/* Header — sticky glass + yellow CTA */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-header);
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: linear-gradient(180deg, rgba(6, 6, 18, 0.55), rgba(6, 6, 18, 0.12));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-medium) var(--ease-out),
    background var(--transition-medium) var(--ease-out),
    box-shadow var(--transition-medium) var(--ease-out),
    backdrop-filter var(--transition-medium) var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(16, 16, 36, 0.92);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.site-header__inner {
  width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.brand img {
  height: 1.85rem;
  width: auto;
  filter: drop-shadow(0 0 12px rgba(34, 211, 238, 0.35));
}

.nav {
  display: none;
  align-items: center;
  gap: clamp(0.85rem, 1.2vw, 1.5rem);
}

.nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition-fast) ease;
}

.nav a:hover,
.nav a[aria-current="true"] {
  color: var(--color-white);
}

.header-actions {
  display: none;
  align-items: center;
  gap: var(--space-3);
}

.social-row {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.social-row a,
.social-row__soon {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: var(--radius-full);
  color: var(--color-muted);
  border: 1px solid transparent;
  transition: color var(--transition-fast) ease, border-color var(--transition-fast) ease,
    background var(--transition-fast) ease;
}

.social-row a:hover {
  color: var(--color-cyan);
  border-color: rgba(34, 211, 238, 0.35);
  background: var(--color-cyan-soft);
}

.social-row__soon {
  opacity: 0.45;
  cursor: default;
}

.social-row svg {
  width: 1rem;
  height: 1rem;
  fill: currentColor;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-panel {
  display: none;
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: var(--z-header);
  background: rgba(16, 16, 36, 0.98);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-3);
  overflow: auto;
}

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

.nav-panel a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.nav-panel .btn {
  margin-top: var(--space-4);
  width: 100%;
}

@media (min-width: 980px) {
  .nav,
  .header-actions {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
  .nav-panel {
    display: none !important;
  }
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8) var(--space-6);
  background: linear-gradient(180deg, transparent, rgba(124, 58, 237, 0.08));
}

.footer-grid {
  display: grid;
  gap: var(--space-7);
}

.footer-brand img {
  height: 2rem;
  margin-bottom: var(--space-3);
}

.footer-brand p {
  color: var(--color-muted);
  font-size: var(--text-sm);
  max-width: 24rem;
  line-height: 1.6;
}

.footer-nav {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
}

.footer-nav h3 {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-cyan);
}

.footer-nav a {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-muted);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast) ease;
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: var(--space-7);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-muted);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.3fr 2fr;
  }
}