:root {
  --background: #000000;
  --foreground: #ffffff;
  --accent: #22d3ee; /* cyan-400 */
  --secondary: #94a3b8; /* slate-400 */
  --border: #1e293b;
  --card-bg: #0a0a0a;
  --font-mono: 'JetBrains Mono', 'Courier New', Courier, monospace;
}

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

body {
  background-color: var(--background);
  color: var(--foreground);
  font-family: var(--font-mono);
  line-height: 1.6;
  background-image: 
    linear-gradient(rgba(34, 211, 238, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.navbar {
  border-bottom: 1px solid var(--border);
  height: 70px;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.brand {
  color: var(--accent);
  font-weight: bold;
  font-size: 1.2rem;
  text-decoration: none;
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.3);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-link {
  color: var(--secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
  text-transform: uppercase;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

main {
  padding-top: 4rem;
  padding-bottom: 6rem;
}

.loading {
  text-align: center;
  font-size: 1.2rem;
  color: var(--accent);
  padding: 5rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2px;
}

.cursor {
  width: 10px;
  height: 1.2rem;
  background-color: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  from, to { opacity: 1; }
  50% { opacity: 0; }
}

/* Home Section */
.hero {
  text-align: center;
  padding: 4rem 0;
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
  letter-spacing: -2px;
}

.hero p {
  color: var(--secondary);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.5rem;
  margin-bottom: 2rem;
}

.section-title::before {
  content: "#";
  color: var(--accent);
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.card-category {
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.card-date {
  font-size: 0.85rem;
  color: var(--secondary);
  margin-top: auto;
}

/* Writeup Content (Marked Output) */
.writeup-header {
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.writeup-header p {
  color: var(--secondary);
  font-size: 0.9rem;
  margin-top: 1rem;
}

#writeup-content {
  max-width: 800px;
  margin: 0 auto;
}

.prose h1, .prose h2, .prose h3 {
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--foreground);
}

.prose p {
  margin-bottom: 1.5rem;
}

.prose blockquote {
  border-left: 4px solid var(--accent);
  padding-left: 1.5rem;
  color: var(--secondary);
  font-style: italic;
  margin: 2rem 0;
}

.prose pre {
  margin: 2rem 0;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.prose img {
  max-width: 100%;
  border-radius: 8px;
  margin: 2rem 0;
  border: 1px solid var(--border);
}

.terminal-footer {
  text-align: center;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  color: var(--secondary);
  font-size: 0.8rem;
  opacity: 0.5;
}

.cyber-menu-toggle {
  display: none !important;
  background: none !important;
  border: none !important;
  cursor: pointer !important;
  padding: 0.5rem !important;
  z-index: 1001 !important;
  box-shadow: none !important;
  appearance: none !important;
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .navbar {
    height: 60px;
  }

  .cyber-menu-toggle {
    display: block !important;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: var(--background);
    border-left: 1px solid var(--border);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: right 0.3s ease-in-out;
    z-index: 1000;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-link {
    font-size: 1.2rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.2rem;
  }

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

  .writeup-header h1 {
    font-size: 2rem;
  }

  .prose pre {
    padding: 1rem;
    font-size: 0.8rem;
  }
}