* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #2563eb;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #f59e0b;
  --bg: #f1f5f9;
  --sidebar-bg: #1e293b;
  --sidebar-text: #cbd5e1;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --text: #1e293b;
  --text-muted: #64748b;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1);
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; font-size: 15px; }
.tenant-name-link { font-weight: 600; }

.app { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 200px;
  min-width: 200px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}
.logo { padding: 20px 16px 12px; font-size: 18px; color: #fff; border-bottom: 1px solid #334155; }
.sidebar nav { flex: 1; padding: 8px 0; }
.sidebar nav a {
  display: block; padding: 10px 16px; color: var(--sidebar-text);
  text-decoration: none; font-size: 15px; transition: .15s;
}
.sidebar nav a:hover { background: #334155; color: #fff; }
.sidebar nav a.active { background: var(--primary); color: #fff; }
.sidebar-footer { padding: 12px; border-top: 1px solid #334155; }
.sidebar-footer select { width: 100%; padding: 6px; border-radius: 4px; border: 1px solid #475569; background: #334155; color: #e2e8f0; font-size: 13px; }
.version { display: block; text-align: center; margin-top: 6px; font-size: 11px; color: #64748b; }

/* Main */
main { margin-left: 200px; flex: 1; padding: 24px; max-width: calc(100vw - 200px); }
h2 { font-size: 22px; margin-bottom: 16px; }
h3 { font-size: 16px; margin: 16px 0 8px; }

.toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.toolbar select, .toolbar input { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }

/* Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat-card { background: var(--card-bg); padding: 16px; border-radius: var(--radius); box-shadow: var(--shadow); text-align: center; }
.stat-label { font-size: 14px; color: var(--text-muted); margin-bottom: 4px; }
.stat-value { font-size: 22px; font-weight: 700; }
.stat-value.success { color: var(--success); }
.stat-value.error { color: var(--danger); }

.section { background: var(--card-bg); padding: 16px; border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 16px; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; background: var(--card-bg); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.data-table th { background: #f8fafc; padding: 10px 12px; text-align: left; font-weight: 600; border-bottom: 2px solid var(--border); font-size: 13px; color: var(--text-muted); }
.data-table td { padding: 10px 12px; border-bottom: 2px solid #cbd5e1; }
.data-table tr:hover td { background: #f1f5f9; }
.data-table tr:last-child td { border-bottom: none; }
.data-table input[type="number"] { width: 80px; padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; text-align: right; }
/* Action buttons group */
.action-group { display: inline-flex; gap: 6px; padding: 4px 6px; background: #f8fafc; border-radius: 6px; border: 1px solid #e2e8f0; }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 13px; background: #e2e8f0; }
.badge.success { background: #dcfce7; color: #166534; }
.badge.error { background: #fef2f2; color: #991b1b; }

/* Buttons */
.btn-primary, .btn-small { cursor: pointer; padding: 6px 14px; border: none; border-radius: 6px; font-size: 15px; transition: .15s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: #1d4ed8; }
.btn-small { padding: 3px 10px; font-size: 14px; background: #e2e8f0; color: var(--text); }
.btn-small:hover { background: #cbd5e1; }
.btn-small.btn-primary { background: var(--primary); color: #fff; }
.btn-danger { background: #fef2f2 !important; color: var(--danger) !important; }
.btn-danger:hover { background: #fecaca !important; }

/* Forms */
.form-inline { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; background: var(--card-bg); padding: 16px; border-radius: var(--radius); box-shadow: var(--shadow); }
.form-inline label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; color: #1565C0; }
.form-inline input { padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }

#config-form { max-width: 480px; background: var(--card-bg); padding: 20px; border-radius: var(--radius); box-shadow: var(--shadow); }
#config-form label { display: block; margin-bottom: 12px; font-size: 14px; color: #1565C0; }
#config-form input, #config-form textarea { width: 100%; padding: 8px; margin-top: 4px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
#config-form textarea { min-height: 60px; }

/* Tabs */
.tabs { display: flex; gap: 0; margin-bottom: 16px; }
.tabs button { padding: 8px 16px; background: #e2e8f0; border: 1px solid var(--border); cursor: pointer; font-size: 14px; }
.tabs button:first-child { border-radius: 6px 0 0 6px; }
.tabs button:last-child { border-radius: 0 6px 6px 0; }
.tabs button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Modal */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 200; }
.modal { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%); background: #fff; border-radius: 12px; padding: 24px; z-index: 201; min-width: 360px; max-width: 90vw; max-height: 85vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,.2); }

/* Detail grid for tenant/receipt info */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.detail-section { padding: 8px 12px; background: #fafafa; border-radius: 6px; }
.detail-section h4 { margin: 0 0 6px; font-size: 13px; color: #666; }
.detail-section p { margin: 3px 0; font-size: 13px; }
.detail-total { text-align: right; font-size: 18px; padding: 10px; border-top: 1px solid #e0e0e0; margin-top: 10px; }
.modal h3 { margin-bottom: 16px; }
.modal label { display: block; margin-bottom: 12px; font-size: 14px; color: #1565C0; }
.modal label input, .modal label select { width: 100%; padding: 8px; margin-top: 4px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; }
.modal .actions { display: flex; gap: 8px; margin-top: 16px; justify-content: flex-end; }

/* Loading / Error */
.loading, .error { padding: 40px; text-align: center; color: var(--text-muted); }
.error { color: var(--danger); }
.muted { color: var(--text-muted); font-size: 14px; padding: 16px; }

/* Price Grid */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.price-card { background: var(--card-bg); padding: 16px; border-radius: var(--radius); box-shadow: var(--shadow); }
.price-card h4 { margin-bottom: 12px; }
.price-card label { display: block; margin-bottom: 8px; font-size: 13px; color: #1565C0; }
.price-card label input { width: 80px; margin-left: 4px; padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; text-align: right; }
.toggle-link { cursor: pointer; color: var(--primary) !important; user-select: none; }
.toggle-link:hover { text-decoration: underline; }
#water-split, #elec-split { padding-left: 12px; border-left: 2px solid var(--primary); margin-top: 4px; }

/* Fee breakdown in bills */
.fee-detail .fee-total { font-weight: 600; }
.fee-detail .fee-breakdown { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.fee-detail .fee-breakdown span { display: inline-block; margin-right: 8px; }

/* Bill detail modal */
.bill-detail { max-width: 560px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.detail-section { background: #f8fafc; padding: 12px; border-radius: 6px; }
.detail-section h4 { font-size: 14px; margin-bottom: 8px; }
.detail-section p { font-size: 13px; margin-bottom: 4px; }
.detail-section p label { display: inline-block; width: 90px; color: #1565C0; }
.detail-section p strong { color: var(--text); }
.detail-total { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: #f0f9ff; border-radius: 8px; margin: 12px 0; font-size: 16px; }
.detail-total strong { font-size: 22px; color: var(--primary); }
.detail-note { font-size: 13px; color: var(--text-muted); padding: 8px; background: #fffbeb; border-radius: 6px; }
.detail-note label { font-weight: 600; }

/* Mobile response */
@media (max-width: 768px) {
  .sidebar { width: 160px; min-width: 160px; }
  .sidebar nav a { padding: 8px 12px; font-size: 13px; }
  main { margin-left: 160px; max-width: calc(100vw - 160px); padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .data-table { font-size: 12px; }
  .data-table td, .data-table th { padding: 6px 8px; }
}/* ===== v4 ADDITIONS ===== */

/* Meter popup */
.meter-popup { max-width: 480px; }
.meter-input-group { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 8px; }
.meter-item { background: #f8fafc; padding: 12px; border-radius: 6px; }
.meter-item label { font-size: 13px; color: #1565C0; margin-bottom: 4px; display: block; }
.meter-item .prev-val { font-size: 14px; color: var(--text-muted); padding: 4px 8px; background: #e2e8f0; border-radius: 4px; margin-bottom: 8px; }
.meter-item input { width: 100%; padding: 8px; font-size: 18px; text-align: center; border: 2px solid var(--border); border-radius: 6px; }
.meter-item input:focus { border-color: var(--primary); outline: none; }
.calc-result { text-align: center; margin-top: 6px; font-size: 14px; color: var(--primary); }
.calc-result strong { font-size: 18px; }

/* Clickable row (maintenance expand) */
.clickable { cursor: pointer; }
.clickable:hover { background: #f1f5f9; }
.maint-detail { background: #fffbeb; padding: 12px; margin: 0; border-top: 1px solid var(--border); font-size: 13px; }

/* Toggle checkbox labels */


/* Empty room cards */
.empty-rooms-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.empty-room-card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 12px; text-align: center; transition: box-shadow 0.2s; }
.empty-room-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.12); }
.erc-room { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.erc-rent { color: #666; font-size: 13px; }
.erc-action { color: #1890ff; font-size: 12px; margin-top: 8px; }
/* Clickable stat card */
.stat-card-clickable { cursor: pointer; transition: transform 0.15s; }
.stat-card-clickable:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
/* Tenant name link */
.tenant-name-link { color: #1890ff; text-decoration: none; font-weight: 500; }
.tenant-name-link:hover { text-decoration: underline; }
/* Compact form rows */
.form-row { display: flex; gap: 12px; align-items: flex-end; }
.form-row > label { flex: 1; margin-bottom: 0; color: #1565C0; }
.form-row > label.toggle-label { flex: 1; padding-top: 8px; }
.toggle-label { display: flex !important; align-items: center; gap: 8px; flex-direction: row !important; }
.toggle-label input[type="checkbox"] { width: auto !important; margin: 0 !important; }

/* Import section */
#import-result { padding: 8px 12px; border-radius: 6px; }
#import-result .success { color: var(--success); }
#import-result .error { color: var(--danger); }

/* Reply */
@media (max-width: 768px) {
  .meter-input-group { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
}.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 8px; }
.ym-selector { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; color: #666; }
.ym-selector select { padding: 4px 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; background: #fff; }

/* Meter reading clickable links */
a.meter-click { color: #2563eb; text-decoration: none; cursor: pointer; font-weight: 500; }
a.meter-click:hover { text-decoration: underline; color: #1d4ed8; }

/* 统计报表 */
.fee-cell { text-align: center; min-width: 60px; flex: 1; }
.fee-cell .fee-label { font-size: 12px; color: #888; }
.fee-cell .fee-val { font-size: 16px; font-weight: bold; margin-top: 4px; }
@media (max-width: 600px) {
  .fee-cell { min-width: 50px; }
  .fee-cell .fee-val { font-size: 14px; }
}

.edit-prev {
  color: #2196F3;
  font-size: 0.8em;
  margin-left: 4px;
  text-decoration: none;
  cursor: pointer;
}
.edit-prev:hover {
  text-decoration: underline;
}
.edit-prev-label {
  color: #64B5F6;
  font-size: 0.8em;
  margin-left: 4px;
  text-decoration: none;
  cursor: pointer;
  vertical-align: middle;
}
.edit-prev-label:hover {
  text-decoration: underline;
}

/* Keep input values in default color regardless of label color */
label input, label select, label textarea { color: #333; }

/* Email notify toggle switch */
.email-toggle { position: relative; display: inline-block; width: 40px; height: 22px; }
.email-toggle input { opacity: 0; width: 0; height: 0; }
.email-toggle .slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; border-radius: 22px; transition: 0.3s; }
.email-toggle .slider:before { position: absolute; content: ""; height: 16px; width: 16px; left: 3px; bottom: 3px; background-color: white; border-radius: 50%; transition: 0.3s; }
.email-toggle input:checked + .slider { background-color: #22c55e; }
.email-toggle input:checked + .slider:before { transform: translateX(18px); }