:root {
  --primary: #0d1b2a;
  --secondary: #1b263b;
  --accent: #00ced1;
  --highlight: #ff8c00;
  --text: #dbe2ef;
  --light: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap');

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

body {
  background: linear-gradient(135deg, var(--primary) 0%, #0a1120 100%);
  color: var(--text);
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  padding-top: 80px;
}

.header-notice {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: var(--highlight);
  color: var(--primary);
  text-align: center;
  padding: 10px;
  font-weight: 700;
  z-index: 1100;
  box-shadow: var(--shadow);
}

.navbar {
  position: fixed;
  top: 40px;
  width: 100%;
  background: rgba(27, 38, 59, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem 5%;
  z-index: 1000;
  box-shadow: var(--shadow);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.nav-links a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--highlight);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--highlight);
  transition: var(--transition);
  transform: translateX(-50%);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 4rem;
  padding: 3rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(90deg, var(--highlight), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.hero-image img:hover {
  transform: translateY(-10px);
}

article {
  background: rgba(27, 38, 59, 0.5);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 3rem;
  margin-bottom: 3rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

article h2 {
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  color: var(--highlight);
  position: relative;
  padding-bottom: 0.5rem;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--highlight), var(--accent));
  border-radius: 3px;
}

article p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

pre {
  background: rgba(13, 27, 42, 0.8);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  border-left: 4px solid var(--highlight);
  box-shadow: var(--shadow);
}

code {
  font-family: 'Roboto Mono', monospace;
  color: var(--accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: rgba(27, 38, 59, 0.7);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: var(--transition);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  border-color: var(--highlight);
}

.card img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  aspect-ratio: 1/1;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  article {
    padding: 2rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
}

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

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

/* Utility Classes */
.text-accent {
  color: var(--accent);
}

.text-highlight {
  color: var(--highlight);
}

.bg-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}