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

:root {
  --primary-dark: #0a0e27;
  --secondary-dark: #1a1f3a;
  --accent-yellow: #ffed4e;
  --accent-pink: #ff006e;
  --accent-cyan: #00d9ff;
  --accent-green: #39ff14;
  --accent-orange: #ff6b35;
  --text-light: #ffffff;
  --text-muted: #b0b0b0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--primary-dark);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header & Navigation */
header {
  background-color: var(--secondary-dark);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--accent-yellow);
  box-shadow: 0 0 20px rgba(255, 237, 78, 0.1);
}

.navbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-pink), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  font-size: 2rem;
}

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

nav a {
  color: var(--text-light);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: color 0.3s ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-yellow), var(--accent-pink));
  transition: width 0.3s ease;
}

nav a:hover {
  color: var(--accent-yellow);
}

nav a:hover::after {
  width: 100%;
}

.cta-button {
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-orange));
  color: var(--primary-dark);
  padding: 0.7rem 1.5rem;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  display: inline-block;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 237, 78, 0.3);
}

/* Hero Section */
.hero {
  margin-top: 80px;
  min-height: 600px;
  background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 237, 78, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 0, 110, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-text h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-pink), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.hero-image {
  position: relative;
  z-index: 3;
}

.hero-image img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(255, 237, 78, 0.2);
  border: 2px solid var(--accent-yellow);
}

/* Sections */
section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  text-align: center;
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Mistakes Grid */
.mistakes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.mistake-card {
  background: linear-gradient(135deg, rgba(26, 31, 58, 0.8), rgba(26, 31, 58, 0.5));
  border: 2px solid var(--accent-cyan);
  border-radius: 10px;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.mistake-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 237, 78, 0.1), rgba(255, 0, 110, 0.1));
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.mistake-card:hover {
  border-color: var(--accent-yellow);
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(255, 237, 78, 0.2);
}

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

.mistake-card h3 {
  color: var(--accent-yellow);
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.mistake-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.mistake-card .badge {
  display: inline-block;
  background: var(--accent-pink);
  color: var(--primary-dark);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: bold;
}

/* Features Section */
.features-section {
  background: linear-gradient(135deg, var(--secondary-dark), var(--primary-dark));
}

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

.feature-box {
  text-align: center;
  padding: 2rem;
  border-radius: 10px;
  background: rgba(255, 237, 78, 0.05);
  border: 1px solid var(--accent-green);
  transition: all 0.3s ease;
}

.feature-box:hover {
  background: rgba(255, 237, 78, 0.1);
  transform: scale(1.05);
  box-shadow: 0 10px 30px rgba(57, 255, 20, 0.2);
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.feature-box h3 {
  color: var(--accent-green);
  margin-bottom: 1rem;
}

/* Contact Form */
.contact-section {
  background: linear-gradient(135deg, var(--secondary-dark), var(--primary-dark));
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(26, 31, 58, 0.8);
  padding: 2rem;
  border-radius: 10px;
  border: 2px solid var(--accent-pink);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent-cyan);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  background: rgba(10, 14, 39, 0.8);
  border: 1px solid var(--accent-cyan);
  border-radius: 5px;
  color: var(--text-light);
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-yellow);
  box-shadow: 0 0 10px rgba(255, 237, 78, 0.3);
  background: rgba(10, 14, 39, 0.95);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-orange));
  color: var(--primary-dark);
  border: none;
  border-radius: 5px;
  font-weight: bold;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.form-submit:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 237, 78, 0.3);
}

.form-submit:active {
  transform: translateY(-1px);
}

.form-message {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 5px;
  text-align: center;
  display: none;
}

.form-message.success {
  background: rgba(57, 255, 20, 0.2);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
  display: block;
}

.form-message.error {
  background: rgba(255, 0, 110, 0.2);
  color: var(--accent-pink);
  border: 1px solid var(--accent-pink);
  display: block;
}

/* Image Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.gallery-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  border: 2px solid var(--accent-orange);
  transition: all 0.3s ease;
}

.gallery-item img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gallery-item:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(255, 107, 53, 0.3);
}

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

/* Footer */
footer {
  background-color: var(--secondary-dark);
  border-top: 2px solid var(--accent-yellow);
  padding: 3rem 2rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--accent-yellow);
  margin-bottom: 1rem;
}

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

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

.footer-section a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--accent-cyan);
  color: var(--text-muted);
}

.footer-bottom a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom a:hover {
  color: var(--accent-yellow);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-text h1 {
    font-size: 2rem;
  }

  nav ul {
    gap: 1rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

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

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

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 10px rgba(255, 237, 78, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(255, 237, 78, 0.6);
  }
}

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