:root {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --text: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --border: #e2e8f0;
  --sidebar-w: 260px;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
[data-theme="dark"] {
  --bg: #0f172a;
  --bg-card: #1e293b;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #334155;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.5; min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Auth */
.auth-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #3b82f6 100%); }
.auth-card { background: var(--bg-card); border-radius: 16px; padding: 36px; width: 100%; max-width: 420px; box-shadow: 0 20px 50px rgba(0,0,0,.2); }
.auth-logo { text-align: center; margin-bottom: 28px; }
.auth-logo .logo-icon { font-size: 36px; color: var(--primary); }
.auth-logo h1 { font-size: 22px; margin: 8px 0 4px; }
.auth-logo p { color: var(--text-muted); font-size: 14px; }
.auth-form .form-group { margin-bottom: 16px; }
.auth-form label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
.auth-form input[type=email], .auth-form input[type=password], .auth-form input[type=text], .auth-form input[type=tel] {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; background: var(--bg); color: var(--text);
}
.auth-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.form-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; font-size: 14px; }
.checkbox { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; border-radius: 8px; font-weight: 600; font-size: 15px; border: none; cursor: pointer; transition: .15s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-block { width: 100%; }
.auth-footer { text-align: center; margin-top: 20px; font-size: 14px; color: var(--text-muted); }
.auth-demo { text-align: center; margin-top: 12px; font-size: 12px; color: var(--text-muted); opacity: .8; }

/* Alerts */
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }
[data-theme="dark"] .alert-success { background: #14532d; color: #bbf7d0; }
[data-theme="dark"] .alert-error { background: #7f1d1d; color: #fecaca; }

/* App shell */
.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: var(--sidebar-w); background: var(--bg-card); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100; transition: transform .25s; }
.sidebar-header { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid var(--border); }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; color: var(--text); text-decoration: none; }
.logo-icon { color: var(--primary); font-size: 22px; }
.sidebar-close { display: none; background: none; border: none; font-size: 18px; cursor: pointer; color: var(--text-muted); }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 8px; }
.nav-item { display: flex; align-items: center; gap: 10px; padding: 5px 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-size: 14px; margin-bottom: 2px; }
.nav-item:hover, .nav-item.active { background: rgba(37,99,235,.1); color: var(--primary); text-decoration: none; }
.nav-icon { width: 20px; text-align: center; opacity: .8; }
.nav-group { margin-top: 12px; }
.nav-group-title { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-muted); padding: 8px 12px 4px; font-weight: 600; }
.badge { background: var(--danger); color: #fff; font-size: 11px; padding: 2px 6px; border-radius: 10px; margin-left: auto; }
.sidebar-footer { padding: 12px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
.user-chip { display: flex; align-items: center; gap: 10px; flex: 1; text-decoration: none; color: var(--text); min-width: 0; }
.avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; flex-shrink: 0; }
.user-info { min-width: 0; }
.user-info strong { display: block; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-info small { font-size: 11px; color: var(--text-muted); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.btn-logout { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--text-muted); padding: 8px; }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 99; }

.main-content { flex: 1; margin-left: var(--sidebar-w); min-width: 0; }
.topbar { display: flex; align-items: center; gap: 12px; padding: 12px 20px; background: var(--bg-card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.menu-toggle { display: none; background: none; border: none; font-size: 22px; cursor: pointer; color: var(--text); }
.topbar-title { font-weight: 600; font-size: 16px; flex: 1; }
.theme-toggle { background: none; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: 16px; }
.page-content { padding: 20px; }

/* Dashboard */
.welcome-bar { margin-bottom: 20px; }
.welcome-bar h2 { font-size: 22px; }
.welcome-bar p { color: var(--text-muted); font-size: 14px; text-transform: capitalize; }
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-bottom: 20px; }
.card { background: var(--bg-card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); border: 1px solid var(--border); }
.card-label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.card-value { font-size: 20px; font-weight: 700; }
.positive { color: var(--success); }
.negative { color: var(--danger); }
.alerts-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.chip { padding: 6px 12px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.chip-danger { background: #fee2e2; color: #991b1b; }
.chip-warning { background: #fef3c7; color: #92400e; }
.chip-info { background: #dbeafe; color: #1e40af; }
.section { margin-bottom: 24px; }
.section h3 { font-size: 15px; margin-bottom: 10px; color: var(--text-muted); }
.quick-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.qa-btn { background: var(--bg-card); border: 1px solid var(--border); padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 500; color: var(--text); text-decoration: none; }
.qa-btn:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.dashboard-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.panel { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); box-shadow: var(--shadow); overflow: hidden; }
.panel-wide { grid-column: 1 / -1; }
.panel-header { display: flex; align-items: center; justify-content: space-between; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.panel-header h3 { font-size: 15px; }
.link-more { font-size: 13px; }
.panel-body { padding: 12px 16px; }
.empty { color: var(--text-muted); font-size: 14px; padding: 12px 0; }
.account-list, .agenda-list, .list-items { list-style: none; }
.account-list li, .agenda-list li, .list-items li { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.account-list li:last-child, .agenda-list li:last-child, .list-items li:last-child { border-bottom: none; }
.acc-color { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.acc-name { flex: 1; }
.acc-balance { font-weight: 600; }
.ap-time { font-weight: 700; color: var(--primary); min-width: 42px; }
.list-items li.overdue { background: rgba(220,38,38,.05); margin: 0 -16px; padding-left: 16px; padding-right: 16px; }
.amount { font-weight: 600; white-space: nowrap; }
.table-responsive { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--border); }
.table th { font-weight: 600; color: var(--text-muted); font-size: 12px; }
.text-right { text-align: right; }
.badge-scheduled, .badge-confirmed { background: #dbeafe; color: #1e40af; padding: 2px 8px; border-radius: 6px; font-size: 11px; }
.badge-completed { background: #dcfce7; color: #166534; padding: 2px 8px; border-radius: 6px; font-size: 11px; }
.placeholder-page { display: flex; align-items: center; justify-content: center; min-height: 50vh; }
.placeholder-card { text-align: center; padding: 40px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); max-width: 400px; }
.placeholder-card h2 { margin-bottom: 12px; }
.placeholder-card p { color: var(--text-muted); margin-bottom: 8px; }

@media (max-width: 900px) {
  .dashboard-grid { grid-template-columns: 1fr; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-close { display: block; }
  .sidebar-overlay.open { display: block; }
  .main-content { margin-left: 0; }
  .menu-toggle { display: block; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .cards-grid { grid-template-columns: 1fr; }
  .page-content { padding: 12px; }
  .quick-actions { gap: 6px; }
  .qa-btn { font-size: 12px; padding: 6px 10px; }
}

/* Part 2 extras */
.page-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 20px; }
.page-header h2 { font-size: 20px; }
.header-actions { display: flex; gap: 8px; }
.filters-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; align-items: center; }
.filters-bar input, .filters-bar select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-card); color: var(--text); font-size: 14px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text); font-size: 14px;
}
.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(37,99,235,.12);
}
.form-actions { display: flex; gap: 10px; margin-top: 8px; }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-card); color: var(--text); cursor: pointer; text-decoration: none; display: inline-block; }
.btn-sm:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.btn-sm.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-sm.btn-success { color: var(--success); border-color: #bbf7d0; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.actions { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.inline { display: inline; }
.pagination { display: flex; gap: 4px; padding: 12px 16px; flex-wrap: wrap; }
.pagination a { padding: 6px 10px; border-radius: 6px; border: 1px solid var(--border); color: var(--text); text-decoration: none; font-size: 13px; }
.pagination a.active, .pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.row-overdue { background: rgba(220,38,38,.06); }
.hint { font-size: 13px; color: var(--text-muted); margin-top: 12px; }
.badge-overdue { background: #fee2e2; color: #991b1b; padding: 2px 8px; border-radius: 6px; font-size: 11px; }
@media (max-width: 700px) {
  .form-grid { grid-template-columns: 1fr; }
  .filters-bar { flex-direction: column; align-items: stretch; }
}