/* CSS Variables for Bright Color Scheme and Glassmorphism */
:root {
  /* Primary Colors - Bright Theme */
  --primary-color: #ff1744;
  --primary-light: #ff5983;
  --primary-dark: #c4001d;
  --secondary-color: #00e676;
  --secondary-light: #66ffa6;
  --secondary-dark: #00b248;
  
  /* Accent Colors */
  --accent-purple: #d500f9;
  --accent-blue: #2979ff;
  --accent-orange: #ff9100;
  --accent-yellow: #ffea00;
  
  /* Glassmorphism Colors */
  --glass-white: rgba(255, 255, 255, 0.15);
  --glass-light: rgba(255, 255, 255, 0.25);
  --glass-medium: rgba(255, 255, 255, 0.35);
  --glass-strong: rgba(255, 255, 255, 0.45);
  
  /* Background Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--accent-purple));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--accent-blue));
  --gradient-rainbow: linear-gradient(135deg, var(--primary-color), var(--accent-orange), var(--secondary-color), var(--accent-blue));
  --gradient-glass: linear-gradient(135deg, var(--glass-white), var(--glass-light));
  
  /* Text Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #4a4a4a;
  --text-light: #7a7a7a;
  --text-white: #ffffff;
  --text-bright: var(--primary-color);
  
  /* Shadow Variables */
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  --button-shadow: 0 4px 15px rgba(255, 23, 68, 0.3);
  
  /* Border Radius */
  --radius-small: 8px;
  --radius-medium: 16px;
  --radius-large: 24px;
  --radius-xl: 32px;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Merriweather', serif;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #ff1744, #d500f9, #2979ff, #00e676);
  background-attachment: fixed;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.8rem); }
h5 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.2rem); }

p {
  margin-bottom: 1.5rem;
  font-weight: 400;
  color: var(--text-secondary);
}

/* Section Titles */
.section-title {
  color: var(--text-primary);
  font-weight: 800;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.2rem;
  font-weight: 300;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Global Button Styles */
.btn {
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--radius-medium);
  padding: 12px 30px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.fixed-top{
  position: relative;
}
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left var(--transition-slow);
}

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

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-white);
  box-shadow: var(--button-shadow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 23, 68, 0.4);
  color: var(--text-white);
}

.btn-secondary {
  background: var(--gradient-secondary);
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(0, 230, 118, 0.3);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 230, 118, 0.4);
  color: var(--text-white);
}

.btn-outline-primary {
  background: var(--glass-white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-outline-light {
  background: var(--glass-white);
  color: var(--text-white);
  border: 2px solid var(--text-white);
  backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
  background: var(--text-white);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

/* Navigation */
.navbar {
  background: var(--glass-white) !important;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding: 1rem 0;
  transition: all var(--transition-normal);
}

.navbar-brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--text-white) !important;
  text-decoration: none;
}

.navbar-nav .nav-link {
  color: var(--text-white) !important;
  font-family: var(--font-heading);
  font-weight: 500;
  margin: 0 10px;
  transition: all var(--transition-normal);
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width var(--transition-normal);
}

.navbar-nav .nav-link:hover::after {
  width: 100%;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background-size: cover !important;
  background-repeat: no-repeat !important;
  background-position: center;
  background-attachment: fixed;
}

.hero-content {
  text-align: center;
  animation: heroFadeIn 1.5s ease-out;
}

.hero-title {
  color: var(--text-white) !important;
  font-weight: 800;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
  color: var(--text-white) !important;
  font-size: 1.3rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Curved Grid Layout */
.curved-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  transform: perspective(1000px) rotateX(5deg);
}

.curved-grid .card {
  transform: rotateY(calc(var(--index, 0) * 3deg));
}

/* Glass Card Styles */
.card {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
  background: var(--glass-light);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  border-radius: var(--radius-medium) var(--radius-medium) 0 0;
  text-align: center;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  margin: 0 auto;
}

.card:hover .card-image img {
  transform: scale(1.1);
}

.card-content {
  padding: 2rem;
  text-align: center;
}

/* Events Calendar Section */
.events-calendar-section {
  padding: 80px 0;
  background: var(--glass-white);
  backdrop-filter: blur(20px);
}

.event-card {
  height: 100%;
}

.event-date {
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: 8px 16px;
  border-radius: var(--radius-small);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-block;
  margin-bottom: 1rem;
}

/* Research Section */
.research-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--glass-white), var(--glass-light));
  backdrop-filter: blur(20px);
}

.research-card {
  background: var(--glass-white);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  padding: 2.5rem;
  height: 100%;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.research-card:hover {
  transform: translateY(-5px);
  background: var(--glass-light);
}

.research-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.research-stats {
  display: flex;
  gap: 2rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-color);
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

/* Gallery Grid */
.research-gallery {
  margin-top: 3rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  transform: perspective(1000px) rotateX(2deg);
}

.gallery-item {
  border-radius: var(--radius-medium);
  overflow: hidden;
  transition: transform var(--transition-normal);
  text-align: center;
}

.gallery-item:hover {
  transform: scale(1.05) rotateY(5deg);
}

.gallery-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  margin: 0 auto;
}

/* External Resources Section */
.external-resources-section {
  padding: 80px 0;
  background: var(--glass-medium);
  backdrop-filter: blur(25px);
}

.resource-card {
  background: var(--glass-white);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  padding: 2rem;
  text-align: center;
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.resource-card:hover {
  transform: translateY(-8px);
  background: var(--glass-light);
}

/* Contact Section */
.contact-section {
  padding: 80px 0;
  background-size: cover !important;
  background-repeat: no-repeat !important;
  background-position: center;
  position: relative;
}

.contact-form-wrapper {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  padding: 3rem;
  box-shadow: var(--glass-shadow);
}

.form-control, .form-select {
  background: var(--glass-white);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-small);
  padding: 12px 16px;
  color: var(--text-primary);
  transition: all var(--transition-normal);
}

.form-control:focus, .form-select:focus {
  background: var(--glass-light);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 23, 68, 0.1);
  outline: none;
}

.form-label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-family: var(--font-heading);
}

.contact-info-card {
  text-align: center;
  margin-bottom: 2rem;
}

.contact-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* Awards Section */
.awards-section {
  padding: 80px 0;
  background: var(--glass-light);
  backdrop-filter: blur(20px);
}

.award-card {
  background: var(--glass-white);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  overflow: hidden;
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.award-card:hover {
  transform: translateY(-10px) rotateY(5deg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.award-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  text-align: center;
}

.award-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  margin: 0 auto;
}

.award-content {
  padding: 1.5rem;
  text-align: center;
}

.award-year {
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: 4px 12px;
  border-radius: var(--radius-small);
  font-size: 0.8rem;
  font-weight: 600;
}

.achievements-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  margin-top: 3rem;
}

.stat-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-item .stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: var(--font-heading);
}

.stat-item .stat-label {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.5rem;
}

/* News Section */
.news-section {
  padding: 80px 0;
  background: var(--glass-white);
  backdrop-filter: blur(20px);
}

.news-card {
  background: var(--glass-white);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  overflow: hidden;
  transition: all var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.news-date {
  background: var(--gradient-secondary);
  color: var(--text-white);
  padding: 6px 12px;
  border-radius: var(--radius-small);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.news-category {
  background: rgba(217, 0, 249, 0.1);
  color: var(--accent-purple);
  padding: 4px 10px;
  border-radius: var(--radius-small);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.read-more-link {
  color: var(--primary-color);
  font-weight: 600;
  text-decoration: none;
  font-family: var(--font-heading);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 1rem;
  transition: all var(--transition-normal);
}

.read-more-link::after {
  content: '→';
  transition: transform var(--transition-normal);
}

.read-more-link:hover {
  color: var(--primary-dark);
  transform: translateX(5px);
}

.read-more-link:hover::after {
  transform: translateX(5px);
}

/* Footer */
.footer-section {
  background: linear-gradient(135deg, #1a1a1a, #2d2d2d);
  color: var(--text-white);
  padding: 60px 0 20px;
}

.footer-brand h5 {
  color: var(--text-white);
  font-weight: 800;
  margin-bottom: 1rem;
}

.footer-links h6, .footer-contact h6, .footer-social h6 {
  color: var(--primary-color);
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links ul li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all var(--transition-normal);
  font-weight: 400;
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.social-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.social-links a {
  color: var(--text-white);
  text-decoration: none;
  padding: 10px 15px;
  background: var(--glass-white);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-small);
  transition: all var(--transition-normal);
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-links a:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(255, 23, 68, 0.3);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  margin-top: 2rem;
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
  margin: 0;
}

/* Animations */
@keyframes heroFadeIn {
  0% {
    opacity: 0;
    transform: translateY(50px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatAnimation {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes drawLine {
  0% {
    width: 0;
  }
  100% {
    width: 100%;
  }
}

/* Drawn Animation Effects */
.draw-on-scroll {
  position: relative;
}

.draw-on-scroll::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  height: 3px;
  background: var(--gradient-primary);
  animation: drawLine 2s ease-out;
}

/* Modal Styles */
.modal-content {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
}

.modal-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.modal-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

/* Success Page Styles */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-rainbow);
  padding: 100px 20px 20px;
}

.success-content {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--glass-shadow);
  max-width: 600px;
  width: 100%;
}

/* Privacy and Terms Pages */
.content-page {
  padding-top: 100px;
  padding-bottom: 60px;
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  min-height: 100vh;
}

.content-wrapper {
  background: var(--glass-light);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  padding: 3rem;
  box-shadow: var(--glass-shadow);
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .research-stats {
    gap: 1rem;
  }
  
  .achievements-stats {
    gap: 2rem;
  }
  
  .gallery-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .curved-grid {
    transform: none;
  }
  
  .curved-grid .card {
    transform: none;
  }
}

@media (max-width: 576px) {
  .contact-form-wrapper {
    padding: 2rem 1.5rem;
  }
  
  .achievements-stats {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .research-stats {
    flex-direction: column;
    gap: 1rem;
  }
  
  .section-title::after {
    width: 40px;
  }
}

/* Utility Classes */
.glass-bg {
  background: var(--glass-white);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.text-gradient {
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.floating {
  animation: floatAnimation 3s ease-in-out infinite;
}

/* Loading Animation */
.loading-spinner {
  width: 50px;
  height: 50px;
  border: 5px solid var(--glass-white);
  border-top: 5px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Scroll-triggered animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease;
}

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

/* Parallax effect */
.parallax-bg {
  background-attachment: fixed;
  background-size: cover !important;
  background-repeat: no-repeat !important;
  background-position: center;
}

/* Form validation styles */
.form-control:invalid {
  border-color: var(--primary-color);
}

.form-control:valid {
  border-color: var(--secondary-color);
}

/* Custom checkbox styles */
.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

/* Main container */
.main-container {
  margin-top: 70px;
}

/* Section spacing */
section {
  padding: 80px 0;
}