/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent-1);
  color: var(--bg-primary);
}
.btn-primary:hover {
  background: var(--accent-1-dim);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}
.btn-secondary {
  background: transparent;
  color: var(--fg-primary);
  border-color: var(--border-strong);
}
.btn-secondary:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
}
.btn-link {
  color: var(--accent-1);
  padding: 0;
  background: none;
  border: none;
  font-weight: 500;
}
.btn-link:hover .arrow { transform: translateX(3px); }
.arrow { transition: transform var(--duration-fast) var(--ease-out); display: inline-block; }

/* ========================================
   Nav
   ======================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in oklab, var(--bg-primary) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  max-width: var(--container-wide);
  margin: 0 auto;
}
.site-nav-logo {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg-primary);
}
.site-nav-logo:hover { color: var(--accent-1); }
.site-nav-links { display: flex; gap: var(--space-6); align-items: center; }
.site-nav-links a {
  color: var(--fg-secondary);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out);
}
.site-nav-links a:hover { color: var(--fg-primary); }
.site-nav-links a.active { color: var(--accent-1); }
/* Primary CTA button in the nav: restore the dark-on-lime contrast
   that .site-nav-links a would otherwise wash out. */
.site-nav-links a.btn-primary,
.site-nav-links a.btn-primary:hover,
.site-nav-links a.btn-primary:focus {
  color: var(--bg-primary);
  font-weight: 600;
}
.site-nav-links a.btn-secondary {
  color: var(--fg-primary);
}

/* Mobile nav */
.site-nav-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--fg-primary);
}
@media (max-width: 820px) {
  .site-nav-links { display: none; }
  .site-nav-toggle { display: block; }
  .site-nav-links.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-secondary);
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    gap: var(--space-4);
  }
}

/* ========================================
   Mega menu (What We Do)
   ======================================== */
.site-nav { position: relative; }
.nav-item { position: relative; display: flex; align-items: center; }
.nav-link {
  background: transparent; border: 0; padding: 0; margin: 0;
  font: inherit; color: var(--fg-secondary);
  cursor: pointer; display: inline-flex; align-items: center; gap: 0.3em;
}
.nav-link:hover, .nav-link[aria-expanded="true"] { color: var(--fg-primary); }
.nav-caret { font-size: 0.75em; transition: transform 150ms ease; }
.nav-mega-trigger[aria-expanded="true"] .nav-caret { transform: rotate(180deg); }

.nav-mega {
  position: fixed;
  left: 0; right: 0;
  top: var(--nav-height, 68px);
  background: var(--bg-elevated, #0f0f11);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 24px 48px rgba(0,0,0,0.4);
  padding: 1.75rem 0 1.25rem;
  z-index: 90;
}
.nav-mega[hidden] { display: none; }
.nav-mega-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.nav-mega-col { display: flex; flex-direction: column; gap: 0.75rem; }
.nav-mega-label {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 0.72rem; letter-spacing: 0.02em;
  color: var(--accent-1, #f6d538);
}
.nav-mega-link {
  display: flex; flex-direction: column; gap: 0.15rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  color: var(--fg-secondary);
  transition: background 120ms ease, color 120ms ease;
}
.nav-mega-link:hover, .nav-mega-link:focus-visible {
  background: rgba(255,255,255,0.04);
  color: var(--fg-primary);
  outline: none;
}
.nav-mega-title { font-weight: 600; color: var(--fg-primary); }
.nav-mega-desc { font-size: 0.85rem; color: var(--fg-muted); }
.nav-mega-featured { background: rgba(246, 213, 56, 0.08); border: 1px solid rgba(246, 213, 56, 0.2); }
.nav-mega-featured:hover { background: rgba(246, 213, 56, 0.12); }
.nav-mega-hub { border-bottom: 1px dashed var(--border); padding-bottom: 0.75rem; margin-bottom: 0.25rem; }
.nav-mega-footer {
  max-width: 1200px; margin: 1.25rem auto 0; padding: 1rem 1.5rem 0;
  border-top: 1px solid var(--border);
}
.nav-mega-all { color: var(--fg-secondary); font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.85rem; }
.nav-mega-all:hover { color: var(--accent-1, #f6d538); }

@media (max-width: 820px) {
  .nav-mega {
    position: static;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0.5rem 0 0;
  }
  .nav-mega-inner { grid-template-columns: 1fr; gap: 1rem; padding: 0; }
  .nav-mega-footer { margin-top: 0.5rem; padding: 0.5rem 0 0; border-top: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .nav-caret { transition: none; }
  .nav-mega-link { transition: none; }
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  padding: var(--space-16) 0 var(--space-8);
  border-top: 1px solid var(--border);
  margin-top: var(--space-32);
}
.site-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
@media (max-width: 768px) {
  .site-footer-grid { grid-template-columns: 1fr 1fr; }
}
.site-footer h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--fg-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.site-footer ul { display: flex; flex-direction: column; gap: var(--space-2); }
.site-footer a {
  color: var(--fg-secondary);
  font-size: var(--text-sm);
  transition: color var(--duration-fast) var(--ease-out);
}
.site-footer a:hover { color: var(--accent-1); }
.site-footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  color: var(--fg-tertiary);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
}
@media (max-width: 768px) {
  .site-footer-bottom { flex-direction: column; gap: var(--space-2); }
}

/* ========================================
   Cards
   ======================================== */
.card {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-base) var(--ease-out);
}
/* Author display:flex on .card overrides the UA [hidden] default,
   which breaks JS filters that toggle the hidden attribute. Restore it. */
.card[hidden] { display: none; }
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.card-service .card-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.card-service h3 { font-size: var(--text-xl); margin-bottom: var(--space-3); }
.card-service p { font-size: var(--text-base); color: var(--fg-secondary); margin-bottom: var(--space-6); flex: 1; }

/* ========================================
   Terminal-style callout
   ======================================== */
.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-1);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--fg-secondary);
  overflow-x: auto;
}
.terminal .prompt { color: var(--accent-1); user-select: none; margin-right: var(--space-2); }

/* ========================================
   Code block
   ======================================== */
.code-block {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-x: auto;
  margin: var(--space-6) 0;
}
.code-block pre { white-space: pre; }
.code-block-copy {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: var(--bg-secondary);
  color: var(--fg-secondary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  border: 1px solid var(--border);
  cursor: pointer;
}
.code-block-copy:hover { color: var(--accent-1); border-color: var(--accent-1); }

/* ========================================
   CTA band
   ======================================== */
.cta-band {
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-elevated));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  margin: var(--space-24) 0;
}
.cta-band h2 { margin-bottom: var(--space-4); }
.cta-band p { max-width: 60ch; margin: 0 auto var(--space-8); color: var(--fg-secondary); }
.cta-band .btn-group { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }

/* ========================================
   Eyebrow label
   ======================================== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-1);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: var(--space-4);
  display: inline-block;
}

/* ========================================
   Motion
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-slow) var(--ease-out), transform var(--duration-slow) var(--ease-out);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}