:root {
  --primary: #1976d2;
  --success: #2e7d32;
  --danger: #d32f2f;
  --warning: #f57c00;
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #333333;
  --border: #cfd8dc;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--text);
  padding-bottom: 40px;
}

.app-header {
  background-color: var(--primary);
  color: white;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.role-switcher {
  display: flex;
  gap: 8px;
}

.role-switcher button {
  background: rgba(255,255,255,0.2);
  border: none;
  color: white;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}

.role-switcher button.active {
  background: white;
  color: var(--primary);
}

.container {
  max-width: 1050px;
  margin: 24px auto;
  padding: 0 16px;
}

.view-section {
  display: none;
  background: var(--surface);
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

.hidden {
  display: none !important;
}

.admin-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.sub-heading {
  color: #666;
  font-size: 0.95rem;
}

.admin-tabs button {
  background: #e0e0e0;
  border: none;
  padding: 8px 14px;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
}

.admin-tabs button.active {
  background: var(--primary);
  color: white;
}

.btn-settings {
  background-color: #f0f4f8;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 8px 16px;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.btn-settings:hover {
  background-color: var(--primary);
  color: white;
}

.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-weight: 600;
  font-size: 0.9rem;
}

input, select {
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 1rem;
  width: 100%;
}

.form-btn-group {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.gps-group {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.status-text {
  font-size: 0.85rem;
  color: #666;
}

.collector-status-bar {
  background: #e3f2fd;
  border: 1px solid #bbdefb;
  padding: 12px;
  border-radius: 6px;
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  background: var(--primary);
  color: white;
  padding: 3px 8px;
  border-radius: 12px;
  font-weight: bold;
  font-size: 0.85rem;
}

.signature-container {
  margin: 20px 0;
}

.signature-canvas {
  border: 2px dashed var(--border);
  border-radius: 6px;
  background-color: #fafafa;
  width: 100%;
  height: 180px;
  touch-action: none;
  cursor: crosshair;
}

.signature-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 4px;
}

.btn-text {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-weight: 600;
}

.btn-primary, .btn-secondary, .btn-success, .btn-warning {
  padding: 10px 16px;
  border: none;
  border-radius: 4px;
  font-weight: bold;
  cursor: pointer;
  font-size: 0.95rem;
}

.btn-primary { background-color: var(--primary); color: white; flex: 1; }
.btn-secondary { background-color: #e0e0e0; color: #333; flex: 1; }
.btn-success { background-color: var(--success); color: white; }
.btn-warning { background-color: var(--warning); color: white; }

.action-btns {
  display: flex;
  gap: 4px;
}

.btn-edit-sm {
  background-color: var(--warning);
  color: white;
  border: none;
  padding: 4px 8px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.75rem;
}

.btn-danger-sm {
  background-color: var(--danger);
  color: white;
  border: none;
  padding: 4px 8px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.75rem;
}

.tracking-controls {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.tracking-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border: 1px solid var(--border);
  font-size: 0.9rem;
}

.tracking-table th, .tracking-table td {
  padding: 10px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

.tracking-table th {
  background-color: #e3f2fd;
  color: var(--primary);
}

.no-data {
  text-align: center;
  color: #666;
  font-style: italic;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  width: 95%;
  max-width: 1100px;
  max-height: 85vh;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

.modal-header {
  padding: 16px 20px;
  background: #f4f6f8;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: #666;
}

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

.admin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media(min-width: 768px) {
  .admin-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .full-width-card {
    grid-column: span 3;
  }
}

.admin-card {
  background: #fafafa;
  border: 1px solid var(--border);
  padding: 14px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.inline-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media(min-width: 600px) {
  .inline-form {
    flex-direction: row;
  }
}

.list-container {
  margin-top: 8px;
  background: white;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  max-height: 150px;
  overflow-y: auto;
}

.list-container ul {
  list-style: none;
}

.list-container li {
  font-size: 0.85rem;
  padding: 6px 4px;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
}