/* ==================== Root Variables ==================== */
:root {
  /* Color Scheme - Analogous */
  --primary-color: #2d5bff;
  --primary-light: #4e75ff;
  --primary-dark: #1a3dbb;
  --secondary-color: #0095ff;
  --secondary-light: #33acff;
  --secondary-dark: #0071cc;
  --accent-color: #4ecbff;
  --accent-light: #71d7ff;
  --accent-dark: #00a3e0;
  
  /* Neutrals */
  --dark: #1a1a2e;
  --dark-mid: #2a2a42;
  --mid: #404056;
  --light-mid: #6a6a8e;
  --light: #f2f6ff;
  --white: #ffffff;
  
  /* Shadows & Effects */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 15px 50px rgba(0, 0, 0, 0.1);
  
  /* Typography */
  --font-heading: 'Raleway', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;
  
  /* Borders */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.65, 0.05, 0.36, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  color: var(--dark);
}

h1 {
  font-size: 3.5rem;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--space-sm);
}

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

a:hover {
  color: var(--primary-light);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-lg);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--primary-color);
  border-radius: var(--border-radius-sm);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

section {
  padding: var(--space-lg) 0;
  position: relative;
}

/* ==================== Button Styles ==================== */
.btn, 
button, 
input[type='submit'] {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  font-family: var(--font-heading);
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
  font-size: 0.875rem;
  letter-spacing: 1px;
}

.primary-btn {
  background-color: var(--primary-color);
  color: var(--white);
}

.primary-btn:hover {
  background-color: var(--primary-dark);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.secondary-btn {
  background-color: var(--secondary-color);
  color: var(--white);
}

.secondary-btn:hover {
  background-color: var(--secondary-dark);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ==================== Header & Navigation ==================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.main-header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.main-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--space-sm);
}

.logo {
  flex-shrink: 0;
}

.logo img {
  height: 50px;
  width: auto;
}

.main-nav ul {
  display: flex;
  list-style: none;
}

.main-nav ul li {
  margin-left: var(--space-md);
}

.main-nav ul li a {
  color: var(--dark);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.5rem 0;
  position: relative;
}

.main-nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-normal);
}

.main-nav ul li a:hover::after,
.main-nav ul li a.active::after {
  width: 100%;
}

.burger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.burger-menu span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--dark);
  transition: all var(--transition-normal);
}

/* ==================== Hero Section ==================== */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 0;
  margin-top: 0;
  position: relative;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg);
  z-index: 1;
}

.hero-content h1 {
  color: var(--white);
  margin-bottom: var(--space-md);
  font-size: 3.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: fadeInDown 1s ease-out;
}

.hero-content p {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out 0.3s;
  animation-fill-mode: both;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  animation: fadeIn 1s ease-out 0.6s;
  animation-fill-mode: both;
}

/* ==================== About Us Section ==================== */
.about-us {
  background-color: var(--light);
}

.about-content {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.about-image {
  flex: 1;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(-2deg);
  transition: transform var(--transition-slow);
}

.about-image:hover {
  transform: rotate(0deg) scale(1.02);
}

.about-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

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

.about-text {
  flex: 1;
}

.about-text p {
  margin-bottom: var(--space-sm);
}

/* ==================== Mission Section ==================== */
.mission {
  background-color: var(--white);
}

.mission-content {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.mission-text {
  flex: 1;
}

.mission-image {
  flex: 1;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  transition: transform var(--transition-slow);
}

.mission-image:hover {
  transform: rotate(0deg) scale(1.02);
}

.mission-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

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

/* ==================== Gallery Section ==================== */
.gallery {
  background-color: var(--light);
  overflow: hidden;
}

.gallery-slider {
  position: relative;
}

.gallery-container {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  scrollbar-width: none; /* Firefox */
}

.gallery-container::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.gallery-item {
  flex: 0 0 auto;
  width: 350px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  scroll-snap-align: start;
}

.gallery-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.image-container {
  width: 100%;
  height: 250px;
  overflow: hidden;
}

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

.gallery-item:hover .image-container img {
  transform: scale(1.1);
}

.gallery-caption {
  padding: var(--space-sm);
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gallery-caption h3 {
  margin-bottom: var(--space-xs);
  color: var(--dark);
}

.gallery-controls {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.prev-btn, .next-btn {
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.prev-btn:hover, .next-btn:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-md);
}

.prev-btn span, .next-btn span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.prev-btn::before, .next-btn::before {
  content: '';
  width: 10px;
  height: 10px;
  border-top: 2px solid var(--white);
  border-right: 2px solid var(--white);
  display: block;
}

.prev-btn::before {
  transform: rotate(-135deg);
}

.next-btn::before {
  transform: rotate(45deg);
}

/* ==================== Resources Section ==================== */
.resources {
  background-color: var(--white);
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.resource-card {
  background-color: var(--light);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

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

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

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

.card-content {
  padding: var(--space-sm);
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-content h3 {
  margin-bottom: var(--space-xs);
  color: var(--dark);
}

.card-content a {
  color: var(--primary-color);
  font-weight: 600;
  transition: color var(--transition-normal);
}

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

/* ==================== Research Section ==================== */
.research {
  background-color: var(--light);
}

.research-content {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.research-image {
  flex: 1;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.research-image img {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

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

.research-text {
  flex: 1;
}

.research-stats {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-md);
}

.stat-item {
  text-align: center;
  flex: 1;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--space-xs);
  font-family: var(--font-heading);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--light-mid);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ==================== Contact Section ==================== */
.contact {
  background-color: var(--white);
}

.contact-content {
  display: flex;
  gap: var(--space-lg);
}

.contact-info, .contact-form {
  flex: 1;
}

.contact-info h3, .contact-form h3 {
  margin-bottom: var(--space-md);
  color: var(--dark);
}

.contact-info p {
  margin-bottom: var(--space-sm);
}

.contact-map {
  margin: var(--space-md) 0;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.contact-map img {
  width: 100%;
  height: auto;
}

.working-hours {
  margin-top: var(--space-md);
}

.working-hours h4 {
  margin-bottom: var(--space-xs);
  color: var(--dark);
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-xs);
  font-weight: 600;
  color: var(--dark);
}

.form-group input, 
.form-group select, 
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-body);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(45, 91, 255, 0.1);
}

/* ==================== Footer ==================== */
.main-footer {
  background-color: var(--dark);
  color: var(--white);
  padding: var(--space-lg) 0 var(--space-sm);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-logo {
  flex: 1 1 300px;
}

.footer-logo img {
  margin-bottom: var(--space-sm);
}

.footer-logo p {
  color: var(--light);
}

.footer-links {
  flex: 1 1 200px;
}

.footer-links h4, .footer-contact h4 {
  color: var(--white);
  margin-bottom: var(--space-sm);
  position: relative;
  padding-bottom: var(--space-xs);
}

.footer-links h4::after, .footer-contact h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary-color);
}

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

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

.footer-links ul li a {
  color: var(--light);
  transition: color var(--transition-normal);
}

.footer-links ul li a:hover {
  color: var(--primary-light);
}

.footer-contact {
  flex: 1 1 300px;
}

.footer-contact p {
  color: var(--light);
  margin-bottom: var(--space-xs);
}

.social-links {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.social-links a {
  color: var(--light);
  font-weight: 600;
  transition: color var(--transition-normal);
}

.social-links a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  color: var(--light-mid);
  margin-bottom: 0;
}

.legal-links {
  display: flex;
  gap: var(--space-sm);
}

.legal-links a {
  color: var(--light-mid);
  transition: color var(--transition-normal);
}

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

/* ==================== Additional Pages ==================== */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg);
}

.success-content {
  max-width: 600px;
}

.success-content h1 {
  margin-bottom: var(--space-md);
}

.privacy-page, 
.terms-page {
  padding-top: 100px;
}

.privacy-content, 
.terms-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-sm);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ==================== Responsive Styles ==================== */
@media (max-width: 1024px) {
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.25rem;
  }
  
  .about-content, 
  .mission-content, 
  .research-content {
    flex-direction: column;
  }
  
  .about-image, 
  .mission-image, 
  .research-image {
    margin-bottom: var(--space-md);
  }
  
  .contact-content {
    flex-direction: column;
  }
  
  .contact-info, 
  .contact-form {
    width: 100%;
  }
  
  .footer-content {
    gap: var(--space-md);
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-content {
    padding: var(--space-md);
  }
  
  .gallery-item {
    width: 280px;
  }
  
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    padding: var(--space-sm) 0;
  }
  
  .main-nav.show {
    display: block;
  }
  
  .main-nav ul {
    flex-direction: column;
    align-items: center;
  }
  
  .main-nav ul li {
    margin: var(--space-xs) 0;
  }
  
  .burger-menu {
    display: flex;
  }
  
  .burger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  
  .burger-menu.active span:nth-child(2) {
    opacity: 0;
  }
  
  .burger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .legal-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-content {
    padding: var(--space-sm);
  }
  
  .gallery-container {
    padding: 0;
  }
  
  .gallery-item {
    width: 100%;
  }
  
  .research-stats {
    flex-direction: column;
    gap: var(--space-sm);
  }
}