/* =====================================================
   NAVIGATION
===================================================== */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-top);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem var(--space-lg);
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: var(--border);
  transition: background var(--transition-base);
}

.site-nav.scrolled {
  background: rgba(10, 10, 10, 0.98);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-logo .prompt {
  color: var(--accent);
}

.nav-logo .cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--accent);
  animation: blink 1s step-end infinite;
  margin-left: 2px;
  vertical-align: middle;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition-base);
}

.nav-links a:hover {
  color: var(--accent);
  opacity: 1;
}

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

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  border: var(--border-accent);
  padding: 0.4rem 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  background: var(--accent);
  color: var(--bg-root);
  opacity: 1;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--text-primary);
  transition: all var(--transition-base);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-cta { display: none; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-root);
    border-bottom: var(--border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }
}

/* =====================================================
   HERO SECTION
===================================================== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-root);
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--bg-border) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.35;
  pointer-events: none;
}

/* Gradient fade top-left */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse at top left, rgba(57, 255, 20, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--space-2xl) var(--space-lg) var(--space-2xl) calc(var(--space-lg) + 2rem);
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fade-up 0.5s ease 0.2s forwards;
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse-dot 2s infinite;
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 9vw, 7.5rem);
  line-height: 0.95;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  opacity: 0;
  animation: fade-up 0.6s ease 0.35s forwards;
}

.hero-headline .accent-line {
  color: var(--accent);
  display: block;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: fade-up 0.6s ease 0.5s forwards;
}

.hero-ctas {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-up 0.6s ease 0.65s forwards;
}

.hero-meta {
  margin-top: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  animation: fade-up 0.5s ease 0.85s forwards;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.hero-meta-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--text-primary);
  line-height: 1;
}

.hero-meta-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-meta-divider {
  width: 1px;
  height: 40px;
  background: var(--bg-border-bright);
}

/* =====================================================
   TERMINAL BLOCK
===================================================== */
.hero-terminal {
  position: relative;
  z-index: 2;
  padding: var(--space-2xl) var(--space-lg) var(--space-2xl) 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  opacity: 0;
  animation: fade-up 0.7s ease 0.5s forwards;
}

.terminal-window {
  width: 100%;
  max-width: 520px;
  background: var(--bg-surface);
  border: var(--border-bright);
  position: relative;
  box-shadow:
    0 0 0 1px var(--bg-border),
    0 24px 80px rgba(0, 0, 0, 0.6),
    0 0 80px rgba(57, 255, 20, 0.05);
}

.terminal-titlebar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.6rem 1rem;
  border-bottom: var(--border);
  background: var(--bg-surface-2);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.tdot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.tdot--red { background: #FF5F57; }
.tdot--yellow { background: #FEBC2E; }
.tdot--green { background: #28C840; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-left: auto;
  margin-right: auto;
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.8;
  min-height: 280px;
}

.terminal-line {
  display: block;
  white-space: pre-wrap;
  word-break: break-all;
}

.terminal-line .prompt-user {
  color: var(--accent);
}

.terminal-line .prompt-at {
  color: var(--text-muted);
}

.terminal-line .prompt-host {
  color: var(--accent-warm);
}

.terminal-line .prompt-dir {
  color: #4A9EFF;
}

.terminal-line .cmd {
  color: var(--text-primary);
}

.terminal-line .output {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.terminal-line .output.success {
  color: var(--accent);
}

.terminal-line .output.error {
  color: #FF5F57;
}

.terminal-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
  margin-left: 2px;
}

/* Network topology SVG area */
.hero-topology {
  margin-top: var(--space-lg);
  width: 100%;
  max-width: 520px;
  height: 100px;
  position: relative;
  opacity: 0;
  animation: fade-up 0.6s ease 1s forwards;
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .hero-terminal {
    padding: 0 var(--space-lg) var(--space-2xl);
    align-items: center;
  }
  .terminal-window {
    max-width: 100%;
  }
  .hero-content {
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
  }
  .hero-topology {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero {
    padding-top: 70px;
  }
  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-meta {
    flex-wrap: wrap;
  }
}