:root {
  --primary: #1e40af;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-border: #bfdbfe;
  
  --secondary: #0f766e;
  --secondary-light: #f0fdfa;
  
  --success: #15803d;
  --success-bg: #dcfce7;
  --success-text: #166534;
  --success-border: #86efac;
  
  --warning: #b45309;
  --warning-bg: #fef3c7;
  --warning-text: #92400e;
  --warning-border: #fcd34d;

  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
  --danger-border: #fca5a5;

  --info: #0369a1;
  --info-bg: #e0f2fe;
  --info-text: #075985;
  --info-border: #7dd3fc;

  --neutral-dark: #1e293b;
  --neutral-gray: #64748b;
  --neutral-light: #f8fafc;
  --border-color: #e2e8f0;
  --card-bg: #ffffff;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
  --radius-sm: 6px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: #f1f5f9;
  color: var(--neutral-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
header.app-header {
  background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%);
  color: #ffffff;
  padding: 0.9rem 1.75rem;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.25);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  background: rgba(255, 255, 255, 0.18);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  backdrop-filter: blur(4px);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand-text p {
  font-size: 0.82rem;
  opacity: 0.88;
  font-weight: 300;
}

.nav-tabs {
  display: flex;
  background: rgba(15, 23, 42, 0.25);
  padding: 4px;
  border-radius: 10px;
  gap: 4px;
}

.nav-tab-btn {
  background: transparent;
  color: #e2e8f0;
  border: none;
  padding: 0.55rem 1.1rem;
  border-radius: 7px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.nav-tab-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.nav-tab-btn.active {
  background: #ffffff;
  color: #1e3a8a;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Main Container */
main.container {
  max-width: 1400px;
  width: 100%;
  margin: 1.5rem auto;
  padding: 0 1.25rem 2rem 1.25rem;
  flex: 1;
}

.page-view {
  display: none;
  animation: fadeIn 0.25s ease-in-out;
}

.page-view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card Styles */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--neutral-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Stat Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  background: #ffffff;
  padding: 1.15rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.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: 1.6rem;
  flex-shrink: 0;
}

.stat-icon.total { background: #dbeafe; color: #1d4ed8; }
.stat-icon.driver { background: #e0e7ff; color: #4338ca; }
.stat-icon.conductor { background: #fef3c7; color: #b45309; }
.stat-icon.ready { background: #dcfce7; color: #15803d; }
.stat-icon.inactive { background: #fee2e2; color: #b91c1c; }

.stat-info .stat-value {
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--neutral-dark);
}

.stat-info .stat-label {
  font-size: 0.85rem;
  color: var(--neutral-gray);
  margin-top: 0.25rem;
}

/* Filter Controls */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: flex-end;
  background: #ffffff;
  padding: 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
  min-width: 170px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--neutral-gray);
}

.form-control {
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--neutral-dark);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.btn-secondary { background: #f1f5f9; color: #475569; border-color: #cbd5e1; }
.btn-secondary:hover { background: #e2e8f0; color: #1e293b; }

.btn-success { background: #16a34a; color: #fff; }
.btn-success:hover { background: #15803d; }

.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-outline { background: #ffffff; color: var(--neutral-dark); border-color: var(--border-color); }
.btn-outline:hover { background: #f8fafc; border-color: #94a3b8; }

.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.8rem; }

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.badge-normal {
  background: var(--success-bg);
  color: var(--success-text);
  border: 1px solid var(--success-border);
}
.badge-normal .badge-dot { background: var(--success); }

.badge-sick {
  background: var(--danger-bg);
  color: var(--danger-text);
  border: 1px solid var(--danger-border);
}
.badge-sick .badge-dot { background: var(--danger); }

.badge-pr {
  background: var(--info-bg);
  color: var(--info-text);
  border: 1px solid var(--info-border);
}
.badge-pr .badge-dot { background: var(--info); }

.badge-other {
  background: var(--warning-bg);
  color: var(--warning-text);
  border: 1px solid var(--warning-border);
}
.badge-other .badge-dot { background: var(--warning); }

/* Position Badges */
.badge-pos {
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 500;
}
.badge-driver { background: #e0e7ff; color: #3730a3; }
.badge-conductor { background: #fef3c7; color: #92400e; }

.badge-shift {
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.76rem;
}
.badge-shift-morning { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.badge-shift-afternoon { background: #fff7ed; color: #c2410c; border: 1px solid #fed7aa; }

/* Line Cards for Supervisor Overview */
.lines-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(430px, 1fr));
  gap: 1.25rem;
}

.line-card {
  background: #ffffff;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}

.line-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.line-card-header {
  background: linear-gradient(to right, #f8fafc, #edf2f7);
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.line-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1e3a8a;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.line-card-body {
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex: 1;
}

.mini-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  background: #f8fafc;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #f1f5f9;
  text-align: center;
}

.mini-stat-item .num {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--neutral-dark);
}

.mini-stat-item .lbl {
  font-size: 0.72rem;
  color: var(--neutral-gray);
  margin-top: 2px;
}

.status-alert-box {
  background: #fff1f2;
  border: 1px solid #fecdd3;
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  color: #9f1239;
}

.line-card-footer {
  padding: 0.75rem 1.25rem;
  background: #fafafa;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Tables */
.table-container {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background: #fff;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

table.data-table th {
  background-color: #f8fafc;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: #475569;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

table.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}

table.data-table tr:hover {
  background-color: #f8fafc;
}

.table-salary {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 600;
  color: #1e40af;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border-radius: var(--radius);
  max-width: 550px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalScale 0.2s ease-out;
  display: flex;
  flex-direction: column;
  max-height: 90vh;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.1rem 1.4rem;
  background: #f8fafc;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--neutral-dark);
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 1.25rem;
  color: var(--neutral-gray);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
}

.modal-close-btn:hover {
  background: #e2e8f0;
  color: var(--neutral-dark);
}

.modal-body {
  padding: 1.4rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-footer {
  padding: 1rem 1.4rem;
  background: #f8fafc;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: #1e293b;
  color: #ffffff;
  padding: 0.75rem 1.2rem;
  border-radius: 8px;
  font-size: 0.88rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  animation: toastIn 0.25s ease-out;
}

.toast.toast-success { background: #166534; }
.toast.toast-danger { background: #991b1b; }
.toast.toast-info { background: #1e40af; }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Print styles */
@media print {
  header.app-header, .filter-bar, .nav-tabs, .btn, .modal-overlay {
    display: none !important;
  }
  body, main.container {
    background: #fff;
    margin: 0;
    padding: 0;
  }
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .nav-tabs { width: 100%; overflow-x: auto; }
  .lines-grid { grid-template-columns: 1fr; }
  .mini-stats-row { grid-template-columns: repeat(2, 1fr); }
}