:root {
  --bg: #f0f4f8;
  --surface: #ffffff;
  --sidebar: #1e3a5f;
  --sidebar-hover: #2a4f7a;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #059669;
  --warning: #d97706;
  --danger: #dc2626;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --sidebar-width: 240px;
}

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

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  font-size: 28px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-header h1 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.3;
}

.nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: left;
  width: 100%;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-weight: 500;
}

.nav-icon {
  font-size: 18px;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.45);
  font-size: 11px;
}

/* Main */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar h2 {
  font-size: 20px;
  font-weight: 600;
}

.topbar-actions {
  display: flex;
  gap: 8px;
}

.topbar-actions[hidden] {
  display: none;
}

.content {
  padding: 24px 28px;
  flex: 1;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

/* Cards & Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.stat-card .label {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

.stat-card .sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-card.primary .value { color: var(--primary); }
.stat-card.success .value { color: var(--success); }
.stat-card.warning .value { color: var(--warning); }

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.panel-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.panel-header .dorm-nav-title h3 {
  font-size: 18px;
}

.panel-body {
  padding: 20px;
}

.panel-body.no-padding {
  padding: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg);
  color: var(--text);
}

.btn-danger {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
}

.btn-danger:hover {
  background: #fee2e2;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.import-label {
  cursor: pointer;
}

/* Table */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead {
  background: #f8fafc;
}

th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 600;
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  border-bottom: 1px solid var(--border);
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: #f8fafc;
}

/* 宿舍人员统计表（对齐 Excel 录入） */
.sheet-table-wrap {
  border: 1px solid var(--border);
  border-radius: 8px;
}

.sheet-table {
  font-size: 13px;
  min-width: 980px;
}

.sheet-table thead {
  background: #f1f5f9;
}

.sheet-table th {
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  text-align: center;
}

.sheet-table th:last-child,
.sheet-table td:last-child {
  border-right: none;
}

.sheet-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  vertical-align: middle;
  text-align: center;
}

.sheet-table .col-room {
  background: #f8fafc;
  text-align: center;
  vertical-align: middle;
  min-width: 56px;
  border-right: 1px solid var(--border);
}

.sheet-table .room-meta {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
}

.sheet-table th.col-checkout,
.sheet-table td.col-checkout {
  background: #f5efe6;
}

.sheet-table .col-bed {
  text-align: center;
  width: 56px;
}

.sheet-table th.col-utility,
.sheet-table td.col-utility {
  background: #f0f7ff;
  white-space: nowrap;
  min-width: 88px;
}

.sheet-table tr.row-left td {
  color: var(--text-muted);
}

.sheet-table tr.row-early-checkout td {
  background: #fff3e0 !important;
}

.sheet-table tr.row-early-checkout:hover td {
  background: #ffe0b2 !important;
}

.sheet-table tr.row-early-checkout td.col-checkout {
  background: #ffcc80 !important;
}

.settlement-day-form {
  margin-top: 8px;
}

.settlement-day-label {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 14px;
}

.settlement-day-input {
  width: 72px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
}

.settlement-day-quick {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.settlement-day-chip {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 12px;
  cursor: pointer;
  color: var(--text);
}

.settlement-day-chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.settlement-day-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.settlement-day-preview-wrap {
  max-height: 240px;
  overflow-y: auto;
  overflow-x: auto;
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0 4px;
}

.settlement-preview-table {
  width: auto;
  max-width: 100%;
  font-size: 13px;
  table-layout: auto;
  border-collapse: collapse;
}

.settlement-preview-table th,
.settlement-preview-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

.settlement-preview-table thead th {
  background: #f1f5f9;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.settlement-preview-table .col-room {
  padding-left: 12px;
}

.settlement-preview-table .col-date {
  padding-right: 12px;
}

.sheet-table tr.row-unmatched td {
  background: #fff1f0 !important;
}

.sheet-table tr.row-unmatched:hover td {
  background: #ffe4e1 !important;
}

.sheet-table tr.row-unmatched td.col-checkout {
  background: #ffe8e4 !important;
}

.sheet-table tr.row-incomplete td {
  background: #fff8e1 !important;
}

.sheet-table tr.row-incomplete:hover td {
  background: #ffecb3 !important;
}

.sheet-table tr.row-incomplete td.col-checkout {
  background: #fff3c4 !important;
}

.sheet-table tr.row-unmatched.row-incomplete td {
  background: #ffe8d6 !important;
}

.sheet-table .name-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.sheet-table .name-cell .cell-input {
  flex: 1;
  min-width: 0;
}

.sheet-table .match-reason {
  flex-shrink: 0;
  font-size: 11px;
  line-height: 1.2;
  color: #c62828;
  background: #ffcdd2;
  border-radius: 3px;
  padding: 2px 5px;
  white-space: nowrap;
}

.sheet-table .profile-hint {
  flex-shrink: 0;
  font-size: 11px;
  line-height: 1.2;
  color: #e65100;
  background: #ffe0b2;
  border-radius: 3px;
  padding: 2px 5px;
  white-space: nowrap;
}

.sheet-table tr:hover td.col-checkout {
  background: #efe6d8;
}

.form-grid-sheet {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

.form-group .text-muted {
  font-weight: 400;
  color: var(--text-muted);
}

/* 宿舍入口大方块 */
.dorm-hub {
  margin-bottom: 8px;
}

.dorm-hub-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
  font-size: 15px;
}

.dorm-hub-summary .btn {
  margin-left: auto;
}

.match-preview {
  margin-top: 12px;
}

.match-summary {
  margin-bottom: 12px;
  font-size: 14px;
}

.dorm-hub-summary strong {
  color: var(--primary);
  font-size: 22px;
}

.dorm-blocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.dorm-block {
  display: flex;
  align-items: stretch;
  gap: 20px;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  font: inherit;
  color: inherit;
  min-height: 180px;
}

.dorm-block:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 58, 95, 0.12);
}

.dorm-block-male {
  border-color: #bfdbfe;
  background: linear-gradient(145deg, #eff6ff 0%, #fff 55%);
}

.dorm-block-male:hover {
  border-color: #60a5fa;
}

.dorm-block-female {
  border-color: #fbcfe8;
  background: linear-gradient(145deg, #fdf2f8 0%, #fff 55%);
}

.dorm-block-female:hover {
  border-color: #f472b6;
}

.dorm-block-icon {
  width: 72px;
  height: 72px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 700;
  flex-shrink: 0;
}

.dorm-block-male .dorm-block-icon {
  background: #dbeafe;
  color: #1d4ed8;
}

.dorm-block-female .dorm-block-icon {
  background: #fce7f3;
  color: #be185d;
}

.dorm-block-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.dorm-block-body h3 {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
}

.dorm-block-stat {
  font-size: 15px;
  color: var(--text-muted);
}

.dorm-block-stat strong {
  font-size: 28px;
  color: var(--text);
  margin-right: 4px;
}

.dorm-block-meta {
  font-size: 13px;
  color: var(--text-muted);
}

.dorm-block-cta {
  margin-top: auto;
  padding-top: 12px;
  font-size: 14px;
  font-weight: 600;
}

.dorm-block-male .dorm-block-cta { color: #1d4ed8; }
.dorm-block-female .dorm-block-cta { color: #be185d; }

.dorm-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.dorm-nav-title {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.dorm-nav-title h3 {
  font-size: 18px;
  margin: 0;
}

.dorm-nav-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
}

.dorm-nav-badge.male {
  background: #dbeafe;
  color: #1d4ed8;
}

.dorm-nav-badge.female {
  background: #fce7f3;
  color: #be185d;
}

@media (max-width: 768px) {
  .dorm-blocks {
    grid-template-columns: 1fr;
  }
}

/* 整表格子可编辑 */
.sheet-table.sheet-editable td {
  padding: 2px 4px;
}

.sheet-table.sheet-editable .col-room {
  padding: 8px 12px;
}

.sheet-table.sheet-editable .cell-input {
  width: 100%;
  min-width: 0;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  outline: none;
  text-align: center;
}

.sheet-table.sheet-editable .cell-input:hover {
  border-color: var(--border);
  background: #fff;
}

.sheet-table.sheet-editable .cell-input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.sheet-table.sheet-editable .cell-input[type="date"] {
  min-width: 118px;
}

.sheet-table.sheet-editable input.cell-bed {
  text-align: center;
  width: 100%;
  min-width: 0;
}

.sheet-table.sheet-editable tr.row-empty td {
  background: #fafbfc;
}

.sheet-table.sheet-editable tr.row-empty:hover td {
  background: #f0f7ff;
}

.sheet-table.sheet-editable tr.row-empty td.col-checkout,
.sheet-table.sheet-editable tr.row-data td.col-checkout {
  background: #f5efe6;
}

.sheet-table.sheet-editable .empty-hint {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

.sheet-table.sheet-editable .col-actions {
  white-space: nowrap;
  padding: 4px 8px;
  text-align: center;
}


/* Badge */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background: #fef3c7;
  color: #92400e;
}

.badge-muted {
  background: #f1f5f9;
  color: #64748b;
}

.badge-male {
  background: #dbeafe;
  color: #1e40af;
}

.badge-female {
  background: #fce7f3;
  color: #9d174d;
}

.bar-fill.bar-male {
  background: linear-gradient(90deg, #3b82f6, #60a5fa);
}

.bar-fill.bar-female {
  background: linear-gradient(90deg, #ec4899, #f472b6);
}

.section-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.settle-table input {
  width: 72px;
  padding: 6px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
}

.settle-table th small {
  font-weight: normal;
}

.settle-preview {
  font-size: 12px;
  white-space: nowrap;
}

.reading-preview {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

.reading-preview strong {
  color: var(--primary);
}

/* 水电费：表格录入 */
.util-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.util-tab {
  padding: 10px 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.15s;
}

.util-tab:hover {
  border-color: var(--primary);
  color: var(--text);
}

.util-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 500;
}

.entry-panel .panel-body {
  padding: 0;
}

.entry-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: #f8fafc;
}

.entry-toolbar label {
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.entry-toolbar input[type="month"],
.entry-toolbar select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
}

.check-label {
  cursor: pointer;
  user-select: none;
}

.entry-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: auto;
}

.entry-actions {
  display: flex;
  gap: 8px;
}

.entry-footnote {
  padding: 12px 20px;
  font-size: 12px;
  border-top: 1px solid var(--border);
}

.spreadsheet-wrap {
  max-height: calc(100vh - 320px);
  overflow: auto;
}

.spreadsheet {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.spreadsheet thead {
  position: sticky;
  top: 0;
  z-index: 2;
  background: #f1f5f9;
  box-shadow: 0 1px 0 var(--border);
}

.spreadsheet th {
  padding: 10px 8px;
  text-align: center;
  font-size: 12px;
  white-space: nowrap;
}

.spreadsheet th small {
  display: block;
  font-weight: normal;
  color: var(--text-muted);
}

.spreadsheet th.col-edit {
  background: #eff6ff;
  color: var(--primary);
}

.spreadsheet td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--border);
  text-align: center;
  vertical-align: middle;
}

.spreadsheet tbody tr:hover {
  background: #f8fafc;
}

.spreadsheet tbody tr.row-empty {
  opacity: 0.55;
}

.spreadsheet tbody tr.row-saved {
  background: #ecfdf5;
}

.spreadsheet .cell-room {
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.spreadsheet .cell-readonly {
  background: #f8fafc;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.spreadsheet th.col-prev {
  color: var(--danger);
}

.spreadsheet .cell-input.cell-prev {
  color: var(--danger);
  font-weight: 600;
}

.spreadsheet .cell-input.cell-prev::placeholder {
  color: #fca5a5;
}

.spreadsheet .cell-input {
  width: 88px;
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.spreadsheet .cell-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
  background: #fff;
}

.spreadsheet .cell-input.cell-warn {
  border-color: var(--danger);
  background: #fef2f2;
}

.spreadsheet .cell-input.cell-warn:focus {
  box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.15);
}

.entry-row-hint {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.3;
}

.reading-form-hint {
  margin-bottom: 8px;
  font-size: 13px;
}

.spreadsheet .cell-input::placeholder {
  color: #cbd5e1;
}

.settle-table input:focus {
  border-color: var(--primary);
  outline: none;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
}

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

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
}

.form-group input,
.form-group select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--surface);
  border-radius: 12px;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-state p {
  margin-bottom: 16px;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-box input {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  width: 220px;
  outline: none;
}

.search-box input:focus {
  border-color: var(--primary);
}

/* Bill summary */
.bill-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.bill-item {
  background: #f8fafc;
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}

.bill-item .label {
  font-size: 12px;
  color: var(--text-muted);
}

.bill-item .amount {
  font-size: 20px;
  font-weight: 700;
  margin-top: 4px;
}

.bill-item.total {
  background: #eff6ff;
}

.bill-item.total .amount {
  color: var(--primary);
}

/* Chart bars (simple CSS) */
.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bar-label {
  width: 80px;
  font-size: 13px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 24px;
  background: #f1f5f9;
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #60a5fa);
  border-radius: 6px;
  transition: width 0.4s ease;
  min-width: 2px;
}

.bar-value {
  width: 60px;
  text-align: right;
  font-size: 13px;
  font-weight: 600;
}

.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.mt-16 { margin-top: 16px; }

@media (max-width: 768px) {
  .sidebar {
    width: 64px;
  }

  .sidebar-header h1,
  .nav-item span:not(.nav-icon),
  .sidebar-footer {
    display: none;
  }

  .main {
    margin-left: 64px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.app-loading {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240, 244, 248, 0.92);
}

.app-loading[hidden] {
  display: none;
}

.app-loading-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px 32px;
  box-shadow: var(--shadow);
  font-size: 15px;
  color: var(--text);
}

body.app-not-ready .content {
  pointer-events: none;
  opacity: 0.55;
}

body.app-not-ready .topbar-actions .btn,
body.app-not-ready .topbar-actions .import-label {
  pointer-events: none;
  opacity: 0.5;
}

.nav-item:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}