/* ========== 全局变量 ========== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #f59e0b;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --sidebar-width: 240px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Microsoft YaHei', sans-serif; background: var(--gray-100); color: var(--gray-800); font-size: 14px; }

/* ========== 登录页 ========== */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%); }
.login-container { width: 100%; max-width: 420px; padding: 20px; }
.login-card { background: #fff; border-radius: 12px; padding: 40px 36px; box-shadow: 0 20px 60px rgba(0,0,0,0.15); }
.login-header { text-align: center; margin-bottom: 32px; }
.login-header h1 { font-size: 28px; color: var(--primary); font-weight: 700; }
.login-header p { font-size: 15px; color: var(--gray-500); margin-top: 6px; }
.login-form .form-group { margin-bottom: 20px; }
.login-form label { display: block; font-size: 13px; color: var(--gray-600); margin-bottom: 6px; font-weight: 500; }
.login-form input { width: 100%; padding: 10px 14px; border: 1px solid var(--gray-300); border-radius: 8px; font-size: 15px; transition: border-color .2s; }
.login-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.btn-login { width: 100%; padding: 12px; background: var(--primary); color: #fff; border: none; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; transition: background .2s; }
.btn-login:hover { background: var(--primary-dark); }
.login-error { color: var(--danger); font-size: 13px; margin-top: 12px; text-align: center; min-height: 18px; }
.login-demo { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--gray-200); font-size: 12px; color: var(--gray-400); line-height: 1.8; }

/* ========== 主布局 ========== */
.app-layout { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-width); background: var(--gray-900); color: #fff; position: fixed; top: 0; left: 0; bottom: 0; overflow-y: auto; z-index: 100; transition: transform .3s; }
.sidebar-header { padding: 20px 24px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h2 { font-size: 18px; font-weight: 700; }
.sidebar-header p { font-size: 12px; color: var(--gray-400); margin-top: 4px; }
.sidebar-nav { padding: 12px 0; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 24px; color: var(--gray-300); text-decoration: none; cursor: pointer; transition: all .2s; border-left: 3px solid transparent; font-size: 14px; }
.nav-item:hover { background: rgba(255,255,255,0.05); color: #fff; }
.nav-item.active { background: var(--primary); color: #fff; border-left-color: #60a5fa; }
.nav-item svg { width: 20px; height: 20px; flex-shrink: 0; }
.sidebar-footer { position: absolute; bottom: 0; left: 0; right: 0; padding: 16px 24px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 12px; }
.sidebar-user { display: flex; align-items: center; gap: 8px; color: var(--gray-300); }
.sidebar-user .avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; }
.sidebar-user .user-info { flex: 1; }
.sidebar-user .user-info .name { font-weight: 500; color: #fff; }
.sidebar-user .user-info .role { color: var(--gray-400); font-size: 11px; }
.logout-btn { color: var(--gray-400); cursor: pointer; font-size: 12px; background: none; border: none; }
.logout-btn:hover { color: #fff; }

.main-content { flex: 1; margin-left: var(--sidebar-width); padding: 24px; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.page-header h1 { font-size: 22px; font-weight: 700; color: var(--gray-800); }
.page-header .actions { display: flex; gap: 8px; }

/* ========== 通用组件 ========== */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: none; border-radius: 6px; font-size: 14px; font-weight: 500; cursor: pointer; transition: all .2s; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(1.1); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-secondary:hover { background: var(--gray-300); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-outline { background: #fff; border: 1px solid var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.card { background: #fff; border-radius: 10px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); padding: 20px; margin-bottom: 20px; }
.card-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: var(--gray-800); }

/* 统计卡片 */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: #fff; border-radius: 10px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); display: flex; align-items: center; gap: 16px; }
.stat-card .stat-icon { width: 48px; height: 48px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.stat-card .stat-info .label { font-size: 13px; color: var(--gray-500); }
.stat-card .stat-info .value { font-size: 24px; font-weight: 700; color: var(--gray-800); }
.stat-card .stat-info .sub { font-size: 12px; color: var(--gray-400); }
.stat-card.blue .stat-icon { background: var(--primary-light); color: var(--primary); }
.stat-card.green .stat-icon { background: var(--success-light); color: var(--success); }
.stat-card.orange .stat-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.red .stat-icon { background: var(--danger-light); color: var(--danger); }

/* 表格 */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
table thead th { background: var(--gray-50); padding: 10px 12px; text-align: left; font-weight: 600; color: var(--gray-600); border-bottom: 2px solid var(--gray-200); white-space: nowrap; }
table tbody td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
table tbody tr:hover { background: var(--gray-50); }

/* 状态标签 */
.badge { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 500; }
.badge-vacant { background: var(--gray-100); color: var(--gray-600); }
.badge-leased { background: var(--success-light); color: var(--success); }
.badge-reserved { background: var(--warning-light); color: var(--warning); }
.badge-maintenance { background: var(--danger-light); color: var(--danger); }
.badge-paid { background: var(--success-light); color: var(--success); }
.badge-pending { background: var(--warning-light); color: var(--warning); }
.badge-overdue { background: var(--danger-light); color: var(--danger); }
.badge-active { background: var(--success-light); color: var(--success); }
.badge-expired { background: var(--gray-100); color: var(--gray-600); }
.badge-terminated { background: var(--danger-light); color: var(--danger); }

/* 表单 */
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
.form-row .form-group { flex: 1; min-width: 200px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--gray-600); margin-bottom: 6px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px 12px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 14px; transition: border-color .2s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.form-group textarea { resize: vertical; min-height: 80px; }

/* 弹窗 */
.modal-overlay { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); z-index: 200; justify-content: center; align-items: flex-start; padding: 40px 20px; overflow-y: auto; }
.modal-overlay.show { display: flex; }
.modal { background: #fff; border-radius: 10px; width: 100%; max-width: 600px; box-shadow: 0 20px 60px rgba(0,0,0,0.2); }
.modal.large { max-width: 800px; }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--gray-200); }
.modal-header h3 { font-size: 17px; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--gray-400); }
.modal-close:hover { color: var(--gray-800); }
.modal-body { padding: 20px; max-height: 60vh; overflow-y: auto; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; padding: 16px 20px; border-top: 1px solid var(--gray-200); }

/* Toast */
.toast { position: fixed; top: 20px; right: 20px; padding: 12px 20px; border-radius: 8px; color: #fff; font-size: 14px; z-index: 300; opacity: 0; transform: translateY(-10px); transition: all .3s; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

/* SVG 平面图 */
.svg-container { background: #fff; border: 1px solid var(--gray-200); border-radius: 8px; overflow: hidden; position: relative; }
.svg-toolbar { display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--gray-50); border-bottom: 1px solid var(--gray-200); flex-wrap: wrap; }
.svg-toolbar .toolbar-group { display: flex; align-items: center; gap: 4px; }
.svg-toolbar .toolbar-divider { width: 1px; height: 24px; background: var(--gray-300); margin: 0 4px; }
.svg-canvas-wrapper { overflow: auto; max-height: 600px; }
.svg-canvas { display: block; }
.room-rect { cursor: pointer; stroke-width: 2; transition: opacity .2s; }
.room-rect:hover { opacity: 0.8; }
.room-rect.selected { stroke: #f59e0b !important; stroke-width: 3 !important; }
.room-label { pointer-events: none; font-size: 13px; font-weight: 600; text-anchor: middle; }
.room-status-dot { pointer-events: none; }

/* 图例 */
.legend { display: flex; gap: 16px; flex-wrap: wrap; padding: 8px 12px; background: var(--gray-50); border-radius: 6px; font-size: 12px; }
.legend-item { display: flex; align-items: center; gap: 6px; }
.legend-color { width: 16px; height: 16px; border-radius: 3px; border: 1px solid var(--gray-300); }

/* 筛选栏 */
.filter-bar { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; align-items: center; }
.filter-bar select, .filter-bar input { padding: 8px 12px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 13px; }

/* 详情面板 */
.detail-panel { background: var(--gray-50); border-radius: 8px; padding: 16px; margin-top: 12px; }
.detail-row { display: flex; padding: 6px 0; border-bottom: 1px solid var(--gray-200); }
.detail-row:last-child { border-bottom: none; }
.detail-label { width: 100px; color: var(--gray-500); font-size: 13px; flex-shrink: 0; }
.detail-value { color: var(--gray-800); font-size: 13px; flex: 1; font-weight: 500; }

.empty-state { text-align: center; padding: 40px; color: var(--gray-400); }
.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; }

/* 响应式 */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.show { transform: translateX(0); }
  .main-content { margin-left: 0; }
}