:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --primary-light: #e0e7ff;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --sidebar-active: #667eea;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; background: var(--bg); color: var(--text); }
.app { display: flex; min-height: 100vh; }

.sidebar { width: 260px; background: var(--sidebar-bg); color: #cbd5e1; display: flex; flex-direction: column; flex-shrink: 0; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100; }
.sidebar-header { padding: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); display: flex; align-items: center; gap: 10px; transition: background 0.2s; }
.sidebar-header:hover { background: rgba(255,255,255,0.05); }
.sidebar-header .logo-icon { font-size: 28px; }
.sidebar-header .logo-text { font-size: 16px; font-weight: 600; color: #fff; }
.sidebar-header .logo-sub { font-size: 11px; color: #94a3b8; }
.sidebar-section { padding: 12px 0; flex: 1; overflow-y: auto; }
.sidebar-section-title { padding: 8px 20px; font-size: 11px; text-transform: uppercase; color: #64748b; letter-spacing: 1px; }
.sidebar-item { display: flex; align-items: center; gap: 12px; padding: 12px 20px; cursor: pointer; transition: all 0.2s; font-size: 14px; border-left: 3px solid transparent; }
.sidebar-item:hover { background: var(--sidebar-hover); color: #fff; }
.sidebar-item.active { background: rgba(102,126,234,0.15); color: #fff; border-left-color: var(--sidebar-active); }
.sidebar-item .icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar-item .badge { margin-left: auto; background: var(--danger); color: #fff; font-size: 11px; padding: 2px 7px; border-radius: 10px; }
.sidebar-user { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.1); display: flex; align-items: center; gap: 10px; }
.sidebar-user .avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; }
.sidebar-user .user-info { flex: 1; }
.sidebar-user .user-name { font-size: 13px; color: #fff; }
.sidebar-user .user-role { font-size: 11px; color: #94a3b8; }

.main { flex: 1; margin-left: 260px; display: flex; flex-direction: column; min-height: 100vh; }
.topbar { background: #fff; border-bottom: 1px solid var(--border); padding: 14px 28px; display: flex; align-items: center; justify-content: space-between; }
.topbar-left { display: flex; align-items: center; gap: 16px; }
.breadcrumb { font-size: 14px; color: var(--text-secondary); }
.breadcrumb .current { color: var(--text); font-weight: 500; }
.topbar-actions { display: flex; gap: 10px; }
.content { flex: 1; padding: 24px 28px; overflow-y: auto; }

.card { background: var(--card); border-radius: 12px; padding: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.05); border: 1px solid var(--border); margin-bottom: 16px; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-title { font-size: 16px; font-weight: 600; }
.card-subtitle { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 16px; border-radius: 8px; font-size: 13px; cursor: pointer; font-weight: 500; transition: all 0.15s; border: none; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: #fff; color: var(--primary); border: 1px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-secondary { background: #f1f5f9; color: var(--text); }
.btn-secondary:hover { background: #e2e8f0; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }
.btn-icon { padding: 8px; background: transparent; color: var(--text-secondary); }
.btn-icon:hover { background: #f1f5f9; color: var(--text); }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 13px; padding: 4px 6px; }
.btn-link:hover { text-decoration: underline; }
.btn-link.danger { color: var(--danger); }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 500; color: var(--text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; font-family: inherit; transition: border-color 0.15s; background: #fff; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(102,126,234,0.1); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 600px) { .form-row, .form-row-3 { grid-template-columns: 1fr; } }
.form-help { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

.table { width: 100%; border-collapse: collapse; }
.table th { background: #f8fafc; padding: 10px 14px; text-align: left; font-size: 12px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
.table td { padding: 12px 14px; border-bottom: 1px solid #f1f5f9; font-size: 14px; }
.table tbody tr:hover { background: #f8fafc; }
.table tbody tr:last-child td { border-bottom: none; }
.table-actions { display: flex; gap: 6px; }

.tag { display: inline-flex; align-items: center; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 500; }
.tag-active { background: #d1fae5; color: #065f46; }
.tag-inactive { background: #e2e8f0; color: #475569; }
.tag-warning { background: #fef3c7; color: #92400e; }
.tag-error { background: #fee2e2; color: #991b1b; }
.tag-info { background: #dbeafe; color: #1e40af; }
.tag-success { background: #d1fae5; color: #065f46; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card { background: #fff; border-radius: 12px; padding: 18px; border: 1px solid var(--border); }
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); }
.stat-card .stat-value { font-size: 26px; font-weight: 700; margin-top: 4px; }
.stat-card .stat-value.blue { color: var(--primary); }
.stat-card .stat-value.green { color: var(--success); }
.stat-card .stat-value.orange { color: var(--warning); }
.stat-card .stat-value.purple { color: #8b5cf6; }
.stat-card .stat-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

.env-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.env-card { background: #fff; border-radius: 12px; padding: 20px; border: 1px solid var(--border); cursor: pointer; transition: all 0.2s; position: relative; }
.env-card:hover { box-shadow: 0 8px 30px rgba(102,126,234,0.15); transform: translateY(-2px); border-color: var(--primary); }
.env-card .env-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 10px; }
.env-card .env-name { font-size: 16px; font-weight: 600; }
.env-card .env-desc { color: var(--text-secondary); font-size: 13px; margin-bottom: 12px; min-height: 20px; }
.env-card .env-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 10px; font-size: 13px; }
.env-card .env-meta .meta-label { color: var(--text-secondary); font-size: 12px; }
.env-card .env-meta .meta-val { font-weight: 500; }
.env-card .env-actions { display: flex; gap: 6px; margin-top: 14px; padding-top: 12px; border-top: 1px solid #f1f5f9; }
.env-card .env-actions .btn-link { flex: 1; text-align: center; }

.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15,23,42,0.5); display: none; align-items: center; justify-content: center; z-index: 9999; }
.modal-overlay.show { display: flex; }
.modal { background: #fff; border-radius: 14px; padding: 24px; width: 600px; max-width: 94%; max-height: 90vh; overflow-y: auto; }
.modal h3 { font-size: 18px; margin: 0 0 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }
.modal-close { position: absolute; top: 16px; right: 20px; background: transparent; border: none; font-size: 20px; cursor: pointer; color: var(--text-secondary); }

.tabs { display: flex; gap: 4px; background: #f1f5f9; padding: 5px; border-radius: 10px; margin-bottom: 16px; }
.tab { padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; color: var(--text-secondary); font-weight: 500; transition: all 0.15s; display: flex; align-items: center; gap: 6px; }
.tab:hover { color: var(--text); }
.tab.active { background: #fff; color: var(--primary); box-shadow: 0 2px 6px rgba(0,0,0,0.06); }

.toast { position: fixed; top: 20px; right: 20px; padding: 12px 24px; border-radius: 10px; color: #fff; z-index: 10000; display: none; box-shadow: 0 4px 20px rgba(0,0,0,0.15); font-size: 14px; min-width: 200px; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--info); }
.toast.warning { background: var(--warning); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty-state .icon { font-size: 56px; margin-bottom: 12px; }
.empty-state h3 { font-size: 16px; color: var(--text); margin-bottom: 6px; }
.empty-state p { font-size: 13px; margin-bottom: 16px; }

.filter-bar { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }
.filter-bar .spacer { flex: 1; }
.filter-btn { padding: 6px 14px; border: 1px solid var(--border); border-radius: 16px; background: #fff; cursor: pointer; font-size: 13px; color: var(--text-secondary); transition: all 0.15s; }
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.search-input { padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; width: 220px; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 16px; }
.pagination button { padding: 6px 12px; border: 1px solid var(--border); background: #fff; border-radius: 6px; cursor: pointer; font-size: 13px; color: var(--text); }
.pagination button:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }
.pagination .info { color: var(--text-secondary); font-size: 13px; margin: 0 8px; }

.checkbox-group { display: flex; gap: 16px; flex-wrap: wrap; }
.checkbox-group label { display: flex; align-items: center; gap: 6px; font-weight: normal; cursor: pointer; font-size: 14px; }
.checkbox-group input { width: auto; }

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 10px; margin-bottom: 16px; }
.info-item { background: #f8fafc; border-radius: 8px; padding: 10px 14px; }
.info-item .info-label { font-size: 12px; color: var(--text-secondary); }
.info-item .info-value { font-size: 15px; color: var(--text); font-weight: 600; margin-top: 2px; }

.chart-container { position: relative; height: 300px; }

.td-container { position: relative; width: 100%; height: 420px; background: linear-gradient(180deg, #f0f4f8 0%, #dde4ed 100%); border-radius: 12px; overflow: hidden; }
.td-container canvas { display: block; }
.td-controls { position: absolute; top: 12px; right: 12px; display: flex; gap: 8px; align-items: center; z-index: 2; }
.td-controls button { background: rgba(255,255,255,0.95); border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font-size: 13px; cursor: pointer; }
.td-controls button:hover { background: #fff; }
.td-tooltip { position: absolute; pointer-events: none; background: rgba(15,23,42,0.92); color: #fff; padding: 8px 12px; border-radius: 6px; font-size: 12px; z-index: 10; transform: translate(-50%, -120%); white-space: normal; max-width: 260px; line-height: 1.5; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.td-tooltip::after { content: ''; position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%); border: 4px solid transparent; border-top-color: rgba(15,23,42,0.92); }
.td-legend { margin-top: 12px; padding: 0; background: transparent; border: none; border-radius: 8px; font-size: 12px; display: flex; flex-direction: column; gap: 12px; }
.td-legend-section { background: #fff; border: 1px solid var(--border); border-radius: 8px; padding: 10px 14px 14px; }
.td-legend-title { font-size: 13px; font-weight: 600; color: #1e293b; margin: 0 0 10px; padding-bottom: 8px; border-bottom: 1px dashed #e2e8f0; display: flex; align-items: center; gap: 6px; }
.td-legend-grid { display: grid; gap: 2px 12px; }
.td-legend-grid-sensors { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); max-height: 220px; overflow-y: auto; }
.td-legend-grid-equips { grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }
.td-legend-item { display: flex; align-items: center; gap: 6px; margin: 2px 0; line-height: 1.5; padding: 6px 8px; border-radius: 6px; cursor: pointer; border: 1px solid transparent; transition: background .15s, border-color .15s, transform .15s, box-shadow .15s; }
.td-legend-item-sensor { font-size: 12px; line-height: 1.45; }
.td-legend-item-equip { padding: 10px 12px; align-items: flex-start; gap: 10px; font-size: 12.5px; }
.td-legend-item:hover { background: #f1f5f9; border-color: #e2e8f0; }
.td-legend-item.td-legend-item-selected { background: linear-gradient(135deg, #eff6ff, #eef2ff); border-color: #6366f1; color: #3730a3; font-weight: 600; transform: translateY(-1px); box-shadow: 0 2px 6px rgba(99,102,241,0.15); }
.td-legend-dot { width: 10px; height: 10px; border-radius: 50%; }
.td-fixed-info { position: absolute; top: 48px; left: 12px; padding: 10px 14px; background: rgba(15,23,42,0.20); color: #ffffff; font-size: 12px; line-height: 1.55; border-radius: 8px; box-shadow: 0 8px 24px rgba(15,23,42,0.12); backdrop-filter: blur(1px); -webkit-backdrop-filter: blur(1px); pointer-events: auto; z-index: 999; max-width: 320px; white-space: normal; word-break: break-word; border: 1px solid rgba(15,23,42,0.22); text-shadow: 0 1px 2px rgba(0,0,0,0.55), 0 0 6px rgba(15,23,42,0.45); }
.td-fixed-info input, .td-fixed-info button, .td-fixed-info select, .td-fixed-info textarea { pointer-events: auto; }
.td-fixed-info b { color: #fff; font-weight: 700; text-shadow: 0 1px 3px rgba(0,0,0,0.7); }

.density-card { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; border-radius: 12px; padding: 24px; margin-bottom: 16px; }
.density-card h3 { color: #fff; margin: 0 0 12px; font-size: 16px; }
.density-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.density-stat { background: rgba(255,255,255,0.15); border-radius: 8px; padding: 12px; }
.density-stat .ds-label { font-size: 12px; opacity: 0.9; }
.density-stat .ds-value { font-size: 22px; font-weight: 700; margin-top: 4px; }

.param-list { display: flex; flex-direction: column; gap: 10px; }
.param-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: #fff; }
.param-item:hover { border-color: var(--primary); }
.param-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 18px; background: var(--primary-light); }
.param-info { flex: 1; }
.param-info .p-name { font-weight: 600; font-size: 14px; }
.param-info .p-meta { font-size: 12px; color: var(--text-secondary); }
.param-actions { display: flex; gap: 6px; }

.nav-pills { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-pill { padding: 6px 14px; border-radius: 16px; background: #f1f5f9; cursor: pointer; font-size: 13px; color: var(--text-secondary); }
.nav-pill:hover { background: #e2e8f0; }
.nav-pill.active { background: var(--primary); color: #fff; }

.loading { display: flex; align-items: center; justify-content: center; padding: 40px; color: var(--text-secondary); }
.loading .spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin-right: 12px; }
@keyframes spin { to { transform: rotate(360deg); } }

.sensor-type-picker { display: flex; gap: 8px; flex-wrap: wrap; }
.sensor-type-option { padding: 8px 14px; border: 1px solid var(--border); border-radius: 8px; cursor: pointer; font-size: 13px; transition: all 0.15s; }
.sensor-type-option:hover { border-color: var(--primary); }
.sensor-type-option.selected { background: var(--primary); color: #fff; border-color: var(--primary); }

@media (max-width: 900px) {
    .sidebar { transform: translateX(-100%); transition: transform 0.2s; }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
    .mobile-menu-btn { display: block !important; }
}
.mobile-menu-btn { display: none; }

.detail-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.detail-header .back-btn { display: inline-flex; align-items: center; gap: 4px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 8px; background: #fff; cursor: pointer; font-size: 13px; color: var(--text); }
.detail-header .back-btn:hover { background: #f1f5f9; }
.detail-title { font-size: 20px; font-weight: 600; }
.detail-actions { display: flex; gap: 8px; margin-left: auto; }

.log-list { display: flex; flex-direction: column; }
.log-item { display: flex; gap: 12px; padding: 14px; border-bottom: 1px solid #f1f5f9; }
.log-item:last-child { border-bottom: none; }
.log-time { color: var(--text-secondary); font-size: 12px; min-width: 120px; }
.log-content { flex: 1; }
.log-title { font-size: 14px; font-weight: 500; }
.log-desc { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }
.log-status { flex-shrink: 0; }

.multi-select { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px; border: 1px solid var(--border); border-radius: 8px; min-height: 38px; align-items: center; }
.multi-select .ms-item { background: var(--primary-light); color: var(--primary); padding: 3px 10px; border-radius: 12px; font-size: 12px; display: flex; align-items: center; gap: 4px; }
.multi-select .ms-item .ms-remove { cursor: pointer; font-weight: bold; }
.multi-select .ms-placeholder { color: var(--text-secondary); font-size: 13px; }