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

:root {
  --primary-dark: #192A56;
  --primary-mid: #3A0CA3;
  --secondary-dark: #0F2027;
  --secondary-mid: #370617;
  --accent-blue: #4CC9F0;
  --accent-orange: #FFA500;
  --text-light: rgba(255,255,255,0.9);
  --text-muted: rgba(255,255,255,0.7);
  --bg-gradient: linear-gradient(135deg, var(--primary-mid), var(--primary-dark));
  --module-bg: rgba(255,255,255,0.08);
  --border-radius: 12px;
  --box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Roboto', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-light);
  line-height: 1.7;
  min-height: 100%;
  padding: 0;
  overflow-x: hidden;
}

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

.header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.header::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-orange));
  margin: 1.5rem auto;
  border-radius: 2px;
}

h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.3;
}

h1 {
  font-size: 2.5rem;
  color: white;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

h2 {
  font-size: 2rem;
  color: var(--accent-orange);
  position: relative;
  padding-bottom: 0.5rem;
}

h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--accent-blue);
  border-radius: 3px;
}

h3 {
  font-size: 1.5rem;
  color: var(--accent-blue);
  margin-top: 2rem;
}

p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: var(--transition);
}

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

.module {
  background: var(--module-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--box-shadow);
  border: 1px solid rgba(255,255,255,0.1);
  transition: var(--transition);
}

.module:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

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

.card {
  background: var(--module-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--box-shadow);
}

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

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid var(--accent-blue);
}

.card-content {
  padding: 1.5rem;
}

.tag {
  display: inline-block;
  background: rgba(76, 201, 240, 0.2);
  color: var(--accent-blue);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.8rem;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
}

pre {
  background: rgba(0,0,0,0.3);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin: 2rem 0;
  overflow-x: auto;
  border-left: 4px solid var(--accent-blue);
  font-family: 'Roboto Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

code {
  font-family: 'Roboto Mono', monospace;
  background: rgba(0,0,0,0.3);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9rem;
}

.notice {
  background: rgba(255,165,0,0.1);
  border-left: 4px solid var(--accent-orange);
  padding: 1rem;
  margin: 2rem 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 4rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
}

/* Navigation */
.nav {
  display: flex;
  justify-content: center;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.nav-item {
  margin: 0 1rem;
  position: relative;
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: var(--transition);
}

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

/* Decorative elements */
.decor-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  margin: 2rem 0;
}

.circle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-blue), transparent 70%);
  opacity: 0.3;
  z-index: -1;
}

.circle-1 {
  width: 300px;
  height: 300px;
  top: -100px;
  right: -100px;
}

.circle-2 {
  width: 200px;
  height: 200px;
  bottom: -50px;
  left: -50px;
}