:root {
  /* Tetrad color scheme */
  --primary-color: #3f51b5;  /* Primary blue */
  --primary-dark: #303f9f;
  --primary-light: #7986cb;
  
  --secondary-color: #ff5722;  /* Secondary orange */
  --secondary-dark: #e64a19;
  --secondary-light: #ff8a65;
  
  --accent-color-1: #4caf50;  /* Accent green */
  --accent-dark-1: #388e3c;
  --accent-light-1: #81c784;
  
  --accent-color-2: #9c27b0;  /* Accent purple */
  --accent-dark-2: #7b1fa2;
  --accent-light-2: #ba68c8;
  
  --white: #ffffff;
  --light-gray: #f5f5f5;
  --medium-gray: #e0e0e0;
  --dark-gray: #424242;
  --black: #212121;
  
  /* Typography */
  --heading-font: 'Roboto', sans-serif;
  --body-font: 'Lato', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.14);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.16);
  
  /* Animations */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-back: -1;
  --z-normal: 1;
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

/* Base Styles */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

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

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

a:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

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

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

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-sm);
}

/* 3D Button Styles */
.btn,
button,
input[type="submit"] {
  display: inline-block;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  z-index: 1;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transform-style: preserve-3d;
}

.btn:before,
button:before,
input[type="submit"]:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  z-index: -1;
  transform: scale3d(1.5, 1.5, 1.5);
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
}

.btn:hover:before,
button:hover:before,
input[type="submit"]:hover:before {
  transform: scale3d(1, 1, 1);
  opacity: 1;
}

.btn:active,
button:active,
input[type="submit"]:active {
  transform: translateY(2px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

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

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

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

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

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

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

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

/* Header & Navigation */
header {
  transition: all var(--transition-normal);
  z-index: var(--z-fixed);
}

.navbar {
  padding: 1rem 0;
  transition: all var(--transition-normal);
}

.navbar-brand img {
  height: 60px;
  width: 60px;
  transition: all var(--transition-normal);
}

.navbar-dark .navbar-nav .nav-link {
  color: var(--white);
  font-weight: 500;
  padding: 0.5rem 1rem;
  position: relative;
  transition: color var(--transition-normal);
}

.navbar-dark .navbar-nav .nav-link:before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background-color: var(--white);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-normal);
}

.navbar-dark .navbar-nav .nav-link:hover:before {
  transform: scaleX(1);
}

.navbar-dark .navbar-nav .nav-link.active:before {
  transform: scaleX(1);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding-top: 120px;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(63, 81, 181, 0.7), rgba(156, 39, 176, 0.7));
  z-index: var(--z-back);
}

.hero-section h1 {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  color: var(--white);
  animation: fadeInUp 1s ease-out;
  transform: translateZ(30px);
}

.hero-section p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  max-width: 700px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
  color: var(--white);
  animation: fadeInUp 1s ease-out 0.2s;
  animation-fill-mode: both;
  transform: translateZ(20px);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translate3d(0, 50px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

/* About Us Section */
#about {
  position: relative;
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.image-container {
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.image-container img {
  transition: transform var(--transition-slow);
  transform: translateZ(0);
  width: 100%;
  object-fit: cover;
}

.image-container:hover img {
  transform: translateZ(20px) scale(1.05);
}

/* Services Section */
#services {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-gray);
  position: relative;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: center;
  border: none;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--white);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
}

.card:hover {
  transform: translateY(-10px) rotateY(5deg);
  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-normal);
}

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

.card-body {
  padding: 1.5rem;
  text-align: center;
  flex-grow: 1;
}

.card-title {
  color: var(--black);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--dark-gray);
  margin-bottom: var(--spacing-sm);
}

.form-check-input {
  cursor: pointer;
  border-color: var(--primary-color);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.card-footer {
  padding: 1rem 1.5rem;
  background-color: transparent;
}

/* Portfolio Section */
#portfolio {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

/* Behind the Scenes Section */
#behind-scenes {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-gray);
}

.order-lg-2 {
  perspective: 1000px;
}

/* Vision Section */
#vision {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.accordion-item {
  background-color: transparent;
  margin-bottom: 1rem;
}

.accordion-button {
  background-color: var(--white);
  color: var(--black);
  font-weight: 600;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  padding: 1.25rem;
}

.accordion-button:not(.collapsed) {
  background-color: var(--primary-light);
  color: var(--primary-dark);
  box-shadow: var(--shadow-md);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--primary-color);
}

.accordion-button::after {
  background-size: 1rem;
  transition: all var(--transition-normal);
}

.accordion-body {
  padding: 1.5rem;
  background-color: var(--white);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Resources Section */
#resources {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-gray);
}

/* Partners Section */
#partners {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

/* Media Section */
#media {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-gray);
}

/* Press Section */
#press {
  padding: var(--spacing-xl) 0;
  background-color: var(--white);
}

.rounded-circle {
  border: 3px solid var(--primary-light);
  padding: 2px;
}

.blockquote {
  font-style: italic;
  border-left: 4px solid var(--primary-light);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}

/* Contact Section */
#contact {
  padding: var(--spacing-xl) 0;
  background-color: var(--light-gray);
}

.form-control, .form-select {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--medium-gray);
  transition: all var(--transition-normal);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(63, 81, 181, 0.25);
}

.form-label {
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--dark-gray);
}

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

footer h3 {
  color: var(--white);
  font-weight: 600;
}

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

footer a {
  color: var(--white);
  transition: color var(--transition-normal);
}

footer a:hover {
  color: var(--primary-light);
  text-decoration: none;
}

footer .input-group {
  box-shadow: var(--shadow-sm);
}

footer hr {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 2rem 0;
}

footer .small {
  color: var(--medium-gray);
}

footer .d-flex a {
  padding: 0.5rem;
  margin-right: 0.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

footer .d-flex a:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

/* Success Page */
.success-page {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-color: var(--light-gray);
}

.success-content {
  padding: 3rem;
  background-color: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  transform-style: preserve-3d;
  perspective: 1000px;
}

.success-icon {
  font-size: 5rem;
  color: var(--accent-color-1);
  margin-bottom: 2rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-30px);
  }
  60% {
    transform: translateY(-15px);
  }
}

/* Terms & Privacy Pages */
.terms-page, .privacy-page {
  padding-top: 100px;
  padding-bottom: var(--spacing-xl);
}

.terms-content, .privacy-content {
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-accent-1 { color: var(--accent-color-1) !important; }
.text-accent-2 { color: var(--accent-color-2) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-accent-1 { background-color: var(--accent-color-1) !important; }
.bg-accent-2 { background-color: var(--accent-color-2) !important; }
.bg-light { background-color: var(--light-gray) !important; }
.bg-dark { background-color: var(--dark-gray) !important; }

.shadow-hover {
  transition: box-shadow var(--transition-normal);
}

.shadow-hover:hover {
  box-shadow: var(--shadow-lg);
}

.card-hover-up {
  transition: transform var(--transition-normal);
}

.card-hover-up:hover {
  transform: translateY(-10px);
}

/* Glassmorphism Effect */
.glass-card {
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

/* Read more links */
.read-more {
  display: inline-block;
  color: var(--primary-color);
  font-weight: 600;
  position: relative;
  padding-right: 1.5rem;
  transition: all var(--transition-normal);
}

.read-more:after {
  content: '→';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  transition: transform var(--transition-normal);
}

.read-more:hover {
  color: var(--primary-dark);
  padding-right: 1.75rem;
}

.read-more:hover:after {
  transform: translate(5px, -50%);
}

/* Responsive Adjustments */
@media (max-width: 1199.98px) {
  .hero-section h1 {
    font-size: 3rem;
  }
}

@media (max-width: 991.98px) {
  .hero-section h1 {
    font-size: 2.5rem;
  }
  
  .hero-section p {
    font-size: 1.1rem;
  }
  
  .navbar-collapse {
    background-color: rgba(0, 0, 0, 0.9);
    padding: 1rem;
    border-radius: var(--radius-md);
  }
  
  .card-image {
    height: 180px;
  }
}

@media (max-width: 767.98px) {
  html {
    font-size: 14px;
  }
  
  .hero-section h1 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .card-image {
    height: 160px;
  }
}

@media (max-width: 575.98px) {
  .hero-section h1 {
    font-size: 1.75rem;
  }
  
  .hero-section p {
    font-size: 1rem;
  }
  
  .btn {
    padding: 0.5rem 1rem;
  }
}

/* Adaptive Typography */
@media screen and (min-width: 320px) {
  body {
    font-size: calc(16px + 0.5vw);
  }
  
  h1 {
    font-size: calc(2rem + 1.5vw);
  }
  
  h2 {
    font-size: calc(1.5rem + 1vw);
  }
  
  h3 {
    font-size: calc(1.2rem + 0.5vw);
  }
}

/* Custom scroll bar */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 10px;
}

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