/* ── Variables ─────────────────────────────────────────────────── */
:root {
  --primary: #1a56db;
  --primary-dark: #1341b0;
  --primary-light: #e8f0fe;
  --success: #0e9f6e;
  --success-light: #def7ec;
  --danger: #e02424;
  --danger-light: #fde8e8;
  --warning: #c27803;
  --warning-light: #fdf6b2;
  --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-w: 230px;
  --header-h: 56px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
}

/* ── Reset ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ── Layout ────────────────────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  background: var(--gray-900);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .25s ease;
}

.sidebar-brand {
  padding: 18px 20px 14px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand .brand-name {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  display: block;
  line-height: 1.2;
}
.sidebar-brand .brand-sub {
  font-size: 11px;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: .06em;
}

.sidebar-nav { flex: 1; padding: 10px 0; overflow-y: auto; }
.nav-section { margin-bottom: 4px; }
.nav-section-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-500);
  padding: 10px 20px 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--gray-300);
  font-size: 13.5px;
  cursor: pointer;
  border-radius: 0;
  transition: background .15s, color .15s;
  position: relative;
}
.nav-item:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.nav-item.active { background: var(--primary); color: #fff; }
.nav-item .nav-icon { width: 18px; text-align: center; font-size: 15px; flex-shrink: 0; }
.nav-item .badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: 12px;
  color: var(--gray-400);
}
.sidebar-footer .user-name { font-weight: 600; color: var(--gray-200); }

.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  height: var(--header-h);
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
  flex: 1;
}
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.page-body { padding: 24px; flex: 1; }

/* ── Cards ─────────────────────────────────────────────────────── */
.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-title { font-size: 14px; font-weight: 600; color: var(--gray-800); flex: 1; }
.card-body { padding: 20px; }

/* Stat cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat-label { font-size: 12px; color: var(--gray-500); font-weight: 500; margin-bottom: 4px; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--gray-900); line-height: 1; }
.stat-sub { font-size: 12px; color: var(--gray-400); margin-top: 4px; }
.stat-icon { float: right; font-size: 22px; margin-top: -2px; }

/* ── Tables ─────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
thead th {
  background: var(--gray-50);
  color: var(--gray-500);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
  white-space: nowrap;
}
tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--gray-50); }
.td-actions { display: flex; gap: 6px; }

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, box-shadow .15s, opacity .15s;
  white-space: nowrap;
  text-decoration: none;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { background: #0a7a56; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }
.btn-outline { background: #fff; border-color: var(--gray-300); color: var(--gray-700); }
.btn-outline:hover:not(:disabled) { background: var(--gray-50); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }
.btn-icon { padding: 6px 8px; }

/* ── Forms ──────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 13px; font-weight: 500; color: var(--gray-700); margin-bottom: 5px; }
.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--gray-800);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,86,219,.12); }
.form-control:disabled { background: var(--gray-100); color: var(--gray-500); }
textarea.form-control { resize: vertical; min-height: 90px; }
select.form-control { cursor: pointer; }
.form-hint { font-size: 12px; color: var(--gray-400); margin-top: 4px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Badges ─────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11.5px;
  font-weight: 600;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* ── Modal ──────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff;
  border-radius: 10px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
  animation: modalIn .2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: translateY(-16px) scale(.97); } }
.modal-header {
  display: flex;
  align-items: center;
  padding: 18px 22px;
  border-bottom: 1px solid var(--gray-100);
}
.modal-title { font-size: 15px; font-weight: 600; flex: 1; }
.modal-close {
  background: none; border: none; font-size: 20px; cursor: pointer;
  color: var(--gray-400); padding: 0 4px; line-height: 1;
}
.modal-close:hover { color: var(--gray-700); }
.modal-body { padding: 22px; }
.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.modal-lg { max-width: 720px; }

/* ── Toolbar / Filters ──────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.search-box { position: relative; }
.search-box .form-control { padding-left: 34px; width: 220px; }
.search-box .search-icon {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--gray-400); font-size: 15px; pointer-events: none;
}
.spacer { flex: 1; }

/* ── Alerts / Toast ─────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13.5px;
  margin-bottom: 16px;
  border-left: 3px solid transparent;
}
.alert-success { background: var(--success-light); color: #065f46; border-color: var(--success); }
.alert-danger { background: var(--danger-light); color: #9b1c1c; border-color: var(--danger); }
.alert-warning { background: var(--warning-light); color: #92400e; border-color: var(--warning); }

.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 9999;
}
.toast {
  padding: 12px 18px;
  background: var(--gray-900);
  color: #fff;
  border-radius: 8px;
  font-size: 13.5px;
  box-shadow: var(--shadow-md);
  animation: toastIn .25s ease;
  max-width: 320px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes toastIn { from { opacity: 0; transform: translateX(24px); } }

/* ── Pagination ─────────────────────────────────────────────────── */
.pagination {
  display: flex; align-items: center; gap: 6px;
  margin-top: 16px; justify-content: center;
  font-size: 13px;
}
.pagination .btn { padding: 5px 12px; }
.pagination .page-info { color: var(--gray-500); }

/* ── Empty state ────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--gray-400);
}
.empty-state .empty-icon { font-size: 36px; margin-bottom: 10px; }
.empty-state p { font-size: 14px; }

/* ── Progress bar ───────────────────────────────────────────────── */
.progress { background: var(--gray-100); border-radius: 999px; height: 8px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 999px; background: var(--primary); transition: width .3s; }
.progress-bar.warning { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* ── Login page ─────────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a56db 0%, #0a2e7a 100%);
}
.login-card {
  background: #fff;
  border-radius: 12px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 24px 64px rgba(0,0,0,.2);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .logo-text {
  font-size: 22px; font-weight: 800;
  color: var(--primary);
  display: block;
}
.login-logo .logo-sub { font-size: 13px; color: var(--gray-400); }

/* ── Utilities ──────────────────────────────────────────────────── */
.text-muted { color: var(--gray-400); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }
.text-sm { font-size: 12px; }
.font-bold { font-weight: 700; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.w-100 { width: 100%; }
.text-center { text-align: center; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 200px; }

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}