/* ===================================
   St. Johnsbury Academy Jeju - Custom Styles
   Performance-optimized, accessible, responsive design
   =================================== */

/* CSS Variables for Design System */
:root {
  /* Color Palette */
  --primary: #195231;
  --secondary: #193f2b;
  --light: #fafdfb;
  --white: #ffffff;
  --text-dark: #333333;
  --text-muted: #666666;
  --text-light: #999999;
  --border-light: rgba(25, 82, 49, 0.1);
  --border-medium: rgba(25, 82, 49, 0.2);
  
  /* Transitions */
  --transition: all 0.3s ease;
  --transition-fast: all 0.2s ease;
  --transition-slow: all 0.5s ease;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(25, 63, 43, 0.1);
  --shadow-md: 0 4px 8px rgba(25, 63, 43, 0.15);
  --shadow-lg: 0 10px 20px rgba(25, 63, 43, 0.1);
  --shadow-xl: 0 20px 40px rgba(25, 63, 43, 0.15);
  
  /* Spacing */
  --section-padding: 5rem 0;
  --container-padding: 1rem;
  
  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition: none;
    --transition-fast: none;
    --transition-slow: none;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

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

body {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--light);
  overflow-x: hidden;
}

/* Focus Indicators for Accessibility */
*:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.btn:focus,
.form-control:focus,
.form-select:focus {
  box-shadow: 0 0 0 0.2rem rgba(25, 82, 49, 0.25);
}

/* Skip Navigation */
.skip-nav {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: var(--white);
  padding: 8px 16px;
  text-decoration: none;
  z-index: var(--z-tooltip);
  border-radius: 4px;
  font-weight: var(--font-weight-medium);
  transition: var(--transition);
}

.skip-nav:focus {
  top: 6px;
  color: var(--white);
}

/* Language Toggle */
.language-toggle {
  z-index: var(--z-fixed);
}

.language-toggle .btn {
  backdrop-filter: blur(10px);
  background-color: rgba(25, 82, 49, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition);
}

.language-toggle .btn:hover {
  background-color: var(--primary);
  transform: translateY(-2px);
}

/* Navigation Styles */
.navbar {
  backdrop-filter: blur(10px);
  background-color: rgba(25, 82, 49, 0.95) !important;
  transition: var(--transition);
  padding: 1rem 0;
}

.navbar.scrolled {
  background-color: var(--primary) !important;
  padding: 0.5rem 0;
  box-shadow: var(--shadow-md);
}

.navbar-brand {
  font-weight: var(--font-weight-bold);
  font-size: 1.25rem;
  transition: var(--transition);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

/* Logo Flag Animation */
.navbar-brand img {
  animation: floatFlag 3s ease-in-out infinite;
}

@keyframes floatFlag {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-5px);
  }
  100% {
    transform: translateY(0px);
  }
}

.navbar-nav .nav-link {
  font-weight: var(--font-weight-medium);
  padding: 0.5rem 1rem;
  transition: var(--transition);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--white);
  transition: var(--transition);
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

.dropdown-menu {
  border: none;
  box-shadow: var(--shadow-lg);
  border-radius: 8px;
  padding: 0.5rem 0;
  margin-top: 0.5rem;
}

.dropdown-item {
  padding: 0.5rem 1.5rem;
  transition: var(--transition);
  font-weight: var(--font-weight-medium);
}

.dropdown-item:hover {
  background-color: rgba(25, 82, 49, 0.1);
  color: var(--primary);
  transform: translateX(5px);
}

/* Hero Section */
.hero-section {
  height: 100vh;
  min-height: 600px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  z-index: -2;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(25, 82, 49, 0.8) 0%, rgba(25, 63, 43, 0.6) 100%);
  z-index: -1;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  animation: fadeInUp 1s ease-out;
}

.hero-content h1 {
  font-weight: var(--font-weight-bold);
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content .lead {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-content .btn {
  font-weight: var(--font-weight-semibold);
  padding: 0.75rem 2rem;
  border-radius: 50px;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-content .btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Program Cards */
.program-card {
  transition: var(--transition);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  background: var(--white);
  height: 100%;
}

.program-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-medium);
}

.program-card .card-img-top {
  transition: var(--transition);
}

.program-card:hover .card-img-top {
  transform: scale(1.05);
}

.program-card .card-body {
  padding: 1.5rem;
}

.program-card .card-title {
  font-weight: var(--font-weight-bold);
  margin-bottom: 1rem;
}

.program-card .btn {
  border-radius: 25px;
  font-weight: var(--font-weight-medium);
  transition: var(--transition);
}

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

/* Carousel Customization */
.carousel-item {
  transition: transform 0.6s ease-in-out;
}

.carousel-control-prev,
.carousel-control-next {
  width: 5%;
  opacity: 0.8;
  transition: var(--transition);
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  opacity: 1;
}

.carousel-indicators button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin: 0 4px;
  transition: var(--transition);
}

.carousel-indicators button.active {
  background-color: var(--primary);
}

/* Stepper Component */
.stepper-wrapper {
  display: flex;
  justify-content: space-between;
  margin: 2rem 0;
  position: relative;
}

.stepper-wrapper::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: #e0e0e0;
  z-index: 1;
}

.stepper-item {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}

.step-counter {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: #e0e0e0;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: 1.25rem;
  margin: 0 auto 1rem;
  transition: var(--transition);
}

.stepper-item.completed .step-counter {
  background-color: var(--primary);
  color: var(--white);
}

.stepper-item.active .step-counter {
  background-color: var(--secondary);
  color: var(--white);
  animation: pulse 2s infinite;
}

.step-name {
  font-weight: var(--font-weight-semibold);
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.step-description {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Gallery Filters */
.btn-group .btn {
  border-radius: 25px;
  margin: 0 0.25rem;
  font-weight: var(--font-weight-medium);
  transition: var(--transition);
}

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

/* Gallery Grid */
#galleryGrid .col {
  transition: var(--transition);
}

#galleryGrid .col:hover {
  transform: scale(1.02);
}

#galleryGrid img {
  border-radius: 8px;
  transition: var(--transition);
  cursor: pointer;
}

#galleryGrid img:hover {
  box-shadow: var(--shadow-lg);
}

/* Accordion Customization */
.accordion-item {
  border: 1px solid var(--border-light);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
}

.accordion-button {
  font-weight: var(--font-weight-semibold);
  color: var(--text-dark);
  background-color: var(--white);
  border: none;
  padding: 1.25rem 1.5rem;
  transition: var(--transition);
}

.accordion-button:not(.collapsed) {
  background-color: rgba(25, 82, 49, 0.05);
  color: var(--primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(25, 82, 49, 0.25);
}

.accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23195231'/%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  transition: var(--transition);
}

.accordion-body {
  padding: 1.5rem;
  background-color: var(--white);
}

/* Stats Counter Animation */
.stats-counter {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary);
  display: block;
}

/* Sticky CTA */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--border-light);
  padding: 0.75rem;
  z-index: var(--z-sticky);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

/* Mobile Bottom Navigation */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--border-light);
  padding: 0.5rem 0;
  z-index: var(--z-sticky);
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.mobile-bottom-nav .nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.mobile-bottom-nav .nav-link:hover,
.mobile-bottom-nav .nav-link.active {
  color: var(--primary);
  transform: translateY(-2px);
}

.mobile-bottom-nav .nav-link i {
  font-size: 1.25rem;
  margin-bottom: 0.25rem;
}

.mobile-bottom-nav .nav-link small {
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
}

/* Button Customizations */
.btn-primary {
  background-color: var(--primary);
  border-color: var(--primary);
  font-weight: var(--font-weight-semibold);
  transition: var(--transition);
}

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

.btn-outline-primary {
  color: var(--primary);
  border-color: var(--primary);
  font-weight: var(--font-weight-semibold);
  transition: var(--transition);
}

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

/* Section Spacing */
section {
  padding: var(--section-padding);
}

.bg-light {
  background-color: rgba(250, 253, 251, 0.8) !important;
}

/* Typography Enhancements */
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
}

.lead {
  font-weight: var(--font-weight-normal);
  font-size: 1.125rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Intersection Observer Animation Classes */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

.animate-slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-left.animated {
  opacity: 1;
  transform: translateX(0);
}

.animate-slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-slide-right.animated {
  opacity: 1;
  transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 991.98px) {
  .hero-section {
    height: 80vh;
    min-height: 500px;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-content .lead {
    font-size: 1.125rem;
  }
  
  .stepper-wrapper {
    flex-direction: column;
    align-items: center;
  }
  
  .stepper-wrapper::before {
    display: none;
  }
  
  .stepper-item {
    margin-bottom: 2rem;
  }
  
  .stepper-item:last-child {
    margin-bottom: 0;
  }
}

@media (max-width: 767.98px) {
  :root {
    --section-padding: 3rem 0;
  }
  
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-content .lead {
    font-size: 1rem;
  }
  
  .hero-content .btn {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
  }
  
  .display-5 {
    font-size: 2rem;
  }
  
  .program-card .card-body {
    padding: 1rem;
  }
  
  .mobile-bottom-nav {
    padding-bottom: env(safe-area-inset-bottom);
  }
  
  .sticky-cta {
    padding-bottom: calc(0.75rem + env(safe-area-inset-bottom));
  }
}

@media (max-width: 575.98px) {
  .hero-content h1 {
    font-size: 1.75rem;
  }
  
  .display-5 {
    font-size: 1.75rem;
  }
  
  .btn-group .btn {
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
    margin: 0.125rem;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-light: rgba(25, 82, 49, 0.3);
    --border-medium: rgba(25, 82, 49, 0.5);
  }
  
  .program-card {
    border-width: 2px;
  }
  
  .btn-outline-primary {
    border-width: 2px;
  }
}

/* Print Styles */
@media print {
  .navbar,
  .sticky-cta,
  .mobile-bottom-nav,
  .language-toggle,
  .carousel-control-prev,
  .carousel-control-next,
  .carousel-indicators {
    display: none !important;
  }
  
  .hero-section {
    height: auto;
    min-height: auto;
    page-break-after: always;
  }
  
  .hero-video,
  .hero-overlay {
    display: none;
  }
  
  .hero-content {
    color: var(--text-dark);
  }
  
  section {
    page-break-inside: avoid;
  }
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Performance Optimizations */
.hero-video,
.program-card img,
#galleryGrid img {
  will-change: transform;
}

/* Lazy Loading Placeholder */
.lazy-placeholder {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Animated Button */
.animated-button {
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.animated-button .button-text {
  position: relative;
  z-index: 2;
}

.animated-button .button-icon {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0;
  transition: all 0.3s ease;
  z-index: 2;
}

.animated-button:hover .button-icon {
  right: 25px;
  opacity: 1;
}

.animated-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: all 0.6s ease;
  z-index: 1;
}

.animated-button:hover::before {
  left: 100%;
}

/* Animated Shapes */
.shape {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  opacity: 0;
  animation: floatShape 15s infinite ease-in-out;
  z-index: -1;
}

.shape-1 {
  width: 80px;
  height: 80px;
  top: 10%;
  left: 5%;
  animation-delay: 0s;
}

.shape-2 {
  width: 120px;
  height: 120px;
  top: 30%;
  right: 10%;
  animation-delay: 3s;
}

.shape-3 {
  width: 60px;
  height: 60px;
  bottom: 20%;
  left: 20%;
  animation-delay: 6s;
}

.shape-4 {
  width: 100px;
  height: 100px;
  top: 50%;
  left: 40%;
  animation-delay: 9s;
}

.shape-5 {
  width: 90px;
  height: 90px;
  bottom: 5%;
  right: 25%;
  animation-delay: 12s;
}

@keyframes floatShape {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 0.1;
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
    opacity: 0.2;
  }
  100% {
    transform: translateY(0) rotate(360deg);
    opacity: 0.1;
  }
}

/* Our People Section - Paper Card Effect */
.paper-card {
  position: relative;
  perspective: 1000px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.paper-card .card-body {
  padding: 1.5rem;
  position: relative;
  z-index: 2;
}

.paper-card img {
  transition: var(--transition);
}

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

.paper-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, rgba(25, 82, 49, 0.05), rgba(25, 63, 43, 0.05));
  z-index: 1;
  opacity: 0;
  transition: var(--transition);
}

.paper-card:hover::before {
  opacity: 1;
}

/* 3D Flip Effect for Our People Cards */
.paper-card {
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.paper-card:hover {
  transform: rotateY(10deg) rotateX(5deg) scale(1.02);
}

/* Campus Life Section - Background Image and Card Style */
.campus-life-section {
  background: url('../assets/images/campus-life-bg.webp') no-repeat center center / cover;
  position: relative;
  z-index: 1;
}

.campus-life-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: -1;
}

.campus-life-section h2,
.campus-life-section p {
  color: var(--white);
}

.campus-life-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.campus-life-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.campus-life-card img {
  border-radius: 8px;
  margin-bottom: 1rem;
}

.campus-life-card h5 {
  font-weight: var(--font-weight-bold);
  color: var(--primary);
}

/* Dynamic Elements and Animations */
.section-bg-1 {
  background-color: var(--light);
}

.section-bg-2 {
  background-color: var(--primary);
}

.section-bg-3 {
  background-color: var(--light);
}

.section-bg-4 {
  background-color: var(--secondary);
}

.section-bg-5 {
  background-color: var(--light);
}

.section-bg-6 {
  background-color: var(--primary);
}

.section-bg-7 {
  background-color: var(--light);
}

/* Media Queries for responsiveness */
@media (max-width: 768px) {
  .campus-life-card {
    padding: 1rem;
  }
}