/* Top navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--color-void-black);
  border-bottom: 1px solid var(--color-graphite);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-16);
  height: 100%;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-12);
  text-decoration: none;
  color: var(--color-chalk);
}

.wordmark:hover {
  color: var(--color-chalk);
}

.wordmark__tile {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: var(--radius-logotiles);
  background: var(--color-signal-lime);
  box-shadow: var(--shadow-sm);
  color: var(--color-void-black);
  font-family: var(--font-pt-serif);
  font-weight: var(--font-weight-light);
  font-size: 18px;
  line-height: 28px;
  text-align: center;
}

.wordmark__text {
  font-family: var(--font-pt-serif);
  font-weight: var(--font-weight-light);
  font-size: var(--text-subheading);
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-32);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--spacing-32);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--color-chalk);
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--color-signal-lime);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-graphite);
  border-radius: var(--radius-buttons);
  background: transparent;
  color: var(--color-chalk);
  cursor: pointer;
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  padding: 14px 24px;
  border-radius: var(--radius-buttons);
  font-family: var(--font-inter-tight);
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: box-shadow 160ms ease, background-color 160ms ease, color 160ms ease;
}

.btn--primary {
  background: var(--color-signal-lime);
  color: var(--color-void-black);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  color: var(--color-void-black);
  box-shadow: rgba(197, 255, 74, 0.65) 0 0 14px 0;
}

.btn--outline {
  background: transparent;
  border-color: var(--color-signal-lime);
  color: var(--color-signal-lime);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: var(--shadow-sm);
}

.btn--outline:hover {
  background: rgba(197, 255, 74, 0.08);
  color: var(--color-signal-lime);
}

.btn--nav {
  padding: 10px 20px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-16);
  margin-top: var(--spacing-28);
}

/* Cards */
.card {
  background: var(--surface-card);
  border: 1px solid var(--color-graphite);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
}

.card__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-16);
  margin-bottom: var(--spacing-20);
}

.card__title {
  margin: 0 0 var(--spacing-16);
  font-family: var(--font-pt-serif);
  font-weight: var(--font-weight-light);
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.05;
  color: var(--color-chalk);
}

.card__body {
  margin: 0;
  color: var(--color-bone);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-20);
}

.card-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* Code panel */
.code-panel {
  margin-top: var(--spacing-24);
  background: var(--surface-raised);
  border: 1px solid var(--color-iron);
  border-radius: var(--radius-buttons);
  padding: var(--spacing-24);
}

.code-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-12);
  margin-bottom: var(--spacing-16);
}

.code-panel pre {
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-jetbrains-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-bone);
}

.code-panel .tok {
  color: var(--color-signal-lime);
}

/* Status pill */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--color-signal-lime);
  border-radius: var(--radius-pill);
  color: var(--color-signal-lime);
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Neon divider — one per page */
.neon-divider {
  height: 7px;
  width: 100%;
  background: var(--color-signal-lime);
  border: 0;
  margin: 0;
}

/* Ethics strip */
.ethics-strip {
  border-top: 1px solid var(--color-graphite);
  border-bottom: 1px solid var(--color-graphite);
  padding-block: var(--spacing-28);
}

.ethics-strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-20);
}

.ethics-strip p {
  margin: 0;
  max-width: 52rem;
  color: var(--color-smoke);
}

.ethics-strip a {
  color: var(--color-signal-lime);
  text-decoration: none;
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-graphite);
  padding-block: var(--spacing-32);
  background: var(--color-void-black);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-16);
}

.site-footer p {
  margin: 0;
  color: var(--color-ash);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.site-footer a {
  color: var(--color-pearl);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer a:hover {
  color: var(--color-signal-lime);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-20);
}

/* Steps / table */
.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--spacing-16);
}

.steps li {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--spacing-20);
  padding: var(--spacing-24);
  background: var(--surface-card);
  border: 1px solid var(--color-graphite);
}

.steps__num {
  font-family: var(--font-jetbrains-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-signal-lime);
}

.steps h3 {
  margin: 0 0 var(--spacing-8);
  font-family: var(--font-pt-serif);
  font-weight: var(--font-weight-light);
  font-size: var(--text-subheading);
  color: var(--color-chalk);
}

.steps p {
  margin: 0;
  color: var(--color-bone);
}

.perm-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-24);
}

.perm-table th,
.perm-table td {
  padding: var(--spacing-14) var(--spacing-16);
  border: 1px solid var(--color-slate);
  text-align: left;
  vertical-align: top;
}

.perm-table th {
  background: var(--surface-raised);
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ash);
}

.perm-table td {
  background: var(--surface-card);
  color: var(--color-bone);
}

.perm-table code {
  font-family: var(--font-jetbrains-mono);
  font-size: 12px;
  color: var(--color-signal-lime);
}

@media (max-width: 900px) {
  .card-grid,
  .card-grid--3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .nav-toggle {
    display: inline-block;
  }

  .nav {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-16);
    background: var(--color-void-black);
    border-bottom: 1px solid var(--color-graphite);
  }

  .nav.is-open {
    display: flex;
  }

  .nav__links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-16);
    margin-bottom: var(--spacing-16);
  }

  .site-header {
    position: sticky;
  }

  .site-header__inner {
    position: relative;
  }
}