/* ============================================================
   HEADER — LAYOUT C
   Ultra-minimal: logo left, single CTA right.
   Nav hidden behind a menu button that opens a full-width
   dropdown drawer instead of an inline nav bar.
   ============================================================ */

.header-c {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color 0.4s ease;
}

.header-c-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* ── Logo ──────────────────────────────────────────────── */
.header-c-inner .header-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-heading);
  letter-spacing: -0.02em;
  transition: color 0.3s ease;
}

.header-c-inner .header-logo:hover { color: var(--color-primary); }

.header-c-inner .logo-mark {
  width: 32px; height: 32px;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 900;
  color: var(--color-btn-text);
  flex-shrink: 0;
}

/* ── Right: CTA + menu trigger ─────────────────────────── */
.header-c-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-c-right .btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

/* ── Menu trigger ──────────────────────────────────────── */
.header-c-menu-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.header-c-menu-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.header-c-menu-btn svg {
  width: 16px; height: 16px;
  stroke: currentColor; fill: none;
  stroke-width: 2; stroke-linecap: round;
}

/* ── Full-width nav drawer ─────────────────────────────── */
.header-c-drawer {
  display: none;
  border-top: 1px solid var(--color-border);
  background-color: var(--nav-bg);
}

.header-c-drawer.is-open { display: block; }

.header-c-drawer-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding: 0;
}

.header-c-drawer-link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
}

.header-c-drawer-link:last-child { border-right: none; }

.header-c-drawer-link:hover {
  background-color: var(--color-primary-soft);
}

.header-c-drawer-link-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-heading);
  transition: color 0.2s ease;
}

.header-c-drawer-link:hover .header-c-drawer-link-title {
  color: var(--color-primary);
}

.header-c-drawer-link-desc {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 600px) {
  .header-c-right .btn-outline { display: none; }

  .header-c-drawer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .header-c-drawer-link:nth-child(2) { border-right: none; }
  .header-c-drawer-link:nth-child(3),
  .header-c-drawer-link:nth-child(4) {
    border-top: 1px solid var(--color-border);
  }
}