* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* CSS-only Loading Screen */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: hideLoader 3s ease-in-out forwards;
}

.loading-content {
  text-align: center;
  animation: fadeInScale 1s ease-out;
}

.loading-logo {
  animation: logoSpin 2s ease-in-out infinite;
  margin-bottom: var(--space-4);
}

.loading-text {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
  animation: textPulse 1.5s ease-in-out infinite;
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto;
}

.loading-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: progressFill 2.5s ease-in-out forwards;
}

@keyframes hideLoader {
  0%,
  90% {
    opacity: 1;
    visibility: visible;
  }
  100% {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes logoSpin {
  0% {
    transform: rotate(0deg) scale(1);
  }
  50% {
    transform: rotate(180deg) scale(1.1);
  }
  100% {
    transform: rotate(360deg) scale(1);
  }
}

@keyframes textPulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

@keyframes progressFill {
  from {
    width: 0%;
  }
  to {
    width: 100%;
  }
}

body {
  font-family: var(--font-sans);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--border-light);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  text-decoration: none;
}

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* CSS-only Theme Toggle */
.theme-toggle {
  position: relative;
}

.theme-toggle-input {
  display: none;
}

.theme-toggle-label {
  display: block;
  width: 60px;
  height: 30px;
  background: var(--gray-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.theme-toggle-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 26px;
  height: 26px;
  background: var(--bg-primary);
  border-radius: 50%;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.theme-icon {
  position: absolute;
  font-size: 12px;
  transition: all var(--transition-normal);
}

.theme-icon.sun {
  opacity: 1;
  transform: rotate(0deg);
}

.theme-icon.moon {
  opacity: 0;
  transform: rotate(180deg);
}

.theme-toggle-input:checked + .theme-toggle-label {
  background: var(--primary);
}

.theme-toggle-input:checked + .theme-toggle-label .theme-toggle-slider {
  transform: translateX(30px);
}

.theme-toggle-input:checked + .theme-toggle-label .theme-icon.sun {
  opacity: 0;
  transform: rotate(-180deg);
}

.theme-toggle-input:checked + .theme-toggle-label .theme-icon.moon {
  opacity: 1;
  transform: rotate(0deg);
}

/* Dark Theme */
body:has(.theme-toggle-input:checked) {
  --bg-primary: var(--gray-900);
  --bg-secondary: var(--gray-800);
  --text-primary: var(--white);
  --text-secondary: var(--gray-300);
  --border-light: var(--gray-700);
  --border-medium: var(--gray-600);
}

body:has(.theme-toggle-input:checked) .nav {
  background: rgba(31, 41, 55, 0.95);
  border-bottom-color: var(--gray-700);
}

body:has(.theme-toggle-input:checked) .feature-card,
body:has(.theme-toggle-input:checked) .pricing-card,
body:has(.theme-toggle-input:checked) .testimonial-card {
  background: var(--gray-800);
  border-color: var(--gray-700);
}

body:has(.theme-toggle-input:checked) .modal-content {
  background: var(--gray-800);
  border-color: var(--gray-700);
}

body:has(.theme-toggle-input:checked) .hero-bg {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
}

.menu-close-trigger {
  display: none;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

.mobile-menu-toggle:checked + .mobile-menu-btn span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle:checked + .mobile-menu-btn span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle:checked + .mobile-menu-btn span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-menu {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: var(--z-dropdown);
}

.mobile-menu-toggle:checked ~ .mobile-menu {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

/* Close menu when any close trigger is activated */
.menu-close-trigger:checked ~ .mobile-menu {
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
}

.mobile-menu-content {
  padding: var(--space-6) var(--container-padding);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: var(--font-medium);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--primary);
}

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-outline {
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: var(--font-semibold);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  font-size: var(--text-base);
  position: relative;
  overflow: hidden;
}

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

.btn-primary::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 0.6s ease;
}

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

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-xl);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.98);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  position: relative;
}

.btn-secondary::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: var(--primary);
  transition: width 0.3s ease;
  z-index: -1;
}

.btn-secondary:hover::after {
  width: 100%;
}

.btn-secondary:hover {
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.4s ease;
  z-index: -1;
}

.btn-outline:hover::before {
  width: 300%;
  height: 300%;
}

.btn-outline:hover {
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-full {
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
  z-index: -2;
}

.hero-shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.shape-1 {
  width: 300px;
  height: 300px;
  background: var(--gradient-primary);
  top: 10%;
  right: 10%;
  animation: floatMorph1 8s ease-in-out infinite;
}

.shape-2 {
  width: 200px;
  height: 200px;
  background: var(--gradient-hero);
  bottom: 20%;
  left: 5%;
  animation: floatMorph2 10s ease-in-out infinite;
}

.shape-3 {
  width: 150px;
  height: 150px;
  background: var(--accent);
  top: 50%;
  left: 80%;
  animation: floatMorph3 7s ease-in-out infinite;
}

/* Add floating particles */
.hero-shapes::before,
.hero-shapes::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  animation: particle-float 15s linear infinite;
}

.hero-shapes::before {
  top: 20%;
  left: 30%;
  animation-delay: -5s;
}

.hero-shapes::after {
  top: 60%;
  right: 25%;
  animation-delay: -10s;
  background: var(--secondary);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(10deg);
  }
}

@keyframes floatMorph1 {
  0%,
  100% {
    transform: translateY(0) rotate(0deg) scale(1);
    border-radius: 50%;
  }
  25% {
    transform: translateY(-30px) rotate(90deg) scale(1.1);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }
  50% {
    transform: translateY(-10px) rotate(180deg) scale(0.9);
    border-radius: 20% 80% 20% 80% / 20% 20% 80% 80%;
  }
  75% {
    transform: translateY(-40px) rotate(270deg) scale(1.05);
    border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
  }
}

@keyframes floatMorph2 {
  0%,
  100% {
    transform: translateY(0) rotate(0deg) scale(1);
    border-radius: 50%;
  }
  33% {
    transform: translateY(-25px) rotate(120deg) scale(1.2);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
  66% {
    transform: translateY(-15px) rotate(240deg) scale(0.8);
    border-radius: 40% 60% 70% 30% / 40% 70% 30% 60%;
  }
}

@keyframes floatMorph3 {
  0%,
  100% {
    transform: translateY(0) rotate(0deg) scale(1);
    border-radius: 50%;
  }
  50% {
    transform: translateY(-35px) rotate(180deg) scale(1.3);
    border-radius: 20% 80% 80% 20% / 80% 20% 20% 80%;
  }
}

@keyframes particle-float {
  0% {
    transform: translateY(100vh) translateX(0) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
    transform: translateY(90vh) translateX(10px) scale(1);
  }
  90% {
    opacity: 1;
    transform: translateY(-10vh) translateX(-10px) scale(1);
  }
  100% {
    transform: translateY(-20vh) translateX(0) scale(0);
    opacity: 0;
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  min-height: 80vh;
  position: relative;
  z-index: 10;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-6xl);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  animation: fadeInUp 1s ease-out;
  position: relative;
  z-index: 15;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 20;
  background-size: 200% 200%;
  animation: gradientShift 3s ease-in-out infinite;
}

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

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  animation: fadeInUp 1s ease-out 0.2s both;
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.stat {
  text-align: center;
  position: relative;
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--primary);
  margin-bottom: var(--space-1);
  position: relative;
  animation: fadeInUp 1s ease-out 0.8s both, scaleIn 0.6s ease-out 1s both;
}

@keyframes scaleIn {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  animation: fadeInUp 1s ease-out 0.6s both;
}

/* Hero Visual */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-light);
  max-width: 400px;
  width: 100%;
}

.card-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-light);
}

.card-dots {
  display: flex;
  gap: var(--space-2);
}

.card-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-medium);
}

.card-dots span:nth-child(1) {
  background: #ff5f56;
}
.card-dots span:nth-child(2) {
  background: #ffbd2e;
}
.card-dots span:nth-child(3) {
  background: #27ca3f;
}

.card-content {
  font-family: "Courier New", monospace;
  font-size: var(--text-sm);
  line-height: 1.6;
}

.code-line {
  margin-bottom: var(--space-2);
}

.code-indent {
  padding-left: var(--space-4);
}

.code-keyword {
  color: var(--primary);
  font-weight: var(--font-semibold);
}

.code-function {
  color: var(--secondary);
}

.code-string {
  color: var(--success);
}

/* Advanced Scroll Animations */
.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  animation: scrollReveal 0.8s ease-out forwards;
}

.scroll-reveal:nth-child(1) {
  animation-delay: 0.1s;
}
.scroll-reveal:nth-child(2) {
  animation-delay: 0.2s;
}
.scroll-reveal:nth-child(3) {
  animation-delay: 0.3s;
}
.scroll-reveal:nth-child(4) {
  animation-delay: 0.4s;
}

@keyframes scrollReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Features Section */
.features {
  padding: var(--space-24) 0;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.features::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 20% 80%,
      rgba(37, 99, 235, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 80% 20%,
      rgba(124, 58, 237, 0.1) 0%,
      transparent 50%
    );
  pointer-events: none;
  animation: backgroundFloat 20s ease-in-out infinite;
}

.features::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
      circle at 30% 40%,
      rgba(59, 130, 246, 0.05) 20%,
      transparent 40%
    ),
    radial-gradient(
      circle at 70% 60%,
      rgba(147, 51, 234, 0.05) 20%,
      transparent 40%
    );
  pointer-events: none;
  animation: backgroundRotate 30s linear infinite;
  z-index: 0;
}

@keyframes backgroundFloat {
  0%,
  100% {
    transform: translateY(0px) scale(1);
    filter: hue-rotate(0deg);
  }
  25% {
    transform: translateY(-10px) scale(1.02);
    filter: hue-rotate(15deg);
  }
  50% {
    transform: translateY(5px) scale(0.98);
    filter: hue-rotate(30deg);
  }
  75% {
    transform: translateY(-5px) scale(1.01);
    filter: hue-rotate(15deg);
  }
}

@keyframes backgroundRotate {
  0% {
    transform: rotate(0deg) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: rotate(180deg) scale(1.1);
    opacity: 0.5;
  }
  100% {
    transform: rotate(360deg) scale(1);
    opacity: 0.3;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
  animation: fadeInUp 1s ease-out;
}

.section-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
  animation: fadeInUp 1s ease-out 0.2s both;
}

/* Intersection Observer Alternative using CSS */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}

.features-grid .feature-card {
  animation: slideInFromBottom 0.8s ease-out forwards;
  animation-delay: calc(var(--animation-order, 0) * 0.2s);
}

.features-grid .feature-card:nth-child(1) {
  --animation-order: 1;
}
.features-grid .feature-card:nth-child(2) {
  --animation-order: 2;
}
.features-grid .feature-card:nth-child(3) {
  --animation-order: 3;
}
.features-grid .feature-card:nth-child(4) {
  --animation-order: 4;
}

@keyframes slideInFromBottom {
  from {
    opacity: 0;
    transform: translateY(50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
.feature-card {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.feature-card:hover::before {
  opacity: 0.05;
}

.feature-card:hover {
  transform: translateY(-8px) rotateX(5deg);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.feature-card:hover .feature-icon svg {
  transform: scale(1.1) rotate(5deg);
  filter: drop-shadow(0 4px 8px rgba(37, 99, 235, 0.3));
}

.feature-card:hover .feature-title {
  color: var(--primary);
}

.feature-card:nth-child(even):hover {
  transform: translateY(-8px) rotateX(-5deg);
}

.feature-card:nth-child(odd):hover {
  animation: bounce-in 0.6s ease;
}

@keyframes bounce-in {
  0% {
    transform: translateY(-8px) scale(1);
  }
  50% {
    transform: translateY(-12px) scale(1.02);
  }
  100% {
    transform: translateY(-8px) scale(1);
  }
}
.feature-icon {
  margin-bottom: var(--space-6);
  display: flex;
  justify-content: center;
}

.feature-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Pricing Section */
.pricing {
  padding: var(--space-24) 0;
  background: var(--bg-primary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-20);
  padding-top: var(--space-6);
}

.pricing-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition-normal);
  transform-style: preserve-3d;
  perspective: 1000px;
  overflow: visible;
  margin-top: var(--space-8);
}

.pricing-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.pricing-card:hover::before {
  opacity: 0.03;
}

.pricing-card:hover {
  transform: translateY(-10px) rotateX(5deg) rotateY(2deg);
  box-shadow: var(--shadow-xl), 0 25px 50px -12px rgba(37, 99, 235, 0.25);
  border-color: var(--primary);
}

.pricing-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: scale(1.05);
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    rgba(37, 99, 235, 0.02) 100%
  );
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-10px) rotateX(5deg) rotateY(-2deg);
  box-shadow: var(--shadow-xl), 0 35px 60px -12px rgba(37, 99, 235, 0.4);
}

.pricing-card:nth-child(odd):hover {
  transform: translateY(-10px) rotateX(5deg) rotateY(-2deg);
}

.pricing-card:nth-child(even):hover {
  transform: translateY(-10px) rotateX(-5deg) rotateY(2deg);
}

.popular-badge {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-primary);
  color: var(--text-white);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  z-index: 20;
  border: 3px solid var(--bg-primary);
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%,
  100% {
    transform: translateX(-50%) scale(1);
    box-shadow: var(--shadow-lg);
  }
  50% {
    transform: translateX(-50%) scale(1.05);
    box-shadow: var(--shadow-xl), 0 0 20px rgba(37, 99, 235, 0.5);
  }
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.plan-name {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.price-currency {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.price-amount {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  color: var(--primary);
  margin: 0 var(--space-1);
}

.price-period {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.plan-description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.pricing-features {
  margin-bottom: var(--space-8);
}

.features-list {
  list-style: none;
}

.features-list li {
  padding: var(--space-3) 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: var(--space-6);
}

.features-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: var(--font-bold);
}

/* Testimonials Section with Auto-Carousel */
.testimonials {
  padding: var(--space-24) 0;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.testimonials::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
      circle at 80% 20%,
      rgba(6, 182, 212, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 20% 80%,
      rgba(124, 58, 237, 0.1) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.testimonials-grid {
  display: flex;
  animation: testimonialSlide 12s infinite;
  gap: var(--space-8);
  width: 300%;
}

.testimonial-card {
  background: var(--bg-primary);
  padding: var(--space-8);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  flex: 0 0 calc(33.333% - var(--space-8));
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.testimonial-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.testimonial-card:hover::before {
  opacity: 0.05;
}

.testimonial-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

@keyframes testimonialSlide {
  0%,
  25% {
    transform: translateX(0);
  }
  33.33%,
  58.33% {
    transform: translateX(-33.333%);
  }
  66.66%,
  91.66% {
    transform: translateX(-66.666%);
  }
  100% {
    transform: translateX(0);
  }
}

.testimonial-content {
  margin-bottom: var(--space-6);
}

.testimonial-content p {
  font-style: italic;
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  font-size: var(--text-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.author-name {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.author-title {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: var(--space-20) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.footer-logo-text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: var(--gray-400);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gray-800);
  border-radius: 50%;
  color: var(--gray-400);
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.footer-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-6);
  color: var(--text-white);
}

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

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--gray-800);
  color: var(--gray-400);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  color: var(--gray-400);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* CSS-only Modal */
.modal-toggle {
  display: none;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-toggle:checked ~ .modal-overlay {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.7) translateY(-50px);
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-light);
}

.modal-toggle:checked ~ .modal-overlay .modal-content {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: var(--text-2xl);
  color: var(--text-secondary);
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.modal-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.modal-header h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.course-options {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.course-option {
  padding: var(--space-4);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.course-option:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.course-icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.course-option h4 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.course-option p {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

/* Advanced Parallax Effect */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    var(--bg-primary) 0%,
    var(--bg-secondary) 100%
  );
  z-index: -2;
  transform: translateZ(0);
  will-change: transform;
}

/* Enhanced Parallax Scroll Effects */
@media (prefers-reduced-motion: no-preference) {
  .hero-shapes {
    animation: parallaxFloat 20s linear infinite;
  }

  .shape-1 {
    animation: floatMorph1 8s ease-in-out infinite,
      parallaxSlow 15s linear infinite;
  }

  .shape-2 {
    animation: floatMorph2 10s ease-in-out infinite,
      parallaxMedium 12s linear infinite;
  }

  .shape-3 {
    animation: floatMorph3 7s ease-in-out infinite,
      parallaxFast 18s linear infinite;
  }

  @keyframes parallaxFloat {
    0% {
      transform: translateY(0px);
    }
    100% {
      transform: translateY(-20px);
    }
  }

  @keyframes parallaxSlow {
    0% {
      transform: translateY(0px) translateX(0px) rotate(0deg);
    }
    25% {
      transform: translateY(-10px) translateX(-5px) rotate(90deg);
    }
    50% {
      transform: translateY(-5px) translateX(-10px) rotate(180deg);
    }
    75% {
      transform: translateY(-15px) translateX(-2px) rotate(270deg);
    }
    100% {
      transform: translateY(0px) translateX(0px) rotate(360deg);
    }
  }

  @keyframes parallaxMedium {
    0% {
      transform: translateY(0px) translateX(0px) scale(1);
    }
    33% {
      transform: translateY(-15px) translateX(8px) scale(1.1);
    }
    66% {
      transform: translateY(-8px) translateX(-12px) scale(0.9);
    }
    100% {
      transform: translateY(0px) translateX(0px) scale(1);
    }
  }

  @keyframes parallaxFast {
    0% {
      transform: translateY(0px) translateX(0px) rotate(0deg) scale(1);
    }
    20% {
      transform: translateY(-20px) translateX(10px) rotate(72deg) scale(1.2);
    }
    40% {
      transform: translateY(-5px) translateX(-15px) rotate(144deg) scale(0.8);
    }
    60% {
      transform: translateY(-25px) translateX(5px) rotate(216deg) scale(1.1);
    }
    80% {
      transform: translateY(-10px) translateX(-8px) rotate(288deg) scale(0.9);
    }
    100% {
      transform: translateY(0px) translateX(0px) rotate(360deg) scale(1);
    }
  }
}
@media (prefers-reduced-motion: no-preference) {
  .hero-shapes {
    animation: parallaxFloat 20s linear infinite;
  }

  @keyframes parallaxFloat {
    0% {
      transform: translateY(0px);
    }
    100% {
      transform: translateY(-20px);
    }
  }
}

/* Responsive Design Enhancements */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
    text-align: center;
  }

  .hero-title {
    font-size: var(--text-5xl);
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .testimonials-grid {
    width: 100%;
    animation: none;
    display: grid;
    grid-template-columns: 1fr;
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }

  .nav-content {
    height: 70px;
  }

  .hero {
    padding-top: 70px;
  }

  .mobile-menu {
    top: 70px;
  }

  .hero-title {
    font-size: var(--text-4xl);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
  }

  .hero-stats {
    justify-content: center;
    gap: var(--space-6);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .features-grid,
  .pricing-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--text-3xl);
  }

  .hero-description {
    font-size: var(--text-lg);
  }

  .btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
  }

  .stat-number {
    font-size: var(--text-2xl);
  }

  .price-amount {
    font-size: var(--text-4xl);
  }
}

/* Advanced Floating Particles System */
.floating-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.floating-particles::before,
.floating-particles::after {
  content: "";
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--accent-primary);
  border-radius: 50%;
  animation: floatParticles 15s linear infinite;
}

.floating-particles::before {
  top: -10%;
  left: 10%;
  animation-delay: -2s;
}

.floating-particles::after {
  top: -10%;
  left: 80%;
  animation-delay: -8s;
  background: var(--accent-secondary);
}

@keyframes floatParticles {
  0% {
    transform: translateY(0) translateX(0) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
    transform: translateY(10vh) translateX(-10px) scale(1);
  }
  90% {
    opacity: 1;
    transform: translateY(90vh) translateX(10px) scale(1);
  }
  100% {
    transform: translateY(100vh) translateX(0) scale(0);
    opacity: 0;
  }
}

/* Enhanced Scroll-Based Animations */
@media (prefers-reduced-motion: no-preference) {
  .feature-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25),
      0 0 30px rgba(37, 99, 235, 0.2);
  }

  .pricing-card:hover {
    transform: translateY(-12px) rotateY(5deg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3),
      0 0 40px rgba(124, 58, 237, 0.25);
  }
}

/* CPU-Efficient Performance Optimizations */
* {
  will-change: auto;
}

.hero-shapes *,
.morphing-bg *,
.floating-particles *,
.features::before,
.features::after {
  will-change: transform, opacity;
  transform-style: preserve-3d;
}

/* Final Hackathon Polish */
body {
  font-optical-sizing: auto;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}