/* ============================================================
   Student Library Seat Management System - Main Stylesheet
   ============================================================ */

:root {
  --primary: #2563EB;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --success: #16A34A;
  --success-light: #dcfce7;
  --warning: #F59E0B;
  --warning-light: #fef3c7;
  --danger: #DC2626;
  --danger-light: #fee2e2;
  --info: #0891b2;
  --info-light: #cffafe;
  --dark: #1e293b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --white: #ffffff;
  --sidebar-width: 260px;
  --topbar-height: 64px;
  --border-radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
  --transition: all 0.2s ease;
}

/* Dark Mode */
[data-theme="dark"] {
  --gray-50: #0f172a;
  --gray-100: #1e293b;
  --gray-200: #334155;
  --gray-300: #475569;
  --gray-500: #94a3b8;
  --gray-600: #cbd5e1;
  --gray-700: #e2e8f0;
  --gray-800: #f1f5f9;
  --white: #1e293b;
  --dark: #f1f5f9;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--gray-100);
  color: var(--gray-800);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ============ LAYOUT ============ */
.wrapper { display: flex; min-height: 100vh; }

/* ============ SIDEBAR ============ */
.sidebar {
  width: var(--sidebar-width);
  background: var(--dark);
  color: #e2e8f0;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  overflow-y: auto;
  transition: var(--transition);
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-brand .brand-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: white;
  flex-shrink: 0;
}

.sidebar-brand .brand-text { font-size: 15px; font-weight: 700; color: #fff; line-height: 1.3; }
.sidebar-brand .brand-sub { font-size: 11px; color: var(--gray-400); }

.sidebar-nav { padding: 12px 0; flex: 1; }

.nav-label {
  padding: 12px 20px 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--gray-400);
  text-transform: uppercase;
}

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  color: #94a3b8;
  font-size: 13.5px;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(255,255,255,.06);
  border-left-color: var(--primary);
  text-decoration: none;
}

.nav-link i { width: 18px; text-align: center; font-size: 15px; }
.nav-link .badge { margin-left: auto; background: var(--primary); color: #fff; font-size: 10px; padding: 2px 7px; border-radius: 20px; }

.nav-sub { display: none; background: rgba(0,0,0,.15); }
.nav-sub.open { display: block; }
.nav-sub .nav-link { padding-left: 50px; font-size: 13px; border-left-color: transparent; }
.nav-sub .nav-link.active, .nav-sub .nav-link:hover { border-left-color: transparent; color: #fff; }

.nav-link .arrow { margin-left: auto; transition: transform 0.2s; }
.nav-item.open > .nav-link .arrow { transform: rotate(90deg); }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; gap: 12px;
}

.sidebar-footer .user-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); display: flex;
  align-items: center; justify-content: center;
  font-weight: 700; color: #fff; font-size: 14px; flex-shrink: 0;
}

.sidebar-footer .user-info .name { font-size: 13px; font-weight: 600; color: #fff; }
.sidebar-footer .user-info .role { font-size: 11px; color: var(--gray-400); text-transform: capitalize; }
.sidebar-footer .logout-btn { margin-left: auto; color: var(--gray-400); font-size: 16px; }
.sidebar-footer .logout-btn:hover { color: var(--danger); }

/* ============ TOPBAR ============ */
.topbar {
  position: fixed; top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--topbar-height);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  display: flex; align-items: center; gap: 16px;
  padding: 0 24px;
  z-index: 900;
  box-shadow: var(--shadow);
}

.topbar-toggle {
  display: none;
  background: none; border: none;
  font-size: 20px; cursor: pointer;
  color: var(--gray-600); padding: 4px;
}

.topbar-title { font-size: 16px; font-weight: 700; color: var(--dark); }
.topbar-spacer { flex: 1; }

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

.topbar-btn {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 7px 10px;
  cursor: pointer; color: var(--gray-600);
  font-size: 15px; transition: var(--transition);
  position: relative; display: flex; align-items: center;
}
.topbar-btn:hover { background: var(--primary-light); color: var(--primary); }
.topbar-btn .notif-dot { position: absolute; top: 4px; right: 4px; width: 8px; height: 8px; background: var(--danger); border-radius: 50%; border: 2px solid white; }

.topbar-user { display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 6px 10px; border-radius: 8px; border: 1px solid var(--gray-200); }
.topbar-user:hover { background: var(--gray-100); }
.topbar-user .avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 13px; }
.topbar-user .uname { font-size: 13px; font-weight: 600; color: var(--gray-700); }

/* ============ MAIN CONTENT ============ */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--topbar-height);
  padding: 24px;
  min-height: calc(100vh - var(--topbar-height));
  transition: var(--transition);
}

/* ============ PAGE HEADER ============ */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.page-header h1 { font-size: 22px; font-weight: 700; color: var(--dark); }
.breadcrumb { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--gray-500); margin-top: 2px; }
.breadcrumb a { color: var(--gray-500); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 10px; }

/* ============ CARDS ============ */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}

.card-title { font-size: 15px; font-weight: 700; color: var(--dark); display: flex; align-items: center; gap: 8px; }
.card-title i { color: var(--primary); }
.card-body { padding: 20px; }
.card-footer { padding: 14px 20px; border-top: 1px solid var(--gray-200); background: var(--gray-50); }

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

.stat-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  padding: 20px;
  display: flex; align-items: center; gap: 16px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.stat-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; flex-shrink: 0;
}
.stat-icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-icon.green { background: var(--success-light); color: var(--success); }
.stat-icon.yellow { background: var(--warning-light); color: var(--warning); }
.stat-icon.red { background: var(--danger-light); color: var(--danger); }
.stat-icon.cyan { background: var(--info-light); color: var(--info); }
.stat-icon.purple { background: #f3e8ff; color: #7c3aed; }

.stat-info .value { font-size: 26px; font-weight: 800; color: var(--dark); line-height: 1; }
.stat-info .label { font-size: 12px; color: var(--gray-500); margin-top: 4px; font-weight: 500; }
.stat-info .change { font-size: 11px; margin-top: 4px; }
.stat-info .change.up { color: var(--success); }
.stat-info .change.down { color: var(--danger); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 8px;
  border: 1px solid transparent; font-size: 13.5px;
  font-weight: 600; cursor: pointer; transition: var(--transition);
  white-space: nowrap; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn-lg { padding: 11px 22px; font-size: 15px; }
.btn-block { width: 100%; justify-content: center; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #15803d; border-color: #15803d; }
.btn-warning { background: var(--warning); border-color: var(--warning); color: #fff; }
.btn-warning:hover { background: #d97706; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-outline { background: transparent; border-color: var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { background: var(--gray-100); }
.btn-outline-primary { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary-light); }
.btn-info { background: var(--info); border-color: var(--info); color: #fff; }

/* ============ FORMS ============ */
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.form-label .required { color: var(--danger); }

.form-control {
  width: 100%; padding: 9px 13px;
  border: 1.5px solid var(--gray-300);
  border-radius: 8px; font-size: 13.5px;
  color: var(--gray-800); background: var(--white);
  transition: var(--transition); outline: none;
  font-family: inherit;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.form-control::placeholder { color: var(--gray-400); }
.form-control.is-invalid { border-color: var(--danger); }
.form-hint { font-size: 11.5px; color: var(--gray-500); margin-top: 4px; }
.invalid-feedback { font-size: 12px; color: var(--danger); margin-top: 4px; }

select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 10px center; background-size: 18px; padding-right: 36px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-grid.full { grid-column: 1 / -1; }

.input-group { display: flex; }
.input-group .form-control { border-radius: 8px 0 0 8px; }
.input-group .input-addon { display: flex; align-items: center; padding: 0 12px; background: var(--gray-100); border: 1.5px solid var(--gray-300); border-left: none; border-radius: 0 8px 8px 0; color: var(--gray-500); }

/* ============ TABLES ============ */
.table-wrapper { overflow-x: auto; }

.table { width: 100%; border-collapse: collapse; }
.table th { padding: 11px 14px; text-align: left; font-size: 11.5px; font-weight: 700; color: var(--gray-600); text-transform: uppercase; letter-spacing: .05em; background: var(--gray-50); border-bottom: 2px solid var(--gray-200); white-space: nowrap; }
.table td { padding: 12px 14px; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); vertical-align: middle; }
.table tbody tr:hover { background: var(--gray-50); }
.table .actions { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

/* ============ BADGES ============ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 9px; 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: #92400e; }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-secondary { background: var(--gray-100); color: var(--gray-600); }

/* ============ ALERTS ============ */
.alert {
  padding: 12px 16px; border-radius: var(--border-radius);
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px; font-size: 13.5px; font-weight: 500;
}
.alert-success { background: var(--success-light); color: #15803d; border: 1px solid #bbf7d0; }
.alert-danger { background: var(--danger-light); color: #b91c1c; border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-light); color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: var(--info-light); color: #0e7490; border: 1px solid #a5f3fc; }

/* ============ SEAT MAP ============ */
.seat-map { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; }
.seat-box {
  width: 60px; height: 60px;
  border-radius: 10px; border: 2px solid;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; cursor: pointer;
  transition: var(--transition); text-align: center; line-height: 1.2;
}
.seat-box:hover { transform: scale(1.05); }
.seat-available { background: #dcfce7; border-color: var(--success); color: var(--success); }
.seat-occupied { background: var(--danger-light); border-color: var(--danger); color: var(--danger); }
.seat-reserved { background: var(--warning-light); border-color: var(--warning); color: #92400e; }
.seat-maintenance { background: var(--gray-100); border-color: var(--gray-300); color: var(--gray-500); }

.seat-legend { display: flex; gap: 20px; flex-wrap: wrap; padding: 12px 16px; border-top: 1px solid var(--gray-200); }
.legend-item { display: flex; align-items: center; gap: 8px; font-size: 12px; }
.legend-dot { width: 14px; height: 14px; border-radius: 4px; }

/* ============ SEARCH / FILTER BAR ============ */
.filter-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.search-box { position: relative; }
.search-box input { padding-left: 36px; min-width: 240px; }
.search-box i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--gray-400); }

/* ============ PAGINATION ============ */
.pagination { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 6px 11px; border-radius: 6px; font-size: 13px; font-weight: 500;
  border: 1.5px solid var(--gray-200); color: var(--gray-600); display: flex; align-items: center;
  transition: var(--transition);
}
.pagination a:hover { background: var(--primary-light); border-color: var(--primary); color: var(--primary); text-decoration: none; }
.pagination span.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination span.disabled { color: var(--gray-300); cursor: default; }

/* ============ LOGIN PAGE ============ */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  width: 100%; max-width: 420px;
  box-shadow: 0 25px 50px rgba(0,0,0,.25);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .icon { width: 64px; height: 64px; background: var(--primary); border-radius: 16px; display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; font-size: 28px; color: #fff; }
.login-logo h1 { font-size: 22px; font-weight: 800; color: var(--dark); }
.login-logo p { font-size: 13px; color: var(--gray-500); }
.login-title { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 20px; }
.login-card .form-control { padding: 11px 14px; }

/* ============ PROFILE PHOTO ============ */
.profile-img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 3px solid var(--gray-200); }
.photo-placeholder { width: 80px; height: 80px; border-radius: 50%; background: var(--primary-light); display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--primary); border: 3px solid var(--gray-200); }

/* ============ CHART CONTAINERS ============ */
.chart-container { position: relative; height: 280px; }

/* ============ TABS ============ */
.tabs { display: flex; border-bottom: 2px solid var(--gray-200); margin-bottom: 20px; gap: 0; }
.tab-btn { padding: 10px 20px; font-size: 13.5px; font-weight: 600; color: var(--gray-500); border: none; background: none; cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -2px; transition: var(--transition); }
.tab-btn:hover { color: var(--primary); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ============ MODAL ============ */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 9999; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.open { display: flex; }
.modal { background: #fff; border-radius: 14px; width: 100%; max-width: 560px; box-shadow: var(--shadow-lg); animation: slideUp .25s ease; }
.modal-header { padding: 18px 24px; border-bottom: 1px solid var(--gray-200); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: 16px; font-weight: 700; color: var(--dark); }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--gray-400); }
.modal-body { padding: 24px; }
.modal-footer { padding: 14px 24px; border-top: 1px solid var(--gray-200); display: flex; justify-content: flex-end; gap: 10px; }

@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* ============ LOADING ============ */
.loading-spinner { display: inline-block; width: 20px; height: 20px; border: 3px solid var(--gray-200); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid.cols-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .topbar { left: 0; }
  .topbar-toggle { display: block; }
  .main-content { margin-left: 0; padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar > * { width: 100%; }
  .login-card { padding: 28px 20px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .table th, .table td { padding: 8px 10px; }
}

/* ============ OVERLAY (mobile sidebar) ============ */
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 999; }
.sidebar-overlay.active { display: block; }

/* ============ PRINT ============ */
@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main-content { margin: 0; padding: 0; }
  body { background: #fff; }
}

/* ============ MISC ============ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.fw-bold { font-weight: 700; }
.mb-0 { margin-bottom: 0 !important; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-4 { margin-top: 16px; }
.d-flex { display: flex; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.w-100 { width: 100%; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.empty-state { text-align: center; padding: 60px 20px; }
.empty-state i { font-size: 48px; color: var(--gray-300); margin-bottom: 12px; display: block; }
.empty-state h3 { font-size: 16px; color: var(--gray-500); font-weight: 600; }
.empty-state p { color: var(--gray-400); font-size: 13px; margin-top: 4px; }

.divider { border: none; border-top: 1px solid var(--gray-200); margin: 20px 0; }

/* ============ TABLE WRAPPER (horizontal scroll on mobile) ============ */
.table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrapper table { min-width: 600px; }

/* ============ FORM HINT ============ */
.form-hint { font-size: 11px; color: var(--gray-400); margin-top: 3px; }

/* ============ MOBILE — ENHANCED ============ */
@media (max-width: 768px) {
  /* Topbar: prevent title from wrapping / overflowing */
  .topbar { padding: 0 12px; gap: 8px; }
  .topbar-title {
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: calc(100vw - 200px);
  }
  .topbar-right { gap: 6px; flex-shrink: 0; }
  .topbar-right .btn { padding: 7px 10px; font-size: 12px; }

  /* Main content area */
  .main-content { padding: 12px; }

  /* Page header: stack on narrow screens */
  .page-header {
    gap: 10px;
    margin-bottom: 16px;
  }
  .page-header h1 { font-size: 18px; }
  .page-header .breadcrumb { font-size: 11px; }

  /* Stats grid: 2-column minimum on mobile */
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 12px; gap: 10px; }
  .stat-card .stat-icon { width: 36px; height: 36px; font-size: 16px; }
  .stat-card .stat-number,
  .stat-card .value { font-size: 20px; }

  /* Cards */
  .card { border-radius: 10px; }
  .card-header { padding: 12px 14px; flex-wrap: wrap; gap: 8px; }
  .card-body { padding: 14px; }

  /* Tables: let them scroll horizontally */
  .table th, .table td { padding: 8px 10px; font-size: 12px; white-space: nowrap; }
  /* Override white-space only for columns that should wrap */
  .table td:first-child { white-space: normal; }

  /* Buttons in table rows */
  .table .btn-sm { padding: 4px 8px; font-size: 11px; }

  /* Modals: full-width on mobile */
  .modal-overlay { padding: 10px; align-items: flex-end; }
  .modal {
    max-width: 100%;
    width: 100%;
    border-radius: 16px 16px 0 0;
    max-height: 90vh;
    overflow-y: auto;
  }
  .modal-body { padding: 16px; }
  .modal-footer { padding: 12px 16px; }

  /* Filter bar */
  .filter-bar { gap: 8px; }
  .filter-bar .btn, .filter-bar select, .filter-bar input { font-size: 12px; padding: 7px 10px; }

  /* Badges */
  .badge { font-size: 10px; padding: 3px 7px; }

  /* Alerts */
  .alert { font-size: 13px; padding: 10px 12px; }

  /* Tabs on mobile: scrollable */
  .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; flex-wrap: nowrap; }
  .tab-btn { white-space: nowrap; padding: 8px 14px; font-size: 12px; }

  /* Grid forms: single column on very small screens */
  .form-grid.force-two { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  /* Extra small screens */
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat-card .stat-number,
  .stat-card .value { font-size: 18px; }
  .stat-card .stat-label,
  .stat-card .label { font-size: 10px; }

  /* Page header: full column layout */
  .page-header { flex-direction: column; align-items: stretch; }
  .page-header > *:last-child { align-self: flex-start; }

  /* Tables: smaller font */
  .table th, .table td { padding: 6px 8px; font-size: 11px; }

  /* Sidebar footer: compact */
  .sidebar-footer { padding: 10px 14px; }
  .user-info .name { font-size: 12px; }
  .user-info .role { font-size: 10px; }

  /* Hide less critical badge labels on tiny screens */
  .topbar-title { max-width: calc(100vw - 160px); }
}