/* Marine Electronics Inventory System - Custom Styles */

:root {
  /* Marine Color Palette */
  --primary-blue: #006994;
  --aquamarine: #4DD0E1;
  --cyan-accent: #00ACC1;
  --alice-blue: #F0F8FF;
  --dark-blue-grey: #263238;
  --teal-success: #26A69A;
  --amber-warning: #FFA726;
  --red-danger: #EF5350;
  --light-grey: #ECEFF1;
  --medium-grey: #90A4AE;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #006994 0%, #00ACC1 100%);
  --gradient-header: linear-gradient(90deg, #006994 0%, #4DD0E1 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #F0F8FF 100%);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom, #F0F8FF 0%, #E1F5FE 100%);
  color: var(--dark-blue-grey);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

/* Header Styles */
.app-header {
  background: var(--gradient-header);
  color: white;
  padding: 1.5rem 0;
  box-shadow: 0 4px 12px rgba(0, 105, 148, 0.3);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.app-header .logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.app-header .logo {
  max-height: 60px;
  max-width: 200px;
  object-fit: contain;
}

.app-header h1 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.app-header .subtitle {
  font-size: 0.9rem;
  opacity: 0.95;
  margin-top: 0.25rem;
}

/* Navigation */
.nav-tabs {
  background: white;
  border-radius: 8px;
  padding: 0.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: none;
  margin-bottom: 2rem;
}

.nav-tabs .nav-link {
  color: var(--primary-blue);
  border: none;
  border-radius: 6px;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
  margin: 0 0.25rem;
}

.nav-tabs .nav-link:hover {
  background: var(--alice-blue);
  color: var(--cyan-accent);
  transform: translateY(-2px);
}

.nav-tabs .nav-link.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 8px rgba(0, 105, 148, 0.3);
}

/* Cards */
.card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  background: var(--gradient-card);
  transition: all 0.3s ease;
  overflow: hidden;
}

.card:hover {
  box-shadow: 0 8px 24px rgba(0, 105, 148, 0.15);
  transform: translateY(-4px);
}

.card-header {
  background: var(--gradient-primary);
  color: white;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 1rem 1.5rem;
  border: none;
}

.card-body {
  padding: 1.5rem;
}

/* Buttons */
.btn {
  border-radius: 8px;
  padding: 0.625rem 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  border: none;
}

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

.btn-primary:hover {
  background: linear-gradient(135deg, #005580 0%, #0099B8 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 105, 148, 0.4);
}

.btn-success {
  background-color: var(--teal-success);
  color: white;
}

.btn-success:hover {
  background-color: #229A8E;
  transform: translateY(-2px);
}

.btn-warning {
  background-color: var(--amber-warning);
  color: white;
}

.btn-warning:hover {
  background-color: #FB8C00;
  transform: translateY(-2px);
}

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

.btn-danger:hover {
  background-color: #E53935;
  transform: translateY(-2px);
}

.btn-outline-primary {
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-blue);
  color: white;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.375rem 1rem;
  font-size: 0.875rem;
}

/* Forms */
.form-label {
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.form-control, .form-select {
  border: 2px solid var(--light-grey);
  border-radius: 8px;
  padding: 0.625rem 1rem;
  transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--cyan-accent);
  box-shadow: 0 0 0 0.2rem rgba(77, 208, 225, 0.25);
  outline: none;
}

.input-group {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  border-radius: 8px;
  overflow: hidden;
}

.input-group-text {
  background: var(--gradient-primary);
  color: white;
  border: none;
  font-weight: 600;
}

/* Tables */
.table-container {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  overflow-x: auto;
}

.table {
  margin-bottom: 0;
}

.table thead {
  background: var(--gradient-primary);
  color: white;
}

.table thead th {
  border: none;
  padding: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.875rem;
  white-space: nowrap;
}

.table tbody tr {
  transition: all 0.2s ease;
  border-bottom: 1px solid var(--light-grey);
}

.table tbody tr:hover {
  background: var(--alice-blue);
  transform: scale(1.01);
  box-shadow: 0 2px 8px rgba(0, 105, 148, 0.1);
}

.table tbody td {
  padding: 1rem;
  vertical-align: middle;
}

/* Badges */
.badge {
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.75rem;
}

.badge-low-stock {
  background-color: var(--red-danger);
  color: white;
  animation: pulse 2s infinite;
}

.badge-in-stock {
  background-color: var(--teal-success);
  color: white;
}

.badge-category {
  background-color: var(--cyan-accent);
  color: white;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

/* Dashboard Stats */
.stat-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  border-left: 4px solid var(--primary-blue);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 105, 148, 0.15);
}

.stat-card.warning {
  border-left-color: var(--amber-warning);
}

.stat-card.success {
  border-left-color: var(--teal-success);
}

.stat-card.danger {
  border-left-color: var(--red-danger);
}

.stat-card .stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-card .stat-label {
  font-size: 0.875rem;
  color: var(--medium-grey);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

/* Search Bar */
.search-container {
  position: relative;
  margin-bottom: 1.5rem;
}

.search-container input {
  padding-left: 3rem;
  font-size: 1.1rem;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--cyan-accent);
  font-size: 1.25rem;
  pointer-events: none;
}

/* Alerts */
.alert {
  border-radius: 8px;
  border: none;
  padding: 1rem 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.alert-info {
  background: linear-gradient(135deg, #4DD0E1 0%, #80DEEA 100%);
  color: white;
}

.alert-warning {
  background: linear-gradient(135deg, #FFA726 0%, #FFB74D 100%);
  color: white;
}

.alert-danger {
  background: linear-gradient(135deg, #EF5350 0%, #E57373 100%);
  color: white;
}

.alert-success {
  background: linear-gradient(135deg, #26A69A 0%, #4DB6AC 100%);
  color: white;
}

/* Modal */
.modal-content {
  border-radius: 12px;
  border: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.modal-header {
  background: var(--gradient-primary);
  color: white;
  border-radius: 12px 12px 0 0;
  border: none;
  padding: 1.5rem;
}

.modal-header .btn-close {
  filter: brightness(0) invert(1);
}

.modal-body {
  padding: 2rem;
}

.modal-footer {
  border-top: 2px solid var(--light-grey);
  padding: 1.5rem;
}

/* Loading Spinner */
.spinner-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem;
}

.spinner-border {
  width: 3rem;
  height: 3rem;
  border-width: 0.3rem;
  color: var(--cyan-accent);
}

/* Pagination */
.pagination {
  margin-top: 1.5rem;
  justify-content: center;
}

.page-link {
  color: var(--primary-blue);
  border: 2px solid var(--light-grey);
  border-radius: 8px;
  margin: 0 0.25rem;
  padding: 0.5rem 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.page-link:hover {
  background: var(--alice-blue);
  border-color: var(--cyan-accent);
  color: var(--cyan-accent);
}

.page-item.active .page-link {
  background: var(--gradient-primary);
  border-color: var(--primary-blue);
}

/* Print Styles */
@media print {
  body {
    background: white;
  }
  
  .no-print {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    page-break-inside: avoid;
  }
  
  .table {
    font-size: 0.875rem;
  }
  
  .app-header {
    position: static;
    box-shadow: none;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header h1 {
    font-size: 1.3rem;
  }
  
  .app-header .logo {
    max-height: 40px;
  }
  
  .nav-tabs .nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
  
  .stat-card .stat-value {
    font-size: 2rem;
  }
  
  .table-container {
    padding: 0.75rem;
  }
  
  .table thead th,
  .table tbody td {
    padding: 0.5rem;
    font-size: 0.875rem;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
}

@media (max-width: 576px) {
  .app-header h1 {
    font-size: 1.1rem;
  }
  
  .nav-tabs {
    flex-direction: column;
  }
  
  .nav-tabs .nav-link {
    margin: 0.25rem 0;
  }
  
  .stat-card {
    margin-bottom: 1rem;
  }
}

/* Utility Classes */
.text-marine {
  color: var(--primary-blue);
}

.text-aqua {
  color: var(--aquamarine);
}

.bg-marine {
  background: var(--gradient-primary);
}

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

.shadow-marine {
  box-shadow: 0 4px 12px rgba(0, 105, 148, 0.3);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light-grey);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #005580 0%, #0099B8 100%);
}

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

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

/* Icon Styles */
.icon {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.5rem;
  vertical-align: middle;
}

/* Vendor Badge Colors */
.vendor-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  margin: 0.125rem;
}

/* SKU Display */
.sku-code {
  font-family: 'Courier New', monospace;
  background: var(--light-grey);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
  color: var(--dark-blue-grey);
}

/* Action Buttons Group */
.action-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.action-buttons .btn {
  flex: 1;
  min-width: 100px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--medium-grey);
}

.empty-state-icon {
  font-size: 4rem;
  color: var(--aquamarine);
  margin-bottom: 1rem;
}

.empty-state h3 {
  color: var(--primary-blue);
  margin-bottom: 1rem;
}