/* Minimal Sticky Header & Full-Screen Overlay Navigation */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  background-color: var(--color-bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

/* Left Side: Name + Role Identity Lockup — the whole thing is the home
   link, so no underline/link-color treatment on the container itself;
   only the name reacts on hover, same as before. */
.site-logo-minimal {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 7px;
  text-decoration: none;
}

/* Sized specifically for the header lockup (not the shared --text-2xl
   token, which other headings may still rely on) — roughly 18% smaller
   than that token's own range, so the wordmark stays the primary element
   in the header without dominating the fixed-height bar. */
.site-logo-name {
  font-family: var(--font-family-wordmark);
  font-style: italic;
  font-size: clamp(1.4rem, 1.15rem + 1.2vw, 2.25rem);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
  transition: color var(--transition-fast);
}

.site-logo-minimal:hover .site-logo-name {
  color: var(--color-text-accent);
}

/* Understated role label beneath the name — small, uppercase, and quiet
   relative to the wordmark above it. */
.site-logo-role {
  font-family: var(--font-family-body);
  font-size: 0.65rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-clay-deep);
  line-height: 1;
}

/* Right Side Controls (Resting State) */
.header-right-controls {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

/* Minimal Two-Line Menu Icon Trigger */
.nav-toggle-minimal {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-1);
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  cursor: pointer;
  outline: none;
  transition: color var(--transition-fast);
}

.nav-toggle-minimal:hover {
  color: var(--color-text-accent);
}

.nav-toggle-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: currentColor;
}

.two-line-icon {
  display: block;
  width: 22px;
  height: 12px;
  position: relative;
}

.two-line-icon::before,
.two-line-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background-color: currentColor;
  border-radius: 1px;
  transition: transform var(--transition-base), top var(--transition-base), background-color var(--transition-fast);
}

.two-line-icon::before {
  top: 2px;
}

.two-line-icon::after {
  top: 8px;
}

/* Two-Line Icon Transform when Overlay is Open */
.nav-toggle-minimal[aria-expanded="true"] .two-line-icon::before {
  top: 5px;
  transform: rotate(45deg);
}

.nav-toggle-minimal[aria-expanded="true"] .two-line-icon::after {
  top: 5px;
  transform: rotate(-45deg);
}

/* Full-Screen / Near-Full-Screen Overlay Menu — the chalkboard menu board */
.nav-overlay {
  position: fixed;
  inset: 0;
  top: var(--header-height);
  width: 100%;
  height: calc(100vh - var(--header-height));
  background-color: rgba(32, 61, 50, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 990;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--space-12) var(--space-6) var(--space-8) var(--space-6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 300ms cubic-bezier(0.16, 1, 0.3, 1), visibility 300ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.nav-overlay.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-overlay-container {
  max-width: var(--container-max-width);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 868px) {
  .nav-overlay-container {
    grid-template-columns: 1.4fr 0.6fr;
  }
}

/* Primary Overlay Navigation Links */
.overlay-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}

.overlay-nav-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 350ms cubic-bezier(0.16, 1, 0.3, 1), transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-overlay.is-active .overlay-nav-item {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered link entry transitions */
.nav-overlay.is-active .overlay-nav-item:nth-child(1) { transition-delay: 50ms; }
.nav-overlay.is-active .overlay-nav-item:nth-child(2) { transition-delay: 90ms; }
.nav-overlay.is-active .overlay-nav-item:nth-child(3) { transition-delay: 130ms; }
.nav-overlay.is-active .overlay-nav-item:nth-child(4) { transition-delay: 170ms; }
.nav-overlay.is-active .overlay-nav-item:nth-child(5) { transition-delay: 210ms; }
.nav-overlay.is-active .overlay-nav-item:nth-child(6) { transition-delay: 250ms; }

.overlay-nav-link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-4);
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse-muted);
  text-decoration: none;
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.overlay-nav-number {
  font-family: var(--font-family-serif);
  font-style: italic;
  font-size: clamp(1rem, 0.9rem + 0.5vw, 1.5rem);
  font-weight: var(--font-weight-regular);
  color: var(--color-butter);
}

.overlay-nav-link:hover,
.overlay-nav-link.active {
  color: var(--color-text-inverse);
  transform: translateX(8px);
}

.overlay-nav-link.btn-overlay-contact {
  color: var(--color-butter);
}

.overlay-nav-link.btn-overlay-contact:hover {
  color: var(--color-text-inverse);
}

/* Overlay Sidebar Info */
.overlay-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-espresso);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1) 280ms, transform 400ms cubic-bezier(0.16, 1, 0.3, 1) 280ms;
}

@media (min-width: 868px) {
  .overlay-sidebar {
    border-top: none;
    border-left: 1px solid var(--color-border-espresso);
    padding-top: 0;
    padding-left: var(--space-8);
  }
}

.nav-overlay.is-active .overlay-sidebar {
  opacity: 1;
  transform: translateY(0);
}

.overlay-sidebar-title {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-inverse-muted);
}

.overlay-sidebar-text {
  font-size: var(--text-sm);
  color: var(--color-text-inverse-muted);
  line-height: var(--line-height-relaxed);
}

.overlay-sidebar-text em {
  font-family: var(--font-family-serif);
  font-style: italic;
  color: var(--color-butter);
}

.overlay-footer-note {
  max-width: var(--container-max-width);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-espresso);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-inverse-muted);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
  .nav-overlay,
  .overlay-nav-item,
  .overlay-sidebar {
    transition: none !important;
    transform: none !important;
  }
}