/* HEATING - Main CSS */
:root {
  --brand-orange: #D37428;
  --brand-blue: #004B87;
  --brand-gray: #BBBBBC;
  --text-dark: #333333;
  --bg-light: #f8f9fa;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --info: #17a2b8;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Global Styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--brand-blue);
  font-weight: 600;
}

.text-brand-orange { color: var(--brand-orange) !important; }
.text-brand-blue { color: var(--brand-blue) !important; }
.text-brand-gray { color: var(--brand-gray) !important; }

.bg-brand-orange { background-color: var(--brand-orange) !important; }
.bg-brand-blue { background-color: var(--brand-blue) !important; }
.bg-brand-gray { background-color: var(--brand-gray) !important; }

/* Navbar Enhancements */
.navbar {
  border-bottom: 2px solid var(--brand-orange);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  transition: var(--transition-fast);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.navbar-nav .nav-link {
  font-weight: 500;
  position: relative;
  transition: var(--transition-fast);
  border-radius: 8px;
  padding: 8px 16px !important;
  margin: 0 4px;
}

.navbar-nav .nav-link:hover {
  background-color: rgba(211, 116, 40, 0.1);
  color: var(--brand-orange) !important;
}

.navbar-nav .nav-link.active {
  background-color: rgba(211, 116, 40, 0.15);
  color: var(--brand-orange) !important;
  font-weight: 600;
}

/* Dropdown Menu */
.dropdown-menu {
  border: none;
  box-shadow: var(--shadow-lg);
  border-radius: 12px;
  padding: 8px 0;
  margin-top: 8px;
}

.dropdown-item {
  padding: 6px 12px;
  transition: var(--transition-fast);
  border-radius: 4px;
  margin: 0px 2px;
  display: flex;
  align-items: center;
}

.dropdown-item i {
  width: 20px;
  margin-right: 8px;
  text-align: center;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: rgba(211, 116, 40, 0.1) !important;
  color: var(--brand-orange) !important;
}

.dropdown-item.active,
.dropdown-item:active {
  background-color: rgba(211, 116, 40, 0.15) !important;
  color: var(--brand-orange) !important;
}

/* Cards & Panels */
.card {
  border: none;
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  overflow: hidden;
}

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

.card-header {
  background: linear-gradient(135deg, var(--brand-blue), #0056a3);
  color: white;
  border: none;
  padding: 20px;
  font-weight: 600;
}

.card-header h5, .card-header h4 {
  color: white;
  margin-bottom: 0;
}

.card-body {
  padding: 24px;
}

/* Buttons */
.btn {
  border-radius: 10px;
  font-weight: 500;
  padding: 10px 20px;
  transition: var(--transition-fast);
  border: 2px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--brand-orange), #e6802f);
  border-color: var(--brand-orange);
  box-shadow: 0 4px 8px rgba(211, 116, 40, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #b8631f, var(--brand-orange));
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(211, 116, 40, 0.4);
}

.btn-outline-primary {
  color: var(--brand-orange);
  border-color: var(--brand-orange);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
  color: white;
}

.btn-secondary {
  background: var(--brand-gray);
  border-color: var(--brand-gray);
  color: white;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.1rem;
  border-radius: 12px;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.9rem;
  border-radius: 8px;
}

/* Forms */
.form-control, .form-select {
  border-radius: 10px;
  border: 2px solid #e0e0e0;
  padding: 12px 16px;
  transition: var(--transition-fast);
  font-size: 0.95rem;
}

.form-control:focus, .form-select:focus {
  border-color: var(--brand-orange);
  box-shadow: 0 0 0 0.2rem rgba(211, 116, 40, 0.25);
}

.form-label {
  font-weight: 600;
  color: var(--brand-blue);
  margin-bottom: 8px;
}

.input-group-text {
  background-color: var(--bg-light);
  border: 2px solid #e0e0e0;
  border-radius: 10px 0 0 10px;
  color: var(--brand-blue);
}

/* Alerts */
.alert {
  border: none;
  border-radius: 12px;
  padding: 16px 20px;
  font-weight: 500;
  border-left: 4px solid;
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  color: #155724;
  border-left-color: var(--success);
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  color: #721c24;
  border-left-color: var(--danger);
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.1);
  color: #856404;
  border-left-color: var(--warning);
}

.alert-info {
  background-color: rgba(23, 162, 184, 0.1);
  color: #0c5460;
  border-left-color: var(--info);
}

/* Badges */
.badge {
  border-radius: 8px;
  font-weight: 500;
  padding: 6px 10px;
  font-size: 0.8rem;
}

.badge.bg-danger {
  background: linear-gradient(135deg, var(--danger), #e74c3c) !important;
}

.badge.bg-success {
  background: linear-gradient(135deg, var(--success), #2ecc71) !important;
}

/* Notification Badge for Navbar Messages */
.navbar .nav-link .notification-badge {
  position: relative;
  top: -2px;
  margin-left: 4px;
  min-width: 18px;
  height: 18px;
  padding: 0;
  font-size: 0.7rem;
  line-height: 18px;
  text-align: center;
  border-radius: 50%;
  background: linear-gradient(135deg, #dc3545, #c82333) !important;
  color: white;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(220, 53, 69, 0.4);
  animation: notification-pulse 2s ease-in-out infinite;
}

@keyframes notification-pulse {
  0%, 100% { 
    box-shadow: 0 2px 6px rgba(220, 53, 69, 0.4);
  }
  50% { 
    box-shadow: 0 2px 12px rgba(220, 53, 69, 0.6), 0 0 0 3px rgba(220, 53, 69, 0.1);
  }
}

/* Tables */
.table {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.table thead th {
  background: linear-gradient(135deg, var(--brand-blue), #0056a3);
  color: white;
  border: none;
  font-weight: 600;
  padding: 16px;
}

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

.table tbody tr:hover {
  background-color: rgba(211, 116, 40, 0.05);
}

.table td {
  padding: 14px 16px;
  vertical-align: middle;
}

/* Breadcrumbs */
.breadcrumb {
  background: transparent;
  padding: 12px 0;
  margin: 0 0 24px 0;
}

.breadcrumb-item {
  font-weight: 500;
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '>';
  color: var(--brand-gray);
  font-weight: bold;
}

.breadcrumb-item.active {
  color: var(--brand-orange);
  font-weight: 600;
}

.breadcrumb-item a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--brand-orange);
}

/* Loading Spinner */
.loading-spinner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 9999;
  display: none;
}

.spinner-border-lg {
  width: 3rem;
  height: 3rem;
}

/* Floating Action Button */
.fab-home {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--brand-orange), #e6802f);
  border-radius: 50%;
  box-shadow: 0 6px 16px rgba(211, 116, 40, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  z-index: 1000;
  transition: var(--transition-normal);
  border: none;
}

.fab-home:hover {
  background: linear-gradient(135deg, #b8631f, var(--brand-orange));
  color: white;
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 8px 20px rgba(211, 116, 40, 0.5);
}

.fab-home:active {
  transform: scale(0.95);
}

/* Offline Indicator */
.offline-indicator {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, var(--danger), #e74c3c);
  color: white;
  text-align: center;
  padding: 8px;
  z-index: 1060;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  display: none;
}

/* PWA Install Prompt */
.pwa-install-prompt {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: linear-gradient(135deg, var(--brand-blue), #0056a3);
  color: white;
  padding: 20px;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  z-index: 1050;
  display: none;
  max-width: 400px;
  margin: 0 auto;
}

.pwa-install-prompt .btn-light {
  background: white;
  color: var(--brand-blue);
  border: none;
  font-weight: 600;
}

.pwa-install-prompt .btn-outline-light {
  color: white;
  border-color: white;
}

.pwa-install-prompt .btn-outline-light:hover {
  background: white;
  color: var(--brand-blue);
}

/* Footer */
.footer {
  background: linear-gradient(135deg, var(--brand-blue), #003366);
  color: white;
  margin-top: 60px;
}

.footer a {
  transition: var(--transition-fast);
}

.footer a:hover {
  color: var(--brand-orange) !important;
}

/* Dashboard Cards */
.dashboard-card {
  background: white;
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.dashboard-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.dashboard-card .card-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  margin-bottom: 16px;
}

.dashboard-card .card-icon.bg-orange {
  background: linear-gradient(135deg, var(--brand-orange), #e6802f);
}

.dashboard-card .card-icon.bg-blue {
  background: linear-gradient(135deg, var(--brand-blue), #0056a3);
}

.dashboard-card .card-icon.bg-success {
  background: linear-gradient(135deg, var(--success), #2ecc71);
}

.dashboard-card .card-icon.bg-info {
  background: linear-gradient(135deg, var(--info), #3498db);
}

.dashboard-card h5 {
  color: var(--brand-blue);
  font-weight: 600;
  margin-bottom: 8px;
}

.dashboard-card p {
  color: #666;
  margin-bottom: 16px;
  flex-grow: 1;
}

/* Stats Cards */
.stats-card {
  text-align: center;
  padding: 20px;
  border-radius: 16px;
  background: white;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

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

.stats-card .stats-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--brand-orange);
  line-height: 1;
  margin-bottom: 8px;
}

.stats-card .stats-label {
  color: var(--brand-blue);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .navbar-brand {
    font-size: 1.3rem;
  }

  .fab-home {
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
  }

  .pwa-install-prompt {
    left: 16px;
    right: 16px;
    bottom: 20px;
    padding: 16px;
  }

  .dashboard-card {
    margin-bottom: 20px;
  }

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

@media (max-width: 576px) {
  .btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
  }

  .stats-card .stats-number {
    font-size: 2rem;
  }

  .card-header {
    padding: 16px;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.slide-in-right {
  animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
  from { transform: translateX(100%); }
  to { transform: translateX(0); }
}

/* Utility Classes */
.text-shadow {
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.border-brand-orange {
  border-color: var(--brand-orange) !important;
}

.border-brand-blue {
  border-color: var(--brand-blue) !important;
}

.cursor-pointer {
  cursor: pointer;
}

.transition-fast {
  transition: var(--transition-fast);
}

.transition-normal {
  transition: var(--transition-normal);
}

/* Print Styles */
@media print {
  .navbar, .fab-home, .pwa-install-prompt, .offline-indicator {
    display: none !important;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}