:root {
  --bg-color: #020408;
  --panel-bg: #050b14;
  --accent-red: #ff1e42;
  --terminal-green: #00ff66;
  --matrix-dim: rgba(0, 255, 102, 0.2);
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --border-color: #0d1b2a;
  --cyber-glow: 0 0 15px rgba(255, 30, 66, 0.3);
  --matrix-glow: 0 0 12px rgba(0, 255, 102, 0.2);
}

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

body {
  font-family: 'Courier New', Courier, monospace;
  background-color: var(--bg-color);
  background-image: 
    linear-gradient(rgba(2, 4, 8, 0.95), rgba(2, 4, 8, 0.95)),
    repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 255, 102, 0.02) 2px, rgba(0, 255, 102, 0.02) 4px);
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  background: var(--panel-bg);
  border-bottom: 2px solid var(--accent-red);
  box-shadow: var(--cyber-glow);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--accent-red);
  text-decoration: none;
  letter-spacing: 2px;
  text-shadow: 0 0 8px rgba(255, 30, 66, 0.6);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s;
}

nav a:hover, nav a.active {
  color: var(--terminal-green);
  text-shadow: 0 0 8px rgba(0, 255, 102, 0.5);
}

main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1rem;
}

/* Cyberpunk Matrix Terminal Cards */
.card {
  background: var(--panel-bg);
  border: 1px solid var(--terminal-green);
  border-left: 5px solid var(--terminal-green);
  border-radius: 0px;
  padding: 2rem;
  margin-bottom: 1.8rem;
  box-shadow: var(--matrix-glow), inset 0 0 20px rgba(0, 255, 102, 0.03);
  position: relative;
}

/* Adds a tech classification header tag to every card */
.card::before {
  content: "// SECURE_DATA_NODE //";
  display: block;
  font-size: 0.7rem;
  color: var(--terminal-green);
  letter-spacing: 2px;
  margin-bottom: 1rem;
  opacity: 0.8;
  text-transform: uppercase;
}

h1, h2 {
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

h1 {
  border-bottom: 1px dashed var(--accent-red);
  padding-bottom: 0.5rem;
}

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

.inline-link {
  color: var(--terminal-green);
  text-decoration: underline;
  font-weight: 500;
}

.page-navigation {
  display: flex;
  justify-content: space-between;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
}

.nav-btn {
  background: var(--border-color);
  color: var(--text-main);
  padding: 0.6rem 1.2rem;
  border-radius: 0px;
  text-decoration: none;
  font-weight: bold;
  font-size: 0.9rem;
  transition: all 0.2s;
  border: 1px solid var(--terminal-green);
}

.nav-btn:hover {
  background: var(--terminal-green);
  color: #020408;
  box-shadow: var(--matrix-glow);
}

footer {
  text-align: center;
  padding: 1.5rem;
  background: var(--panel-bg);
  border-top: 2px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

@media (max-width: 600px) {
  header {
    flex-direction: column;
    align-items: flex-start;
  }
  nav ul {
    gap: 0.8rem;
  }
  .card {
    padding: 1.2rem;
  }
}