-primary);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ===== 布局 ===== */
.layout {
  display: flex;
  min-height: 100vh;
  padding-top: 56px;
}

.sidebar {
  position: fixed;
  top: 56px; left: 0; bottom: 0;
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  z-index: 99;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.nav-group {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.nav-title {
  padding: 0 20px 10px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
  border-left-color: var(--accent);
}

.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.main-content {
  margin-left: 240px;
  flex: 1;
  padding: 24px;
  min-height: calc(100vh - 56px);
}

/* ===== 页面标题 ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.page-title {
  font-size: 24px;
  font-weight: 700;
}

.page-desc {
  color: var(--text-secondary);
  font-size: 14px;
  margin-top: 4px;
}

/* ===== 卡片 ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
}

.card-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== 表格 ===== */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table tr:hover td {
  background: var(--bg-hover);
}

.data-table .title-cell {
  font-weight: 600;
  color: var(--text-primary);
}

.data-table .meta-cell {
  font-size: 12px;
  color: var(--text-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(34,197,94,0.15); color: #22c55e; }
.badge-warning { background: rgba(245,158,11,0.15); color: #f59e0b; }
.badge-danger { background: rgba(239,68,68,0.15); color: #ef4444; }
.badge-info { background: rgba(59,130,246,0.15); color: #3b82f6; }

/* ===== 编辑器区域 ===== */
.editor-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 20px;
}

.editor-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.editor-main {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* EasyMDE 样式覆盖 */
.EasyMDEContainer {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border) !important;
}

.EasyMDEContainer .editor-toolbar {
  background: var(--bg-secondary) !important;
  border-bottom: 1px solid var(--border) !important;
}

.EasyMDEContainer .editor-toolbar button {
  color: var(--text-secondary) !important;
}

.EasyMDEContainer .editor-toolbar button:hover {
  background: var(--bg-hover) !important;
  color: var(--text-primary) !important;
}

.EasyMDEContainer .CodeMirror {
  background: var(--bg-primary) !important;
  color: var(--text-primary) !important;
  border: none !important;
}

.EasyMDEContainer .CodeMirror-gutters {
  background: var(--bg-secondary) !important;
  border-right: 1px solid var(--border) !important;
}

.EasyMDEContainer .CodeMirror-linenumber {
  color: var(--text-muted) !important;
}

.EasyMDEContainer .editor-preview {
  background: var(--bg-primary) !important;
  color: var(--text-primary) !important;
}

.EasyMDEContainer .editor-preview pre {
  background: var(--bg-secondary) !important;
  border-radius: var(--radius-sm);
  padding: 12px;
}

.EasyMDEContainer .editor-preview code {
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
}

/* ===== 表单行 ===== */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.form-row .form-group {
  margin-bottom: 0;
}

/* ===== 标签输入 ===== */
.tag-input {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 10px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 42px;
  align-items: center;
}

.tag-input input {
  flex: 1;
  min-width: 80px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  padding: 4px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.tag-item .tag-remove {
  cursor: pointer;
  opacity: 0.7;
  font-size: 14px;
}
.tag-item .tag-remove:hover { opacity: 1; }

/* ===== 工具栏 ===== */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.toolbar .search-box {
  position: relative;
  flex: 1;
  max-width: 300px;
}

.toolbar .search-box input {
  width: 100%;
  padding: 8px 14px 8px 36px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
}

.toolbar .search-box::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast-success { background: var(--success); color: #fff; }
.toast-error { background: var(--danger); color: #fff; }
.toast-warning { background: var(--warning); color: #000; }

/* ===== Loading ===== */
.loading-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1001;
  backdrop-filter: blur(4px);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ===== 模态框 ===== */
.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1002;
  backdrop-filter: blur(4px);
}

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  max-width: 420px;
  width: 90%;
  box-shadow: var(--shadow-lg);
}

.modal-box h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.modal-box p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* ===== 分页 ===== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.pagination button {
  padding: 6px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.pagination button:hover:not(:disabled) {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination .page-info {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 状态指示器 ===== */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.offline { background: var(--danger); }
.status-dot.pending { background: var(--warning); }

/* ===== 开关 ===== */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg-tertiary);
  border-radius: 24px;
  transition: 0.3s;
}

.toggle-slider:before {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--accent);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(20px);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .editor-layout {
    grid-template-columns: 1fr;
  }
  .editor-sidebar {
    order: 2;
  }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; }
  .topbar { padding: 0 16px; }
}

/* ===== 代码预览 ===== */
.code-preview {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  color: var(--text-secondary);
}

/* ===== 文件树 ===== */
.file-tree {
  font-size: 13px;
}

.file-tree-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.file-tree-item:hover {
  background: var(--bg-hover);
}

.file-tree-item .file-icon { opacity: 0.6; }

/* ===== 拖拽上传 ===== */
.drop-zone {
  border: 2px dashed var(--border-light);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: pointer;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.drop-zone .drop-icon { font-size: 32px; margin-bottom: 12px; }

/* ===== 图片网格 ===== */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.image-grid-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}

.image-grid-item:hover {
  border-color: var(--accent);
  transform: scale(1.02);
}

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

.image-grid-item .img-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 8px;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  font-size: 11px;
  color: #fff;
  opacity: 0;
  transition: var(--transition);
}

.image-grid-item:hover .img-overlay { opacity: 1; }