/* CSS Variables for Modern Design System */
:root {
  /* Primary Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-secondary: #7c3aed;
  --color-secondary-dark: #6d28d9;
  --color-secondary-light: #8b5cf6;
  
  /* Accent Colors */
  --color-accent: #06b6d4;
  --color-accent-dark: #0891b2;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
  --gradient-hero: linear-gradient(135deg, rgba(37, 99, 235, 0.8) 0%, rgba(124, 58, 237, 0.8) 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.6) 100%);
  
  /* Typography */
  --font-heading: 'Oswald', sans-serif;
  --font-body: 'Nunito', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-900);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-600);
  font-size: 1.1rem;
}

/* Global Button Styles */
.btn,
button,
.button,
input[type="submit"],
input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-body);
  font-weight: var(--font-weight-medium);
  font-size: 1rem;
  line-height: 1;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

.btn::before,
button::before,
.button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
  z-index: 1;
}

.btn:hover::before,
button:hover::before,
.button:hover::before {
  left: 100%;
}

/* Primary Button */
.btn-primary,
.button.is-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.button.is-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Secondary Button */
.btn-secondary,
.button.is-light {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover,
.button.is-light:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Button Sizes */
.btn-large,
.button.is-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.125rem;
  min-height: 56px;
}

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

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

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

.text-white {
  color: var(--color-white) !important;
}

.has-text-white {
  color: var(--color-white) !important;
}

.reveal-up {
  /* opacity: 0; */
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.reveal-up.active {
  opacity: 1;
  transform: translateY(0);
}

/* Navigation */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
}

.navbar.is-scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-lg);
}

.tech-logo {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  font-size: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-item {
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-700);
  transition: color var(--transition-normal);
}

.navbar-item:hover {
  color: var(--color-primary);
}

/* Hero Section */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  z-index: 0;
}.title:not(.is-spaced)+.subtitle{
  margin-top: 0!important;
}

.hero-background::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
  z-index: 1;
}

.parallax-container {
  position: relative;
  overflow: hidden;
}

.hero-body {
  position: relative;
  z-index: 2;
  padding: var(--spacing-3xl) 0;
}

.hero .title,
.hero .subtitle,
.hero p {
  color: var(--color-white);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero .title {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
}

.hero .subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-xl);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
}

/* Stats Section */
.stats-section {
  background: var(--color-gray-50);
  padding: var(--spacing-2xl) 0;
}

.stat-widget {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
}

.stat-widget:hover {
  transform: translateY(-5px);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: 1.1rem;
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
}

/* Card Styles */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-2xl);
}

.card-image {
  position: relative;
  overflow: hidden;
}

.image-container {
  width: 100%;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.card-content {
  padding: var(--spacing-xl);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
}

/* Instructors Section */
.instructor-card {
  height: 100%;
}

.instructor-card .card-content h3 {
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-xs);
}

.instructor-card .subtitle {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

/* Research Section */
.research-card {
  height: 100%;
}

.progress-indicator {
  margin: var(--spacing-md) 0;
}

.progress-bar {
  height: 8px;
  background: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-text {
  font-size: 0.9rem;
  color: var(--color-gray-500);
  font-weight: var(--font-weight-medium);
  margin-top: var(--spacing-xs);
  display: block;
}

/* External Resources Section */
.external-resources {
  background: var(--color-gray-50);
}

.resource-grid {
  display: grid;
  gap: var(--spacing-xl);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.resource-item {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-top: var(--spacing-md);
}

.resource-links .button {
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-md);
}

/* Insights Section */
.insights-accordion {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

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

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

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

.accordion-header h3 {
  margin: 0;
  font-size: 1.25rem;
}

.accordion-icon {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  padding: 0 var(--spacing-xl) var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.accordion-item.active .accordion-content {
  max-height: 200px;
}

.insights-sidebar {
  text-align: center;
}

.insights-sidebar img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* Testimonials Section */
#testimonials {
  background: var(--color-gray-50);
}

.testimonials-slider {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial-slide {
  display: none;
  background: var(--color-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.testimonial-slide.active {
  display: block;
}

.testimonial-avatar {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-full);
  object-fit: cover;
  box-shadow: var(--shadow-lg);
  margin: 0 auto;
}

blockquote {
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.7;
  color: var(--color-gray-700);
  margin-bottom: var(--spacing-lg);
}

cite {
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  font-style: normal;
}

.slider-controls {
  opacity: 0;
  pointer-events: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.slider-btn {
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  font-size: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.slider-btn:hover {
  background: var(--color-primary-dark);
  transform: scale(1.1);
}

.slider-dots {
  display: flex;
  gap: var(--spacing-sm);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: var(--color-gray-300);
  cursor: pointer;
  transition: background var(--transition-normal);
}

.dot.active {
  background: var(--color-primary);
}

/* Careers Section */
.career-card {
  height: 100%;
}

.career-tags {
  margin-top: auto;
  padding-top: var(--spacing-md);
}

.tag {
  display: inline-block;
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  margin: 0 var(--spacing-xs) var(--spacing-xs) 0;
}

/* Contact Section */
#contact {
  background: var(--color-gray-50);
}

.contact-info {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  height: fit-content;
}

.contact-item {
  margin-bottom: var(--spacing-lg);
}

.contact-item strong {
  display: block;
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-900);
  font-weight: var(--font-weight-semibold);
}

.contact-item a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.contact-item a:hover {
  color: var(--color-primary-dark);
}

.contact-form {
  background: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.field {
  margin-bottom: var(--spacing-lg);
}

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

.input,
.textarea,
.select select {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  height: auto;
  transition: border-color var(--transition-normal);
}
.select:not(.is-multiple){
  height: auto!important  ;
}

.input:focus,
.textarea:focus,
.select select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.map-container {
  margin-top: var(--spacing-xl);
}

.map-placeholder {
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-gray-500);
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Footer */
.footer {
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer p {
  color: var(--color-gray-300);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--color-gray-300);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-links a:hover {
  color: var(--color-white);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.social-links a {
  color: var(--color-gray-300);
  text-decoration: none;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  font-weight: var(--font-weight-medium);
}

.social-links a:hover {
  color: var(--color-white);
  background: var(--color-primary);
  transform: translateY(-2px);
}

.footer-divider {
  border: none;
  border-top: 1px solid var(--color-gray-700);
  margin: var(--spacing-xl) 0;
}

/* Success Page Styles */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  text-align: center;
  padding: var(--spacing-xl);
}

.success-content {
  background: var(--color-white);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  max-width: 600px;
  width: 100%;
}

.success-content h1 {
  color: var(--color-success);
  margin-bottom: var(--spacing-lg);
}

.success-content p {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

/* Privacy and Terms Pages */
.content-page {
  padding-top: 100px;
  min-height: 100vh;
}

.content-page .section {
  padding: var(--spacing-2xl) 0;
}

.content-page h2 {
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

.content-page ul, 
.content-page ol {
  margin-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.content-page li {
  margin-bottom: var(--spacing-xs);
  color: var(--color-gray-600);
}

/* Read More Links */
.read-more {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-normal);
}

.read-more:hover {
  color: var(--color-primary-dark);
}

.read-more::after {
  content: '→';
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-normal);
}

.read-more:hover::after {
  transform: translateX(3px);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .hero .title {
    font-size: 2.5rem;
  }
  
  .hero .subtitle {
    font-size: 1.25rem;
  }
  
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  
  .columns {
    display: block;
  }
  
  .column {
    width: 100% !important;
    margin-bottom: var(--spacing-lg);
  }
  
  .testimonial-slide .columns {
    flex-direction: column;
  }
  
  .testimonial-avatar {
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-lg);
  }
  
  .resource-grid {
    grid-template-columns: 1fr;
  }
  
  .slider-controls {
    gap: var(--spacing-md);
  }
  
  .social-links {
    flex-wrap: wrap;
  }
  
  .hero-background {
    background-attachment: scroll;
  }
}

@media (max-width: 480px) {
  .hero .title {
    font-size: 2rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
  
  .btn-large,
  .button.is-large {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
  }
}

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

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

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

/* Parallax Effect */
.parallax-element {
  transform: translateZ(0);
  transition: transform 0.1s ease-out;
}

/* Glassmorphism Effect */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Loading States */
.loading {
  opacity: 0.7;
  pointer-events: none;
}

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

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

/* Scroll Indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: var(--z-fixed);
  transform-origin: 0%;
  transition: transform 0.1s ease-out;
}

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

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}