/* Core Theme CSS - Modern Navy Blue with Thai Language Support */

/* Import Modern Thai Fonts */
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&family=Prompt:wght@300;400;500;600;700&display=swap');

/* CSS Variables for Theme Colors */
:root {
  /* Navy Blue Color Palette */
  --primary-navy: #1e3a5f;
  --primary-navy-light: #2c5282;
  --primary-navy-dark: #1a2332;
  --secondary-navy: #3182ce;
  --accent-blue: #4299e1;
  
  /* Neutral Colors */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Font Variables */
  --font-thai: 'Kanit', 'Prompt', sans-serif;
  --font-heading: 'Kanit', sans-serif;
  --font-body: 'Prompt', sans-serif;
  
  /* Spacing & Sizing */
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Base HTML & Body Styles */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-700);
  background-color: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Overrides */
h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--primary-navy);
  margin-bottom: 1rem;
}

h1, .h1 { font-size: 2.5rem; font-weight: 700; }
h2, .h2 { font-size: 2rem; font-weight: 600; }
h3, .h3 { font-size: 1.75rem; font-weight: 600; }
h4, .h4 { font-size: 1.5rem; font-weight: 500; }
h5, .h5 { font-size: 1.25rem; font-weight: 500; }
h6, .h6 { font-size: 1.125rem; font-weight: 500; }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

/* Bootstrap Component Overrides */

/* Primary Button Styles */
.btn-primary {
  background-color: var(--primary-navy);
  border-color: var(--primary-navy);
  color: white;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  transition: all 0.2s ease;
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--primary-navy-light);
  border-color: var(--primary-navy-light);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  background-color: var(--primary-navy-dark);
  border-color: var(--primary-navy-dark);
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--secondary-navy);
  border-color: var(--secondary-navy);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--accent-blue);
  border-color: var(--accent-blue);
  color: white;
}

/* Outline Buttons */
.btn-outline-primary {
  color: var(--primary-navy);
  border-color: var(--primary-navy);
  background-color: transparent;
}

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

.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

/* Card Styles */
.card {
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.card.shadow-custom:hover {
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.card-header {
  background-color: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding: 1.25rem;
  font-weight: 500;
  color: var(--primary-navy);
}

.card-body {
  padding: 1.5rem;
}

/* Navigation Styles */
.navbar {
  background-color: var(--primary-navy) !important;
  box-shadow: var(--shadow-md);
  padding: 1rem 0;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: white !important;
}

.navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.9) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: all 0.2s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  color: white !important;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius);
}

.navbar-nav .nav-link.active {
  color: white !important;
  background-color: var(--secondary-navy);
  border-radius: var(--border-radius);
}

/* Form Controls */
.form-control {
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: all 0.2s ease;
}

.form-control:focus {
  border-color: var(--secondary-navy);
  box-shadow: 0 0 0 0.2rem rgba(49, 130, 206, 0.25);
  outline: none;
}

.form-label {
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

/* Alert Styles */
.alert {
  border-radius: var(--border-radius-lg);
  border: none;
  padding: 1rem 1.25rem;
  font-weight: 500;
}

.alert-primary {
  background-color: rgba(30, 58, 95, 0.1);
  color: var(--primary-navy);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* Table Styles */
.table {
  color: var(--gray-700);
}

.table th {
  background-color: var(--gray-100);
  color: var(--primary-navy);
  font-weight: 600;
  border-bottom: 2px solid var(--gray-200);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: rgba(248, 250, 252, 0.5);
}

/* Modal Styles */
.modal-header {
  background-color: var(--primary-navy);
  color: white;
  border-bottom: none;
}

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

.modal-content {
  border-radius: var(--border-radius-lg);
  border: none;
  box-shadow: var(--shadow-lg);
}

/* Badge Styles */
.badge {
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius);
}

.badge.bg-primary {
  background-color: var(--primary-navy) !important;
}

/* Badge enhancements */
.badge.bg-success {
  background-color: var(--success) !important;
}

.badge.bg-secondary {
  background-color: var(--secondary-navy) !important;
}

/* Pagination */
.pagination .page-link {
  color: var(--primary-navy);
  border-color: var(--gray-200);
  font-weight: 500;
}

.pagination .page-link:hover {
  background-color: var(--gray-100);
  border-color: var(--gray-300);
  color: var(--primary-navy-dark);
}

.pagination .page-item.active .page-link {
  background-color: var(--primary-navy);
  border-color: var(--primary-navy);
  color: white;
}

/* Custom Utility Classes */
.text-navy {
  color: var(--primary-navy) !important;
}

.bg-navy {
  background-color: var(--primary-navy) !important;
}

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

.shadow-custom {
  box-shadow: var(--shadow-md);
}

.rounded-custom {
  border-radius: var(--border-radius-lg) !important;
}

/* Thai Text Specific Styles */
.thai-text {
  font-family: var(--font-thai);
  line-height: 1.8;
}

.thai-heading {
  font-family: var(--font-heading);
  font-weight: 600;
}

/* Responsive Font Sizes */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  h1, .h1 { font-size: 2rem; }
  h2, .h2 { font-size: 1.75rem; }
  h3, .h3 { font-size: 1.5rem; }
  
  .navbar-nav .nav-link {
    padding: 0.75rem 1rem !important;
  }
}

/* Smooth Animations */
* {
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-control:focus,
.nav-link:focus {
  box-shadow: 0 0 0 0.2rem rgba(49, 130, 206, 0.25);
  outline: none;
}

/* Loading Spinner */
.spinner-navy {
  color: var(--primary-navy);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-500);
}

/* Additional Styles for Main Page */
.main-content-area {
  animation: fadeInUp 0.6s ease-out;
}

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

/* Page header small text */
.page-header small {
  font-weight: 400;
  color: var(--gray-500);
}