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

:root {
  --background: 0 0% 100%;
  --foreground: 222 47% 11%;
  --card: 0 0% 100%;
  --card-foreground: 222 47% 11%;
  --primary: 217 91% 60%;
  --primary-foreground: 0 0% 100%;
  --primary-glow: 217 91% 70%;
  --secondary: 142 76% 36%;
  --secondary-foreground: 0 0% 100%;
  --muted: 210 40% 96%;
  --muted-foreground: 215 16% 47%;
  --accent: 38 92% 50%;
  --accent-foreground: 0 0% 100%;
  --border: 214 32% 91%;
  --shadow-glow: 0 8px 32px -8px hsl(217 91% 60% / 0.3);
  --shadow-elevated: 0 20px 60px -12px hsl(222 47% 11% / 0.12);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.dark {
  --background: 222 47% 7%;
  --foreground: 210 40% 98%;
  --card: 222 47% 11%;
  --card-foreground: 210 40% 98%;
  --primary: 217 91% 60%;
  --primary-foreground: 0 0% 100%;
  --primary-glow: 217 91% 70%;
  --secondary: 142 76% 36%;
  --secondary-foreground: 0 0% 100%;
  --muted: 217 33% 17%;
  --muted-foreground: 215 20% 65%;
  --accent: 38 92% 50%;
  --accent-foreground: 0 0% 100%;
  --border: 217 33% 17%;
  --shadow-glow: 0 8px 32px -8px hsl(217 91% 60% / 0.5);
  --shadow-elevated: 0 20px 60px -12px hsl(0 0% 0% / 0.3);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  line-height: 1.6;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Navbar Styles */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition-smooth);
  animation: slideDown 0.5s ease-out;
}

.navbar.scrolled {
  background: hsl(var(--background) / 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 12px hsl(var(--foreground) / 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: hsl(var(--foreground));
  animation: bounceIn 0.8s ease-out;
}

.logo-icon {
  padding: 0.5rem;
  border-radius: 12px;
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--secondary)));
  transition: var(--transition-smooth);
  animation: rotate3d 3s ease-in-out infinite;
}

.logo:hover .logo-icon {
  transform: scale(1.1) rotate(15deg);
  box-shadow: var(--shadow-glow);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(135deg, hsl(var(--primary)) 0%, hsl(var(--primary-glow)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links li {
  animation: fadeInUp 0.5s ease-out backwards;
}

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

.nav-links a {
  position: relative;
  text-decoration: none;
  color: hsl(var(--foreground) / 0.8);
  font-weight: 500;
  font-size: 0.875rem;
  transition: var(--transition-smooth);
}

.nav-links a::before {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(to right, hsl(var(--primary)), hsl(var(--secondary)));
  transform: translateX(-50%);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-links a:hover::before,
.nav-links a.active::before {
  width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
  color: hsl(var(--primary));
  transform: translateY(-2px);
}

.theme-toggle,
.mobile-menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  color: hsl(var(--foreground));
  transition: var(--transition-smooth);
  animation: pulse 2s ease-in-out infinite;
}

.theme-toggle:hover,
.mobile-menu-btn:hover {
  background: hsl(var(--muted));
  box-shadow: var(--shadow-glow);
  transform: rotate(15deg) scale(1.1);
  animation: none;
}

.mobile-menu-btn {
  display: none;
}

.mobile-menu {
  display: none;
  padding: 1rem 0;
  animation: slideDown 0.3s ease-out;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 0.75rem 1rem;
  text-decoration: none;
  color: hsl(var(--foreground));
  border-radius: 8px;
  margin-bottom: 0.5rem;
  transition: var(--transition-smooth);
  animation: slideInLeft 0.4s ease-out backwards;
}

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

.mobile-menu a:hover,
.mobile-menu a.active {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  transform: translateX(10px);
}

/* Card Styles */
.card {
  background: hsl(var(--card));
  border: 1px solid hsl(var(--border));
  border-radius: 12px;
  padding: 2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, hsl(var(--primary) / 0.03), hsl(var(--secondary) / 0.03));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-elevated);
  border-color: hsl(var(--primary) / 0.3);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn svg {
  transition: transform 0.3s ease;
}

.btn:hover svg {
  transform: translateX(5px);
}

.btn-primary {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  box-shadow: 0 4px 12px hsl(var(--primary) / 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 24px hsl(var(--primary) / 0.4);
  transform: translateY(-2px) scale(1.05);
}

.btn-secondary {
  background: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
  box-shadow: 0 4px 12px hsl(var(--secondary) / 0.3);
}

.btn-secondary:hover {
  box-shadow: 0 8px 24px hsl(var(--secondary) / 0.4);
  transform: translateY(-2px) scale(1.05);
}

.btn-outline {
  background: transparent;
  color: hsl(var(--foreground));
  border: 1px solid hsl(var(--border));
}

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, hsl(var(--primary)) 0%, hsl(var(--primary-glow)) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 3s ease-in-out infinite;
  background-size: 200% 200%;
}

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

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

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

@keyframes rotate3d {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-5deg);
  }
  75% {
    transform: rotate(5deg);
  }
}

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

@keyframes wiggle {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(-3deg);
  }
  75% {
    transform: rotate(3deg);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes heartBeat {
  0%, 100% {
    transform: scale(1);
  }
  10%, 30% {
    transform: scale(0.9);
  }
  20%, 40%, 60%, 80% {
    transform: scale(1.1);
  }
  50%, 70% {
    transform: scale(1.05);
  }
}

@keyframes swing {
  20% {
    transform: rotate(15deg);
  }
  40% {
    transform: rotate(-10deg);
  }
  60% {
    transform: rotate(5deg);
  }
  80% {
    transform: rotate(-5deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

@keyframes wobble {
  0%, 100% {
    transform: translateX(0);
  }
  15% {
    transform: translateX(-10px) rotate(-5deg);
  }
  30% {
    transform: translateX(8px) rotate(3deg);
  }
  45% {
    transform: translateX(-8px) rotate(-3deg);
  }
  60% {
    transform: translateX(5px) rotate(2deg);
  }
  75% {
    transform: translateX(-3px) rotate(-1deg);
  }
}

@keyframes flip {
  from {
    transform: perspective(400px) rotateY(0);
  }
  to {
    transform: perspective(400px) rotateY(360deg);
  }
}

@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-fade-in {
  animation: fadeIn 0.8s ease-out;
}

.animate-slide-up {
  animation: slideUp 0.8s ease-out;
}

.animate-slide-down {
  animation: slideDown 0.8s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.8s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.8s ease-out;
}

.animate-bounce-in {
  animation: bounceIn 1s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-wiggle {
  animation: wiggle 1s ease-in-out;
}

.animate-scale-in {
  animation: scaleIn 0.5s ease-out;
}

.animate-heart-beat {
  animation: heartBeat 1.3s ease-in-out infinite;
}

.animate-swing {
  animation: swing 1s ease-in-out;
}

.animate-wobble {
  animation: wobble 1s ease-in-out;
}

.animate-flip {
  animation: flip 1s ease-in-out;
}

.animate-zoom-in {
  animation: zoomIn 0.6s ease-out;
}

/* Footer Styles */
.footer {
  background: hsl(var(--card));
  border-top: 1px solid hsl(var(--border));
  margin-top: 5rem;
  padding: 3rem 0;
  animation: fadeInUp 0.8s ease-out;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-grid > div {
  animation: slideInLeft 0.8s ease-out backwards;
}

.footer-grid > div:nth-child(1) { animation-delay: 0.1s; }
.footer-grid > div:nth-child(2) { animation-delay: 0.2s; }
.footer-grid > div:nth-child(3) { animation-delay: 0.3s; }
.footer-grid > div:nth-child(4) { animation-delay: 0.4s; }

.footer h3 {
  font-size: 1.125rem;
  margin-bottom: 1rem;
}

.footer ul {
  list-style: none;
}

.footer li {
  margin-bottom: 0.5rem;
  transition: var(--transition-smooth);
}

.footer li:hover {
  transform: translateX(5px);
}

.footer a {
  color: hsl(var(--muted-foreground));
  text-decoration: none;
  font-size: 0.875rem;
  transition: var(--transition-smooth);
  position: relative;
}

.footer a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: hsl(var(--primary));
  transition: width 0.3s ease;
}

.footer a:hover::after {
  width: 100%;
}

.footer a:hover {
  color: hsl(var(--primary));
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid hsl(var(--border));
  color: hsl(var(--muted-foreground));
  font-size: 0.875rem;
  animation: fadeIn 1s ease-out 0.5s backwards;
}

.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: hsl(var(--muted));
  transition: var(--transition-smooth);
  animation: bounceIn 0.8s ease-out backwards;
}

.social-links a:nth-child(1) { animation-delay: 0.1s; }
.social-links a:nth-child(2) { animation-delay: 0.2s; }
.social-links a:nth-child(3) { animation-delay: 0.3s; }

.social-links a:hover {
  background: hsl(var(--primary));
  color: hsl(var(--primary-foreground));
  transform: translateY(-6px) rotate(15deg) scale(1.2);
  box-shadow: var(--shadow-glow);
}

/* Form Styles */
.form-group {
  margin-bottom: 1.5rem;
  animation: slideInLeft 0.6s ease-out backwards;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid hsl(var(--border));
  border-radius: 8px;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: inherit;
  font-size: 0.875rem;
  transition: var(--transition-smooth);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: hsl(var(--primary));
  box-shadow: 0 0 0 3px hsl(var(--primary) / 0.1);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* Icons (Using Unicode symbols) */
.icon {
  width: 20px;
  height: 20px;
  display: inline-block;
}