/* Global Variables */
:root {
  --primary: hsl(215, 100%, 60%); /* #47a3ff */
  --primary-dark: hsl(215, 100%, 50%); /* #0080ff */
  --primary-light: hsl(215, 100%, 90%); /* #cce6ff */
  --secondary: hsl(340, 82%, 52%); /* #e91e63 */
  --secondary-light: hsl(340, 82%, 90%); /* #f8c1d3 */
  --accent: hsl(35, 100%, 60%); /* #ffb732 */
  --success: hsl(150, 60%, 40%); /* #2c9d61 */
  --info: hsl(200, 90%, 50%); /* #0d93ff */
  --warning: hsl(40, 100%, 50%); /* #ffa500 */
  --danger: hsl(0, 70%, 50%); /* #e63333 */
  --gray-50: hsl(0, 0%, 98%); /* #fafafa */
  --gray-100: hsl(0, 0%, 96%); /* #f5f5f5 */
  --gray-200: hsl(0, 0%, 90%); /* #e6e6e6 */
  --gray-300: hsl(0, 0%, 85%); /* #d9d9d9 */
  --gray-400: hsl(0, 0%, 65%); /* #a6a6a6 */
  --gray-500: hsl(0, 0%, 50%); /* #808080 */
  --gray-600: hsl(0, 0%, 40%); /* #666666 */
  --gray-700: hsl(0, 0%, 30%); /* #4d4d4d */
  --gray-800: hsl(0, 0%, 20%); /* #333333 */
  --gray-900: hsl(0, 0%, 10%); /* #1a1a1a */
  --border-radius: 12px;
  --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 15px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* General Styles */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* Modern Focus Styles - Replace default yellow outline */
*:focus {
  outline: none !important;
}

/* Focus styles for interactive elements */
*:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2) !important;
  transition: all 0.2s ease !important;
}

/* Button focus styles */
.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 2px !important;
  box-shadow: 0 0 0 4px rgba(71, 163, 255, 0.25) !important;
}

/* Input and form element focus styles */
input[type="text"]:focus-visible,
input[type="search"]:focus-visible,
input[type="email"]:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none !important;
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2) !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease !important;
}

/* Link focus styles */
a:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 2px !important;
  border-radius: 4px !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.15) !important;
}

/* Navigation link focus styles */
.nav-link:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 4px !important;
  border-radius: 6px !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2) !important;
}

/* Card focus styles */
.activity-card:focus-within,
.curriculum-card:focus-within {
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2), var(--shadow-lg);
  transform: translateY(-2px);
  transition: all 0.3s ease;
}

/* Search modal and interactive elements */
#search-input:focus-visible {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2) !important;
}

/* Menu toggle and icon buttons */
button:focus-visible {
  outline: 2px solid var(--primary) !important;
  outline-offset: 2px !important;
  border-radius: 6px !important;
  box-shadow: 0 0 0 3px rgba(71, 163, 255, 0.2) !important;
}

/* Navigation Links */
.nav-link {
  color: var(--gray-600);
  font-weight: 500;
  padding: 0.5rem 0;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
  border-radius: 1px;
}

/* Buttons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background-color: var(--primary);
  color: white;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background-color: white;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

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

/* Curriculum Cards */
.curriculum-card {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

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

.card-image-container {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.curriculum-card:hover .card-image {
  transform: scale(1.05);
}

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 0.5rem;
}

.card-description {
  color: var(--gray-600);
  margin-bottom: 1rem;
}

.card-button {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

.card-button:hover {
  color: var(--primary-dark);
}

/* Feature Cards */
.feature-card {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 0.5rem;
}

.feature-text {
  color: var(--gray-600);
}

/* Activity Cards (for category pages) */
.activity-card {
  background-color: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}

.activity-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.activity-image-container {
  width: 100%;
  height: 12rem;
  overflow: hidden;
}

.activity-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.activity-card:hover .activity-image {
  transform: scale(1.05);
}

.activity-content {
  padding: 1.25rem;
}

.activity-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 0.5rem;
}

.activity-age {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.activity-info {
  color: var(--gray-600);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.activity-detail-link {
  display: inline-flex;
  align-items: center;
  color: var(--primary);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

.activity-detail-link:hover {
  color: var(--primary-dark);
}

/* Activity Detail */
.activity-section {
  background-color: white;
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
}

.activity-section h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.activity-section ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.activity-section li {
  margin-bottom: 0.5rem;
}

.material-item {
  display: flex;
  align-items: center;
  margin-bottom: 0.5rem;
}

.material-item i {
  color: var(--success);
  margin-right: 0.5rem;
}

.step {
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
}

.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 1.5rem;
  height: 1.5rem;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
}

.navigation-buttons {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
}

.nav-button {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background-color: white;
  color: var(--primary);
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition);
  text-decoration: none;
}

.nav-button:hover {
  background-color: var(--gray-100);
  color: var(--primary-dark);
  border-color: var(--primary);
}

.nav-button.prev i {
  margin-right: 0.5rem;
}

.nav-button.next i {
  margin-left: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .card-image-container {
    height: 180px;
  }
  
  .activity-image-container {
    height: 10rem;
  }
  
  .activity-section {
    padding: 1.5rem;
  }
  
  .navigation-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-button {
    width: 100%;
    justify-content: center;
  }
}

/* Modal for activity details */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  overflow-y: auto;
}

.modal-content {
  background-color: white;
  margin: 2rem auto;
  max-width: 800px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-800);
  margin-right: 2rem;
}

.close-modal {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 1.5rem;
  color: var(--gray-500);
  cursor: pointer;
  transition: var(--transition);
}

.close-modal:hover {
  color: var(--danger);
}

.modal-body {
  padding: 1.5rem;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

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

::-webkit-scrollbar-track {
  background: var(--gray-100);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}