/* ========================================
   CSS CUSTOM PROPERTIES — DARK THEME
   ======================================== */
:root {
  --bg-primary: #0b0e1a;
  --bg-secondary: #111528;
  --bg-card: #1a1f38;
  --bg-card-hover: #232a48;
  --bg-input: #0f1325;
  --bg-modal-overlay: rgba(0, 0, 0, 0.6);

  --text-primary: #e8eaf4;
  --text-secondary: #9ca3be;
  --text-muted: #6b7494;

  --accent: #2a3890;
  --accent-hover: #3d4fa8;
  --accent-subtle: rgba(42, 56, 144, 0.2);

  --danger: #ef4444;
  --danger-hover: #f87171;
  --warning: #f59e0b;
  --success: #22c55e;

  --border: #252a48;
  --border-focus: #2a3890;

  --radius: 8px;
  --radius-lg: 12px;
  --radius-sm: 6px;

  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);

  --sidebar-width: 240px;
  --transition: all 0.2s ease;
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ========================================
   LOGIN VIEW
   ======================================== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-primary) 0%, #0d1230 100%);
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}

.login-logo {
  display: block;
  width: 100px;
  height: 100px;
  margin: 0 auto 20px;
  border-radius: var(--radius-lg);
  object-fit: contain;
  background: #fff;
  padding: 8px;
  box-shadow: 0 4px 20px rgba(42, 56, 144, 0.3);
}

.login-title {
  font-size: 28px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 4px;
  background: linear-gradient(135deg, #3d4fa8, #848cbd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 13px;
}

/* ========================================
   FORMS
   ======================================== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group small {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
  margin-top: 4px;
}

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

.form-group-full {
  margin-top: 4px;
}

.auto-date-display {
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 14px;
  font-style: italic;
}

.auto-date-display.has-value {
  color: var(--text-primary);
  font-style: normal;
  font-weight: 600;
}

.form-group textarea {
  resize: vertical;
  min-height: 60px;
  font-family: inherit;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 12px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

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

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-full {
  width: 100%;
}

.btn-icon {
  padding: 6px 10px;
  font-size: 14px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
}
.btn-icon:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}
.btn-icon.danger:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* ========================================
   LAYOUT — SIDEBAR + MAIN
   ======================================== */
#app-view {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  object-fit: contain;
  background: #fff;
  padding: 3px;
  flex-shrink: 0;
}

.sidebar-header h2 {
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(135deg, #3d4fa8, #848cbd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  list-style: none;
  padding: 12px 8px;
  flex: 1;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  margin-bottom: 2px;
}

.nav-link:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.nav-link.active {
  background: var(--accent-subtle);
  color: var(--accent);
  font-weight: 600;
}

.nav-icon {
  font-size: 16px;
  width: 22px;
  text-align: center;
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  font-size: 13px;
}

.role-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.role-badge.admin {
  background: var(--accent-subtle);
  color: var(--accent);
}

.role-badge.user {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

/* ========================================
   MAIN CONTENT
   ======================================== */
.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-header h1 {
  font-size: 24px;
  font-weight: 700;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* ========================================
   FILTER BAR
   ======================================== */
.filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.filter-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.filter-row + .filter-row {
  margin-top: 14px;
}

.filter-group {
  flex: 1;
  min-width: 160px;
}

.filter-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.filter-group input,
.filter-group select {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
}

.filter-group input:focus,
.filter-group select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px var(--accent-subtle);
}

.customer-filter-active {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  color: var(--accent);
  font-size: 13px;
}

/* Quick Filter Buttons */
.quick-filters {
  display: flex;
  gap: 4px;
}

.qf-btn {
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.qf-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.qf-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* ========================================
   DATA TABLE
   ======================================== */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: var(--bg-secondary);
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  user-select: none;
}

.data-table th.sortable {
  cursor: pointer;
  transition: var(--transition);
}

.data-table th.sortable:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.data-table th.sort-asc::after {
  content: ' ▲';
  font-size: 10px;
  color: var(--accent);
}

.data-table th.sort-desc::after {
  content: ' ▼';
  font-size: 10px;
  color: var(--accent);
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-primary);
}

.data-table tbody tr {
  transition: var(--transition);
}

.data-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.cell-actions {
  display: flex;
  gap: 4px;
}

/* Expiration Badges */
.exp-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.exp-badge.active {
  background: rgba(34, 197, 94, 0.12);
  color: var(--success);
}

.exp-badge.warning {
  background: rgba(245, 158, 11, 0.12);
  color: var(--warning);
}

.exp-badge.expired {
  background: rgba(239, 68, 68, 0.12);
  color: var(--danger);
}

.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* Import Modal */
.import-info {
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 13px;
}

.import-preview-table {
  max-height: 300px;
  overflow-y: auto;
}

.import-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  margin: 24px 0 12px;
}

.import-progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 4px;
  transition: width 0.2s ease;
}

.import-progress-text {
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

.import-result-text {
  text-align: center;
  color: var(--success);
  font-size: 15px;
  font-weight: 600;
  padding: 20px 0;
}

/* Customer link in table */
.customer-link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}
.customer-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* ========================================
   MODAL
   ======================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: var(--bg-modal-overlay);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 28px;
  animation: modalIn 0.2s ease;
}

.modal-content.modal-sm {
  max-width: 420px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: var(--transition);
}
.modal-close:hover {
  color: var(--text-primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 24px;
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .main-content {
    padding: 16px;
  }

  .filter-row {
    flex-direction: column;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}