/* CSS Variables */
:root {
  /* Tetradic Color Scheme */
  --color-primary: #FF6B35;
  --color-primary-dark: #E85529;
  --color-primary-light: #FF8A5C;
  --color-secondary: #35A7FF;
  --color-secondary-dark: #2991E8;
  --color-secondary-light: #5CB8FF;
  --color-tertiary: #6B35FF;
  --color-tertiary-dark: #5529E8;
  --color-tertiary-light: #8A5CFF;
  --color-quaternary: #A7FF35;
  --color-quaternary-dark: #91E829;
  --color-quaternary-light: #B8FF5C;
  
  /* Neutral Colors */
  --color-dark: #1a1a1a;
  --color-dark-light: #2d2d2d;
  --color-light: #f8f9fa;
  --color-white: #ffffff;
  --color-gray: #6c757d;
  --color-gray-light: #e9ecef;
  
  /* Dynamic Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  --gradient-secondary: linear-gradient(135deg, var(--color-tertiary), var(--color-quaternary));
  --gradient-dark: linear-gradient(135deg, var(--color-dark), var(--color-dark-light));
  --gradient-overlay: linear-gradient(135deg, rgba(255, 107, 53, 0.9), rgba(53, 167, 255, 0.9));
  
  /* Typography */
  --font-heading: 'Raleway', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  /* Spacing */
  --section-padding: 80px 0;
  --container-padding: 0 15px;
  --card-padding: 2rem;
  
  /* Shadows & Effects */
  --shadow-light: 0 5px 15px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 10px 30px rgba(0, 0, 0, 0.12);
  --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.16);
  --blur-effect: backdrop-filter: blur(10px);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-xl: 30px;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  margin-bottom: 1rem;
  font-size: 1.1rem;
  line-height: 1.7;
}

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

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

/* Global Button Styles */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-medium);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::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: var(--transition-medium);
  z-index: -1;
}

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

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  color: var(--color-white);
}

.btn-outline-primary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

.btn-lg {
  padding: 18px 40px;
  font-size: 1.1rem;
}

/* Header Styles */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 107, 53, 0.1);
  z-index: 1000;
  transition: var(--transition-medium);
}

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

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-dark);
  margin: 0 15px;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 50%;
  background: var(--gradient-primary);
  transition: var(--transition-medium);
  transform: translateX(-50%);
}

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

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

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-overlay);
  z-index: 1;
}

.hero-section .container {
  position: relative;
  z-index: 2;
}

.hero-title {
  color: var(--color-white);
  font-weight: 700;
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  color: var(--color-white);
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

@media (max-width: 768px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

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

.section-title {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: var(--gradient-primary);
  margin: 1rem auto 0;
  border-radius: 2px;
}

/* Statistics Section */
.statistics-section {
  background: var(--gradient-dark);
  color: var(--color-white);
}

.stat-card {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-quaternary);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1.1rem;
  opacity: 0.9;
  margin: 0;
}

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

.mission-text {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.image-container {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

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

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

/* Methodology Section */
.methodology-section {
  background: var(--color-white);
}

.methodology-card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-medium);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.methodology-card .card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.methodology-card .card-body {
  padding: var(--card-padding);
  text-align: center;
}

.methodology-card .card-title {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

/* History Section */
.history-section {
  background: var(--color-light);
}

.history-text {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

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

.resource-card {
  padding: var(--card-padding);
  border-radius: var(--border-radius-lg);
  background: var(--color-light);
  border: 1px solid var(--color-gray-light);
  transition: var(--transition-medium);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
  background: var(--color-white);
}

/* Awards Section */
.awards-section {
  background: var(--gradient-secondary);
  color: var(--color-white);
}

.award-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  transition: var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.award-card:hover {
  transform: translateY(-10px);
  background: rgba(255, 255, 255, 0.15);
}

.award-card .card-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.award-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.award-card .card-body {
  padding: var(--card-padding);
  text-align: center;
}

/* Events Section */
.events-section {
  background: var(--color-light);
}

.event-card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-medium);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

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

.event-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.event-date {
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 1rem;
}

.event-card .card-body {
  padding: var(--card-padding);
  text-align: center;
}

/* Blog Section */
.blog-section {
  background: var(--color-white);
}

.blog-card {
  border: none;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-medium);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.blog-card .card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.blog-card .card-body {
  padding: var(--card-padding);
  text-align: center;
}

.blog-card .card-title {
  color: var(--color-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

/* Sustainability Section */
.sustainability-section {
  background: var(--color-light);
}

.sustainability-text {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* FAQ Section */
.faq-section {
  background: var(--color-white);
}

.accordion-item {
  border: none;
  border-radius: var(--border-radius-md);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-light);
}

.accordion-button {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-dark);
  background: var(--color-white);
  border: none;
  border-radius: var(--border-radius-md);
}

.accordion-button:not(.collapsed) {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(255, 107, 53, 0.25);
}

.accordion-body {
  font-size: 1.1rem;
  line-height: 1.7;
  padding: 1.5rem;
}

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

.contact-info {
  padding: 2rem;
}

.contact-item {
  margin-bottom: 2rem;
}

.contact-item strong {
  color: var(--color-quaternary);
  font-size: 1.1rem;
}

.contact-form {
  background: rgba(255, 255, 255, 0.1);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-label {
  color: var(--color-dark);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form-control,
.form-select {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: var(--border-radius-sm);
  padding: 12px 16px;
  font-size: 1rem;
  transition: var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.25rem rgba(255, 107, 53, 0.25);
}

/* Footer */
.footer {
  background: var(--gradient-dark);
  color: var(--color-white);
  padding: 60px 0 20px;
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: var(--gradient-secondary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-subtitle {
  color: var(--color-quaternary);
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-text {
  opacity: 0.9;
  line-height: 1.7;
}

.footer-links {
  list-style: none;
  padding: 0;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
  text-decoration: none;
}

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

.footer-divider {
  border-color: rgba(255, 255, 255, 0.2);
  margin: 2rem 0 1rem;
}

.footer-copyright {
  opacity: 0.7;
  margin: 0;
}

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

.success-content {
  text-align: center;
  max-width: 600px;
  padding: 2rem;
}

.success-icon {
  font-size: 4rem;
  color: var(--color-quaternary);
  margin-bottom: 2rem;
}

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

.content-page .container {
  max-width: 800px;
}

.content-page h1 {
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.content-page h2 {
  color: var(--color-secondary);
  margin-top: 3rem;
  margin-bottom: 1.5rem;
}

.content-page p {
  margin-bottom: 1.5rem;
}

.content-page ul {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.content-page li {
  margin-bottom: 0.5rem;
}

/* About Page Styles */
.about-hero {
  background: var(--gradient-primary);
  color: var(--color-white);
  text-align: center;
  padding: 120px 0 80px;
}

.team-member {
  text-align: center;
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-light);
  transition: var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.team-member:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.team-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 1.5rem;
  border: 4px solid var(--color-primary);
}

.team-name {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.team-role {
  color: var(--color-secondary);
  font-weight: 600;
  margin-bottom: 1rem;
}

/* Scroll-based Animations */
@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);
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

.animate-on-scroll.animated {
  animation: fadeInUp 0.6s ease forwards;
}

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

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

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

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

.hover-lift {
  transition: var(--transition-medium);
}

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

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
  }
  
  .hero-section {
    background-attachment: scroll;
  }
  
  .parallax-bg {
    background-attachment: scroll;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
  
  .methodology-card,
  .blog-card,
  .event-card {
    margin-bottom: 2rem;
  }
  
  .contact-form {
    padding: 1.5rem;
  }
  
  .team-photo {
    width: 150px;
    height: 150px;
  }
}

@media (max-width: 576px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 1rem;
  }
  
  .stat-card {
    padding: 1.5rem 1rem;
  }
  
  .contact-info,
  .contact-form {
    padding: 1.5rem;
  }
}

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

.pulse {
  animation: pulse 2s infinite;
}

/* Smooth scrolling for older browsers */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}