/* CSS Reset and Custom Properties */
:root {
  /* Color Palette */
  --primary-blue: #1e3a8a;
  --primary-blue-light: #2563eb;
  --primary-orange: #f97316;
  --primary-orange-light: #fb923c;
  --accent-green: #10b981;
  --accent-green-light: #34d399;
  
  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* Typography */
  --font-heading: 'Inter', 'Montserrat', sans-serif;
  --font-body: 'Open Sans', 'Roboto', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Reset */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--gray-800);
  line-height: 1.6;
  background-color: var(--gray-50);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-blue-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Utility Classes */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Navigation */
.navbar {
  background: white;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-logo img {
  height: 40px;
  width: auto;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
}

.navbar-menu a {
  color: var(--gray-700);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--primary-blue);
  border-bottom-color: var(--primary-orange);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.navbar-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--gray-700);
  margin: 5px 0;
  transition: 0.3s;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  color: white;
  padding: var(--spacing-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -50%;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="white" stroke-width="0.5" opacity="0.1"/></svg>');
  background-size: 300px 300px;
  animation: float 20s infinite linear;
}

@keyframes float {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(100px) translateY(-100px); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
  font-family: var(--font-body);
}

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

.btn-primary:hover {
  background: var(--primary-orange-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

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

.btn-success:hover {
  background: var(--accent-green-light);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.card-header {
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}

/* Course Cards */
.course-card {
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.course-category {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--primary-blue);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.course-pdh {
  display: inline-block;
  background: var(--accent-green);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.course-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-orange);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--gray-700);
}

.form-control {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: all 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

select.form-control {
  cursor: pointer;
}

/* State Checker Widget */
.state-checker {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin: var(--spacing-xl) 0;
}

.state-checker h3 {
  color: var(--primary-blue);
  margin-bottom: var(--spacing-lg);
}

.state-result {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-green);
}

/* Features Grid */
.features {
  padding: var(--spacing-3xl) 0;
  background: white;
}

.feature-item {
  text-align: center;
  padding: var(--spacing-lg);
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: var(--primary-orange);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
}

/* Footer */
.footer {
  background: var(--gray-800);
  color: white;
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: var(--gray-300);
  padding: var(--spacing-xs) 0;
  display: block;
}

.footer-section a:hover {
  color: var(--primary-orange);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--gray-700);
  color: var(--gray-400);
}

/* Testimonials */
.testimonial {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary-orange);
  opacity: 0.3;
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
}

.testimonial-author {
  font-weight: 600;
  color: var(--primary-blue);
}

.testimonial-role {
  color: var(--gray-500);
  font-size: 0.9rem;
}

/* Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
}

.badge-primary {
  background: var(--primary-blue);
  color: white;
}

.badge-success {
  background: var(--accent-green);
  color: white;
}

.badge-warning {
  background: var(--primary-orange);
  color: white;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table th {
  background: var(--primary-blue);
  color: white;
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--gray-200);
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover {
  background: var(--gray-50);
}

/* Accordion (FAQ) */
.accordion {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.accordion-item {
  border-bottom: 1px solid var(--gray-200);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  padding: var(--spacing-lg);
  background: white;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
}

.accordion-header:hover {
  background: var(--gray-50);
}

.accordion-header.active {
  background: var(--gray-50);
}

.accordion-icon {
  transition: transform 0.3s ease;
}

.accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  padding: 0 var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion-content.active {
  padding: var(--spacing-lg);
  max-height: 500px;
}

/* Loading Spinner */
.spinner {
  border: 3px solid var(--gray-200);
  border-top: 3px solid var(--primary-blue);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: var(--spacing-xl) auto;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .navbar-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
  }
  
  .navbar-menu.active {
    display: flex;
  }
  
  .navbar-toggle {
    display: block;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .card {
    border-radius: var(--radius-md);
  }
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  .btn,
  .navbar-toggle {
    display: none;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
  
  .card {
    page-break-inside: avoid;
  }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus Styles */
*:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Skip to Content Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-blue);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 100;
}

.skip-link:focus {
  top: 0;
}