:root {
  --sidebar-width: 220px;
  --bg-dark: #131c2e;
  --bg-medium: #182540;
  --bg-light: #1e3050;
  --bg-card: #1c2e4a;
  --bg-card-hover: #243a5c;
  --text-primary: #e8ecf1;
  --text-secondary: #e0c8a0;
  --text-muted: #8a9bb5;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --border-color: #2a4060;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: linear-gradient(160deg, #131c2e 0%, #182540 30%, #1a2d4d 60%, #1e3555 100%);
  background-attachment: fixed;
  min-height: 100vh;
  color: var(--text-primary);
  --bs-secondary-color: #e0c8a0;
  --bs-body-color: #e8ecf1;
  --bs-emphasis-color: #e8ecf1;
}

/* Navbar */
.navbar {
  background: var(--bg-medium) !important;
  border-bottom: 1px solid var(--border-color);
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  min-height: calc(100vh - 56px);
  position: sticky;
  top: 56px;
  background: var(--bg-medium) !important;
  border-right: 1px solid var(--border-color);
}

.sidebar-link {
  color: var(--text-secondary) !important;
  border-radius: 8px;
  padding: 10px 14px;
  transition: all 0.2s;
}
.sidebar-link:hover {
  color: var(--text-primary) !important;
  background: rgba(59, 130, 246, 0.15);
}
.sidebar-link.active {
  color: #fff !important;
  background: var(--accent);
  font-weight: 500;
}

/* Main content */
.main-content {
  min-height: calc(100vh - 56px);
  max-width: 1400px;
}

/* Override Bootstrap bg classes */
.bg-light { background: var(--bg-dark) !important; }
.bg-dark { background: var(--bg-medium) !important; }

/* Login screen */
#login-screen {
  background: linear-gradient(160deg, #131c2e 0%, #182540 30%, #1a2d4d 60%, #1e3555 100%) !important;
}
#login-screen .card {
  background: #ffffff !important;
  border: none;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
#login-screen .form-label {
  color: #374151;
}
#login-screen .form-control {
  background: #f9fafb;
  border-color: #d1d5db;
  color: #111827;
}
#login-screen .form-control:focus {
  background: #fff;
  border-color: var(--accent);
  color: #111827;
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}
#login-screen .text-muted,
#login-screen h4 {
  color: #6b7280 !important;
}
#login-screen .card-body .form-label {
  color: #374151 !important;
}

/* Cards */
.stat-card {
  border: 1px solid var(--border-color) !important;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: transform 0.2s;
  background: var(--bg-card) !important;
  color: var(--text-primary);
}
.stat-card:hover {
  transform: translateY(-2px);
}
.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}
.stat-card .text-muted {
  color: var(--text-secondary) !important;
}
.stat-card h6 {
  color: var(--text-primary);
}

/* Override Bootstrap card */
.card {
  background: var(--bg-card) !important;
  border-color: var(--border-color) !important;
  color: var(--text-primary);
}
.card-body {
  color: var(--text-primary);
}

/* Forms */
.form-control, .form-select {
  background: var(--bg-medium);
  border-color: var(--border-color);
  color: var(--text-primary);
}
.form-control:focus, .form-select:focus {
  background: var(--bg-dark);
  border-color: var(--accent);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.25);
}
.form-control::placeholder {
  color: var(--text-muted);
}
.form-label {
  color: var(--text-secondary);
}

/* Text overrides */
.text-muted, .text-muted.small, .small.text-muted { color: #e0c8a0 !important; }
h4, h5, h6, .fw-bold, strong { color: #e8ecf1; }
.stat-card .text-muted, .card .text-muted { color: #e0c8a0 !important; }
.form-label { color: #e0c8a0 !important; }

/* Status badges */
.badge-open { background: #3b82f6; }
.badge-in_progress { background: #f59e0b; }
.badge-resolved { background: #10b981; }
.badge-closed { background: #6b7280; }

.badge-low { background: #6b7280; }
.badge-medium { background: #3b82f6; }
.badge-high { background: #f59e0b; }
.badge-critical { background: #ef4444; }

/* Tables */
.table {
  color: var(--text-primary);
  --bs-table-bg: transparent;
  --bs-table-hover-bg: rgba(59, 130, 246, 0.1);
}
.table th {
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  border-bottom-color: var(--border-color);
}
.table td {
  border-bottom-color: var(--border-color);
}

/* Ticket list */
.ticket-row {
  cursor: pointer;
  transition: background 0.15s;
}
.ticket-row:hover {
  background: rgba(59, 130, 246, 0.1) !important;
}

/* Messages */
.message-bubble {
  max-width: 85%;
  border-radius: 12px;
  padding: 12px 16px;
  margin-bottom: 12px;
}
.message-user {
  background: var(--accent);
  color: #fff;
  margin-left: auto;
}
.message-user .message-meta {
  color: rgba(255,255,255,0.7);
}
.message-admin {
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}
.message-internal {
  background: rgba(255, 193, 7, 0.1);
  border: 1px dashed rgba(255, 193, 7, 0.5);
  color: var(--text-primary);
}
.message-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.message-content {
  white-space: pre-wrap;
  word-break: break-word;
}

/* Attachments */
.attachment-preview {
  max-width: 200px;
  max-height: 150px;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid var(--border-color);
}
.attachment-preview:hover {
  opacity: 0.8;
  transform: scale(1.03);
  transition: all 0.2s;
}

/* Ticket detail */
.ticket-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 16px;
  margin-bottom: 16px;
}

/* Modal */
.modal-content {
  background: var(--bg-card) !important;
  border-color: var(--border-color);
  color: var(--text-primary);
}
.modal-header {
  border-bottom-color: var(--border-color);
}
.modal-header .btn-close {
  filter: invert(1);
}
.border-top {
  border-color: var(--border-color) !important;
}

/* Dropdown */
.dropdown-menu {
  background: var(--bg-medium);
  border-color: var(--border-color);
}
.dropdown-item {
  color: var(--text-primary);
}
.dropdown-item:hover {
  background: var(--bg-light);
  color: #fff;
}
.dropdown-divider {
  border-color: var(--border-color);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state i {
  font-size: 3rem;
  margin-bottom: 16px;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 60px;
  }
  .sidebar .nav-link span,
  .sidebar-link {
    font-size: 0;
  }
  .sidebar-link i {
    font-size: 1.2rem !important;
    margin: 0 !important;
  }
  .main-content {
    padding: 16px !important;
  }
}

/* Loading spinner */
.spinner-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10, 22, 40, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

/* File upload area */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s;
  color: var(--text-secondary);
}
.upload-area:hover,
.upload-area.dragover {
  border-color: var(--accent);
  background: rgba(59, 130, 246, 0.1);
}
.upload-preview {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}
.upload-preview img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

/* Toast */
.toast-container {
  position: fixed;
  top: 70px;
  right: 20px;
  z-index: 10000;
}

/* Stat icon backgrounds for dark theme */
.stat-icon.bg-primary.bg-opacity-10 { background: rgba(59, 130, 246, 0.2) !important; }
.stat-icon.bg-warning.bg-opacity-10 { background: rgba(245, 158, 11, 0.2) !important; }
.stat-icon.bg-danger.bg-opacity-10 { background: rgba(239, 68, 68, 0.2) !important; }
.stat-icon.bg-success.bg-opacity-10 { background: rgba(16, 185, 129, 0.2) !important; }
.stat-icon.bg-info.bg-opacity-10 { background: rgba(59, 130, 246, 0.2) !important; }

/* Admin controls in ticket detail */
.card.bg-light {
  background: var(--bg-medium) !important;
}

/* Alert overrides */
.alert-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
}
.alert-success {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}


/* ── Kanban board ── */
.kanban {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 8px;
}
.kanban-col {
  flex: 1;
  min-width: 230px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 10px;
}
.kanban-col.drop-target {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.08);
}
.kanban-col-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.85;
  padding: 2px 4px 10px;
}
.kanban-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 40px;
}
.kanban-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 10px 12px;
  cursor: pointer;
  transition: transform 0.08s ease, border-color 0.08s ease;
}
.kanban-card:hover {
  border-color: #3b82f6;
  transform: translateY(-1px);
}
.kanban-card[draggable="true"] { cursor: grab; }
.kanban-card[draggable="true"]:active { cursor: grabbing; }
.kanban-num {
  font-size: 0.72rem;
  opacity: 0.65;
  font-weight: 600;
}
.kanban-title {
  font-size: 0.88rem;
  font-weight: 500;
  margin: 4px 0 6px;
  line-height: 1.3;
}
.kanban-meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-size: 0.74rem;
  opacity: 0.6;
}