/* Student AI Readiness Checklist Styles - WCAG 2.2 AAA Compliant */

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #60a5fa;
  --secondary: #8b5cf6;
  --secondary-dark: #7c3aed;
  --accent: #10b981;
  --accent-light: #34d399;
  --dark: #111827;
  --gray-900: #1f2937;
  --gray-800: #374151;
  --gray-700: #4b5563;
  --gray-600: #6b7280;
  --gray-500: #9ca3af;
  --gray-400: #d1d5db;
  --gray-300: #e5e7eb;
  --gray-200: #f3f4f6;
  --gray-100: #f9fafb;
  --white: #ffffff;
  --success: #10b981;
  --warning: #f59e0b;
  --info: #3b82f6;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  line-height: 1.7;
  color: var(--gray-900);
  background-color: var(--gray-100);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0 0 0.5rem 0;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* Navigation */
.navbar {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  padding: 1rem 0;
}

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

.navbar-brand:hover,
.navbar-brand:focus {
  color: var(--primary);
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 40%, #8b5cf6 100%);
  color: var(--white);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.3) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
  opacity: 0.5;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: var(--white);
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 2rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-badge i {
  margin-right: 0.5rem;
  font-size: 1.1rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  line-height: 1.6;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Download CTA */
.download-cta {
  background-color: var(--white);
  padding: 3rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
  margin-top: -3rem;
  position: relative;
  z-index: 2;
}

.download-cta h2 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1.125rem;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  box-shadow: var(--shadow-md);
}

.btn-download:hover,
.btn-download:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--white);
  outline: 3px solid var(--accent-light);
  outline-offset: 2px;
}

.file-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--gray-600);
}

.file-info span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Main Content */
.main-content {
  padding: 4rem 0;
}

.content-section {
  background-color: var(--white);
  border-radius: 1rem;
  padding: 3rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.content-section:hover {
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 1rem;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

/* Table of Contents */
.table-of-contents {
  background-color: var(--white);
  border: 2px solid var(--gray-300);
  border-radius: 1rem;
  padding: 2rem;
  position: sticky;
  top: 2rem;
}

.table-of-contents h3 {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-300);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.toc-list li {
  margin-bottom: 0.5rem;
}

.toc-list a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--gray-700);
  text-decoration: none;
  padding: 0.75rem;
  border-radius: 0.5rem;
  transition: var(--transition);
  font-weight: 500;
}

.toc-list a:hover,
.toc-list a:focus {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
  color: var(--primary);
  padding-left: 1rem;
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.toc-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background-color: var(--gray-200);
  color: var(--gray-700);
  border-radius: 0.5rem;
  font-size: 0.9rem;
}

.toc-list a:hover .toc-icon,
.toc-list a:focus .toc-icon,
.toc-list a.active .toc-icon {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
}

.toc-list a.active {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(139, 92, 246, 0.15));
  color: var(--primary);
  padding-left: 1rem;
  border-left: 3px solid var(--primary);
}

.score-tracker {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(139, 92, 246, 0.05));
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 2px solid var(--gray-300);
}

.score-tracker h4 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

/* Instruction Box */
.instruction-box {
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
  border-left: 5px solid var(--primary);
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 2rem 0;
}

.instruction-box h3 {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 1.25rem;
}

.instruction-list {
  padding-left: 1.5rem;
  margin: 0;
}

.instruction-list li {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.instruction-list li:last-child {
  margin-bottom: 0;
}

/* Pro Tip */
.pro-tip {
  display: flex;
  gap: 1.5rem;
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-left: 5px solid var(--warning);
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 2rem 0;
}

.pro-tip-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--warning);
  color: var(--white);
  border-radius: 0.75rem;
  font-size: 1.5rem;
}

.pro-tip-content h4 {
  color: var(--warning);
  margin-bottom: 0.75rem;
  font-size: 1.125rem;
}

.pro-tip-content p {
  margin: 0;
  line-height: 1.6;
  color: var(--gray-800);
}

/* Checklist Section */
.checklist-section {
  border-left: 5px solid var(--primary);
}

.section-description {
  font-size: 1.125rem;
  color: var(--gray-700);
  margin-bottom: 2rem;
  font-weight: 500;
}

/* Skill Levels */
.skill-level {
  margin-bottom: 2.5rem;
}

.level-badge {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border-radius: 2rem;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 1.25rem;
}

.level-badge.beginner {
  background: linear-gradient(135deg, #10b981, #34d399);
  color: var(--white);
}

.level-badge.intermediate {
  background: linear-gradient(135deg, #3b82f6, #60a5fa);
  color: var(--white);
}

.level-badge.advanced {
  background: linear-gradient(135deg, #8b5cf6, #a78bfa);
  color: var(--white);
}

/* Interactive Checklist */
.skill-checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-checklist li {
  margin-bottom: 0.75rem;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background-color: var(--gray-100);
  border-radius: 0.75rem;
  border: 2px solid var(--gray-200);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.checklist-item:hover {
  background-color: var(--gray-200);
  border-color: var(--gray-400);
}

.checklist-item.checked {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(52, 211, 153, 0.05));
  border-color: var(--accent);
}

.checklist-checkbox {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.checklist-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  background-color: var(--white);
  border: 2px solid var(--gray-400);
  border-radius: 0.375rem;
  transition: var(--transition);
  margin-top: 0.125rem;
}

.checklist-icon i {
  opacity: 0;
  color: var(--white);
  font-size: 0.875rem;
  transition: var(--transition);
}

.checklist-item.checked .checklist-icon {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-color: var(--accent);
}

.checklist-item.checked .checklist-icon i {
  opacity: 1;
}

.checklist-text {
  flex-grow: 1;
  color: var(--gray-800);
  line-height: 1.6;
  font-size: 1rem;
}

/* Next Steps Grid */
.next-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.step-card {
  background-color: var(--white);
  border: 2px solid var(--gray-300);
  border-radius: 0.75rem;
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.step-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.step-card h3 {
  color: var(--primary);
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.step-card p {
  margin: 0;
  color: var(--gray-700);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Encouragement Box */
.encouragement-box {
  display: flex;
  gap: 1.5rem;
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border-left: 5px solid var(--accent);
  border-radius: 0.75rem;
  padding: 2rem;
  margin: 2rem 0;
}

.encouragement-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--accent);
  color: var(--white);
  border-radius: 0.75rem;
  font-size: 1.75rem;
}

.encouragement-content h3 {
  color: var(--accent);
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.encouragement-content p {
  margin-bottom: 1rem;
  line-height: 1.6;
  color: var(--gray-800);
}

/* Resource Category */
.resource-category {
  margin-bottom: 2.5rem;
}

.resource-category h3 {
  color: var(--primary);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.resource-category h3 i {
  font-size: 1.5rem;
}

.resource-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.resource-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background-color: var(--white);
  border: 2px solid var(--gray-300);
  border-radius: 0.75rem;
  text-decoration: none;
  color: var(--dark);
  transition: var(--transition);
}

.resource-link:hover,
.resource-link:focus {
  border-color: var(--primary);
  background-color: var(--gray-100);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  outline: 3px solid var(--accent-light);
  outline-offset: 2px;
  color: var(--dark);
}

.resource-link[target="_blank"]::after {
  content: " (opens in new tab)";
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.resource-link-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 0.5rem;
  font-size: 1.25rem;
}

.resource-link-content h5 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
}

.resource-link-content p {
  margin: 0.25rem 0 0;
  font-size: 0.85rem;
  color: var(--gray-600);
}

/* Share Section */
.share-section {
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
}

.share-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--white);
  color: var(--primary);
  border: 2px solid var(--gray-300);
  border-radius: 0.5rem;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.share-btn:hover,
.share-btn:focus {
  background-color: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  outline: 3px solid var(--accent-light);
  outline-offset: 2px;
}

/* Final CTA */
.final-cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
  padding: 4rem 3rem;
}

.final-cta h2,
.final-cta .lead {
  color: var(--white);
}

/* Footer */
.footer {
  background-color: var(--dark);
  color: var(--white);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer a {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition);
}

.footer a:hover,
.footer a:focus {
  color: var(--white);
  text-decoration: underline;
  outline: 2px solid var(--accent-light);
  outline-offset: 2px;
}

/* Responsive Design */
@media (max-width: 991.98px) {
  .hero-title {
    font-size: 2.25rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .download-cta {
    padding: 2rem;
  }
  
  .content-section {
    padding: 2rem;
  }
  
  .table-of-contents {
    position: static;
    margin-bottom: 2rem;
  }
}

@media (max-width: 767.98px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-section {
    padding: 3rem 0 2rem;
  }
  
  .hero-title {
    font-size: 1.875rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .download-cta {
    padding: 1.5rem;
    margin-top: -2rem;
  }
  
  .content-section {
    padding: 1.5rem;
  }
  
  .pro-tip {
    flex-direction: column;
  }
  
  .next-steps-grid {
    grid-template-columns: 1fr;
  }
  
  .resource-links {
    grid-template-columns: 1fr;
  }
  
  .file-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

@media (max-width: 575.98px) {
  .btn-download {
    width: 100%;
    justify-content: center;
  }
  
  .instruction-box,
  .pro-tip,
  .encouragement-box {
    padding: 1.5rem;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .footer,
  .download-cta,
  .table-of-contents,
  .share-section {
    display: none;
  }
  
  .hero-section {
    background: none;
    color: var(--dark);
    padding: 1rem 0;
  }
  
  .content-section {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
}

/* Focus visible for better keyboard navigation */
*:focus-visible {
  outline: 3px solid var(--accent-light);
  outline-offset: 2px;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}