html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--dcte-primary-green);
}

html {
  position: relative;
  min-height: 100%;
}

/* DCTE Color Scheme - Based on Official Logo Colors */
/* Colors extracted from the official DCTE logo:
   - Green: Wreath, crescent moon, banner (dominant color)
   - Gold/Yellow: Book's glowing radiance
   - Brown: Fort structure
   - Black: Text and calligraphy
   - White: Background
*/
:root {
  /* Primary Green - Dominant color from logo (wreath, crescent moon, banner) */
  --dcte-primary-green: #0d5d2e;       /* Rich vibrant green from logo wreath and banner */
  --dcte-secondary-green: #15803d;     /* Medium green - vibrant accent */
  --dcte-light-green: #22c55e;         /* Light green - hover states and highlights */
  --dcte-dark-green: #0a4a1f;          /* Darker green - shadows, borders, deep accents */
  --dcte-deep-green: #064e20;          /* Deepest green - text on light backgrounds */
  
  /* Gold/Yellow - From book's glowing radiance in logo */
  --dcte-gold: #fbbf24;                /* Bright golden yellow from logo (book glow) */
  --dcte-gold-dark: #f59e0b;           /* Darker gold - hover states, shadows */
  --dcte-gold-light: #fcd34d;           /* Light gold - highlights, accents */
  --dcte-gold-bright: #fde047;          /* Brightest gold - emphasis */
  
  /* Brown - From fort structure in logo */
  --dcte-brown: #92400e;               /* Warm brown from logo (fort structure) */
  --dcte-brown-light: #a16207;          /* Lighter brown - accents, highlights */
  --dcte-brown-dark: #78350f;           /* Darker brown - shadows */
  
  /* Semantic Colors */
  --dcte-success-green: #15803d;       /* Success - matches secondary green */
  --dcte-danger-red: #DC2626;          /* Danger red */
  --dcte-warning-gold: #f59e0b;        /* Warning - uses gold from logo */
  --dcte-info-blue: #3b82f6;           /* Info blue - complementary color */
  
  /* Neutral Colors - From logo */
  --dcte-dark: #000000;                /* Pure black from logo (text, calligraphy) */
  --dcte-gray-dark: #1f2937;           /* Dark gray for secondary text */
  --dcte-gray: #4b5563;                /* Medium gray */
  --dcte-gray-light: #9ca3af;          /* Light gray */
  --dcte-light-bg: #FFFFFF;            /* Pure white from logo background */
  --dcte-lighter-bg: #F8FAFC;          /* Off-white for subtle backgrounds */
  --dcte-border: #E5E7EB;              /* Light border color */
  --dcte-border-dark: #d1d5db;         /* Darker border for contrast */
  
  /* Legacy aliases for backward compatibility */
  --primary-green: var(--dcte-primary-green);
  --secondary-green: var(--dcte-secondary-green);
  --light-green: var(--dcte-light-green);
  --dark-green: var(--dcte-dark-green);
  --gold: var(--dcte-gold);
  --gold-dark: var(--dcte-gold-dark);
  --gold-light: var(--dcte-gold-light);
  --brown: var(--dcte-brown);
  --success-green: var(--dcte-success-green);
  --danger-red: var(--dcte-danger-red);
  --warning-gold: var(--dcte-warning-gold);
  --text-primary: var(--dcte-dark);
  --text-secondary: var(--dcte-gray-dark);
  --background-light: var(--dcte-light-bg);
  --border-color: var(--dcte-border);
}

body {
  margin-bottom: 60px;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--dcte-light-bg) 0%, var(--dcte-lighter-bg) 100%);
  min-height: 100vh;
}

.dataTables_filter{
    margin-bottom:20px;
}

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

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--dcte-primary-green) 0%, var(--dcte-secondary-green) 50%, var(--dcte-light-green) 100%);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--dcte-gold) 0%, var(--dcte-gold-dark) 100%);
}

/* Smooth Transitions */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Sidebar Navigation Styles */
.sidebar .nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin: 0.25rem 0.5rem;
  transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white !important;
  transform: translateX(5px);
  box-shadow: 0 2px 8px rgba(251, 191, 36, 0.3);
}

.sidebar .nav-link.active {
  background: linear-gradient(135deg, var(--dcte-gold) 0%, var(--dcte-gold-dark) 100%);
  color: white !important;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

.sidebar form button.nav-link:hover {
  background: rgba(220, 38, 38, 0.2) !important;
  color: #ff6b6b !important;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

/* Card Enhancements */
.card {
  border: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.12);
}

/* Button Enhancements */
.btn {
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Form Enhancements */
.form-control, .form-select {
  border-radius: 8px;
  border: 1px solid #dee2e6;
  transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--dcte-primary-green);
  box-shadow: 0 0 0 0.2rem rgba(13, 93, 46, 0.25);
}

/* Loading Spinner Enhancement */
.spinner {
  border: 4px solid #f3f3f3;
  border-top: 4px solid var(--dcte-gold);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
  margin: 20px auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Toastr Customization */
.toast {
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Footer Enhancement */
footer {
  background: linear-gradient(135deg, var(--dcte-primary-green) 0%, var(--dcte-dark-green) 50%, var(--dcte-deep-green) 100%);
  color: white;
  padding: 1.5rem 0;
  margin-top: 3rem;
}

footer .container {
  text-align: center;
}

/* Responsive Improvements */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  .card-body {
    padding: 1rem;
  }
}

/* Accessibility Improvements */
:focus-visible {
  outline: 2px solid var(--dcte-primary-green);
  outline-offset: 2px;
}

/* Print Styles */
@media print {
  body {
    background: white;
  }
  
  .btn, .card-header {
    background: white !important;
    color: black !important;
  }
}