/* =====================================================
   Crest Test Systems – Logistics Management System
   Main Stylesheet
   ===================================================== */

/* CSS Variables */
:root {
  --primary: #1a56db;
  --primary-dark: #1344b4;
  --primary-light: #e8f0fe;
  --secondary: #0e7490;
  --success: #057a55;
  --success-light: #d1fae5;
  --warning: #c27803;
  --warning-light: #fef3c7;
  --danger: #c81e1e;
  --danger-light: #fee2e2;
  --info: #1c64f2;
  --info-light: #e1effe;
  --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-width: 260px;
  --topbar-height: 64px;
  --radius: 8px;
  --radius-lg: 12px;
  --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,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.1), 0 4px 6px rgba(0,0,0,.05);
  --transition: 0.2s ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  color: var(--gray-800);
  background: var(--gray-100);
  line-height: 1.6;
}

/* ========== LOGIN SCREEN ========== */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a56db 0%, #0e7490 100%);
  padding: 20px;
}

.login-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.logo-circle {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin-bottom: 12px;
  box-shadow: 0 8px 20px rgba(26,86,219,.3);
}

.login-logo h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-800);
}

.login-logo p {
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 4px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group label i {
  margin-right: 6px;
  color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: 'Inter', sans-serif;
  color: var(--gray-800);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}

.password-wrap {
  position: relative;
}

.password-wrap input {
  padding-right: 44px;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gray-400);
  padding: 0;
  font-size: 15px;
}

.login-error {
  background: var(--danger-light);
  color: var(--danger);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 16px;
  border-left: 3px solid var(--danger);
}

.login-footer {
  text-align: center;
  font-size: 12px;
  color: var(--gray-400);
  margin-top: 24px;
}

/* ========== APP SHELL ========== */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ========== SIDEBAR ========== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--gray-900);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 1000;
  overflow-y: auto;
  transition: transform var(--transition);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
  flex-shrink: 0;
}

.logo-title {
  font-size: 16px;
  font-weight: 700;
  display: block;
  color: #fff;
}

.logo-sub {
  font-size: 10px;
  color: var(--gray-400);
  display: block;
}

.sidebar-close {
  display: none;
  background: none;
  border: none;
  color: var(--gray-400);
  font-size: 18px;
  cursor: pointer;
}

.sidebar-user {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-nav {
  flex: 1;
  padding: 8px 0;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gray-500);
  padding: 12px 16px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--gray-300);
  text-decoration: none;
  border-radius: 0;
  font-size: 13.5px;
  font-weight: 400;
  transition: background var(--transition), color var(--transition);
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

.nav-item.active {
  background: rgba(26,86,219,.2);
  color: #fff;
  border-left-color: var(--primary);
  font-weight: 500;
}

.nav-item i {
  width: 18px;
  text-align: center;
  font-size: 14px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,.08);
}

.btn-logout {
  width: 100%;
  padding: 10px;
  background: rgba(200,30,30,.15);
  border: 1px solid rgba(200,30,30,.3);
  border-radius: var(--radius);
  color: #fc8181;
  font-size: 13px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-logout:hover { background: rgba(200,30,30,.25); }

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

.topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

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

.breadcrumb {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.user-name-tag {
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-700);
}

.user-role-tag {
  font-size: 11px;
  color: var(--gray-400);
}

/* ========== CONTENT AREA ========== */
.content-area {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

/* ========== CARDS ========== */
.card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title i {
  color: var(--primary);
}

.card-body {
  padding: 20px 24px;
}

/* ========== STAT CARDS ========== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
  border-left: 4px solid transparent;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-card.blue { border-left-color: var(--primary); }
.stat-card.green { border-left-color: var(--success); }
.stat-card.yellow { border-left-color: var(--warning); }
.stat-card.red { border-left-color: var(--danger); }
.stat-card.teal { border-left-color: var(--secondary); }

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.stat-card.blue .stat-icon { background: var(--primary-light); color: var(--primary); }
.stat-card.green .stat-icon { background: var(--success-light); color: var(--success); }
.stat-card.yellow .stat-icon { background: var(--warning-light); color: var(--warning); }
.stat-card.red .stat-icon { background: var(--danger-light); color: var(--danger); }
.stat-card.teal .stat-icon { background: #cffafe; color: var(--secondary); }

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--gray-800);
  line-height: 1.2;
}

.stat-label {
  font-size: 12px;
  color: var(--gray-500);
  margin-top: 2px;
}

/* ========== BUTTONS ========== */
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--transition), box-shadow var(--transition);
  font-family: 'Inter', sans-serif;
  text-decoration: none;
}

.btn-primary:hover { background: var(--primary-dark); box-shadow: var(--shadow-md); }
.btn-primary:disabled { background: var(--gray-300); cursor: not-allowed; }

.btn-secondary {
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--transition);
  font-family: 'Inter', sans-serif;
}

.btn-secondary:hover { background: var(--gray-200); }

.btn-success {
  background: var(--success);
  color: #fff;
  border: none;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  transition: opacity var(--transition);
}

.btn-success:hover { opacity: .9; }

.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  transition: opacity var(--transition);
}

.btn-danger:hover { opacity: .9; }

.btn-warning {
  background: var(--warning);
  color: #fff;
  border: none;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Inter', sans-serif;
  transition: opacity var(--transition);
}

.btn-warning:hover { opacity: .9; }

.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; padding: 12px; }

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius);
  font-size: 14px;
  transition: background var(--transition);
  font-family: 'Inter', sans-serif;
}

.btn-icon:hover { background: var(--gray-100); }
.btn-icon.edit { color: var(--primary); }
.btn-icon.delete { color: var(--danger); }
.btn-icon.view { color: var(--secondary); }
.btn-icon.print { color: var(--success); }

/* ========== TABLES ========== */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

table th {
  background: var(--gray-50);
  padding: 11px 14px;
  text-align: left;
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--gray-500);
  border-bottom: 1px 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 tr:last-child td { border-bottom: none; }
table tr:hover td { background: var(--gray-50); }

/* ========== BADGES ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 11.5px;
  font-weight: 500;
  gap: 5px;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-secondary { background: var(--gray-100); color: var(--gray-600); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

/* ========== FORMS ========== */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-group select {
  cursor: pointer;
}

.form-row {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  flex-wrap: wrap;
}

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

/* ========== SEARCH BAR ========== */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.search-input-wrap {
  flex: 1;
  position: relative;
  min-width: 200px;
}

.search-input-wrap i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 14px;
}

.search-input-wrap input {
  width: 100%;
  padding: 9px 12px 9px 36px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: 13.5px;
  font-family: 'Inter', sans-serif;
  outline: none;
  transition: border-color var(--transition);
}

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

/* ========== MODAL ========== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn .15s ease;
}

.modal-dialog {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: slideUp .2s ease;
}

.modal-dialog.modal-lg { max-width: 860px; }
.modal-dialog.modal-sm { max-width: 460px; }

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--gray-800);
}

.modal-close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 18px;
  color: var(--gray-400);
  padding: 4px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}

.modal-close:hover { color: var(--gray-700); background: var(--gray-100); }

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  flex-shrink: 0;
}

/* ========== TOAST ========== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  min-width: 280px;
  max-width: 380px;
  padding: 14px 16px;
  border-radius: var(--radius);
  color: #fff;
  font-size: 13.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-lg);
  animation: slideUp .25s ease;
  cursor: pointer;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--primary); }

/* ========== PAGE HEADER ========== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-header h2 i { color: var(--primary); }

/* ========== ITEMS TABLE IN FORMS ========== */
.items-table-wrap {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow-x: auto;
  margin-top: 8px;
}

.items-table-wrap table th,
.items-table-wrap table td {
  padding: 8px 10px;
}

.items-table-wrap table th { background: var(--gray-50); }
.items-table-wrap input { border: 1px solid var(--gray-200); padding: 6px 8px; border-radius: 4px; width: 100%; font-size: 13px; font-family: 'Inter', sans-serif; }
.items-table-wrap input:focus { outline: none; border-color: var(--primary); }

/* ========== CHART CONTAINERS ========== */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.chart-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}

.chart-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 16px;
}

.chart-container {
  position: relative;
  height: 260px;
}

/* ========== PRINT ========== */
.print-preview {
  background: #fff;
  padding: 30px;
  max-width: 800px;
  margin: 0 auto;
  font-size: 12px;
}

.print-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 2px solid var(--gray-800);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.print-company h2 { font-size: 18px; font-weight: 700; }
.print-company p { color: var(--gray-600); font-size: 11px; }

.print-title {
  text-align: center;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin: 16px 0;
  padding: 8px;
  background: var(--gray-100);
  border-radius: 4px;
}

.print-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.print-meta p { font-size: 12px; }
.print-meta strong { color: var(--gray-800); }

/* ========== UTILITY ========== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-400); font-size: 12px; }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-16 { margin-bottom: 16px; }
.fw-600 { font-weight: 600; }
.d-flex { display: flex; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--gray-400);
}

.empty-state i { font-size: 48px; margin-bottom: 12px; display: block; }
.empty-state p { font-size: 14px; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 999;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-close { display: flex; }
  .sidebar-overlay.active { display: block; }

  .main-content {
    margin-left: 0;
  }

  .hamburger { display: flex; }
  .content-area { padding: 16px; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .search-bar { flex-direction: column; }
  .search-input-wrap { min-width: 100%; }
  .modal-dialog { max-height: 95vh; margin: 8px; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .login-card { padding: 24px 20px; }
  .user-name-tag { display: none; }
}

/* ========== PRINT MEDIA ========== */
@media print {
  .sidebar, .topbar, .btn-primary, .btn-secondary, .btn-danger, .page-header .btn-primary, .no-print {
    display: none !important;
  }
  .main-content { margin-left: 0 !important; }
  .content-area { padding: 0 !important; }
  body { background: #fff; }
  .card { box-shadow: none; }
}

/* ========== SECTION TABS ========== */
.tab-bar {
  display: flex;
  border-bottom: 2px solid var(--gray-200);
  margin-bottom: 20px;
  gap: 4px;
  overflow-x: auto;
}

.tab-btn {
  padding: 10px 18px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--gray-500);
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
  font-family: 'Inter', sans-serif;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-btn:hover { color: var(--gray-800); }

/* Type badges for challans */
.type-returnable { background: #e1effe; color: #1c64f2; }
.type-non-returnable { background: #fef3c7; color: #c27803; }