/* Dark fixed header + full-screen overlay menu. */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px clamp(16px, 4vw, 36px);
  background: rgba(18, 17, 14, 0.94);
  border-bottom: 1px solid rgba(227, 160, 8, 0.16);
  box-shadow: 0 14px 34px -28px rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
}
.site-header.is-scrolled {
  background: rgba(14, 13, 11, 0.98);
  border-bottom-color: rgba(227, 160, 8, 0.28);
}
.site-header .brand {
  display: inline-flex;
  align-items: center;
  color: var(--paper);
}
.site-header .brand img {
  height: 46px;
  width: auto;
  object-fit: contain;
}
.site-header .menu-btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--paper);
  background: transparent;
  border: 1px solid rgba(241, 235, 221, 0.28);
  border-radius: var(--radius-sm);
  padding: 0.46rem 1rem;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.site-header .menu-btn:hover,
.site-header .menu-btn:focus-visible,
.site-header .menu-btn[aria-expanded="true"] {
  color: var(--gold-bright);
  border-color: var(--gold);
  background: rgba(227, 160, 8, 0.1);
  outline: none;
}

body.menu-open { overflow: hidden; }

.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(5rem, 10vh, 7rem) clamp(1.5rem, 7vw, 6rem) clamp(2rem, 6vh, 5rem);
  background:
    radial-gradient(ellipse 70% 50% at 86% 12%, rgba(227, 160, 8, 0.12), transparent 62%),
    linear-gradient(145deg, #0f0e0c 0%, #171512 56%, #211d15 100%);
  color: var(--paper);
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.menu-overlay.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
}
.menu-overlay::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-bright), transparent);
  opacity: 0.65;
}
.menu-inner {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(16rem, 0.8fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}
.menu-primary,
.menu-story-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.menu-primary {
  display: flex;
  flex-direction: column;
  gap: clamp(0.36rem, 1.3vh, 0.9rem);
}
.menu-link,
.story-link {
  display: flex;
  align-items: baseline;
  text-decoration: none;
  transition: color 0.24s ease, transform 0.24s ease;
}
.menu-link {
  gap: clamp(0.9rem, 2vw, 1.6rem);
  color: var(--paper);
  padding: 0.08em 0;
}
.m-no {
  font-family: var(--font-mono);
  color: rgba(241, 235, 221, 0.48);
  transition: color 0.24s ease;
}
.menu-link .m-no {
  min-width: 2.2em;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}
.menu-link .m-label {
  font-family: var(--font-thai);
  font-weight: 700;
  font-size: clamp(1.85rem, 4.8vw, 3.35rem);
  line-height: 1.05;
  letter-spacing: 0;
}
.menu-link:hover,
.menu-link:focus-visible,
.story-link:hover,
.story-link:focus-visible {
  color: var(--gold-bright);
  transform: translateX(6px);
  outline: none;
}
.menu-link:hover .m-no,
.menu-link:focus-visible .m-no,
.story-link:hover .m-no,
.story-link:focus-visible .m-no {
  color: var(--gold);
}
.menu-story {
  border-left: 1px solid rgba(241, 235, 221, 0.16);
  padding-left: clamp(1.2rem, 3vw, 2.4rem);
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.menu-story-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-bright);
}
.menu-story-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.story-link {
  gap: var(--space-3);
  color: rgba(241, 235, 221, 0.78);
}
.story-link .m-no {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}
.story-link .m-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0;
}
.menu-footer {
  grid-column: 1 / -1;
  margin-top: clamp(2rem, 5vh, 3.5rem);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(241, 235, 221, 0.14);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.menu-brand {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--paper);
}
.menu-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(241, 235, 221, 0.56);
  letter-spacing: 0.06em;
}

@media (max-width: 768px) {
  .site-header { min-height: 68px; padding-inline: 14px; }
  .site-header .brand img { height: 40px; }
  .menu-overlay { justify-content: flex-start; padding-top: 6rem; }
  .menu-inner { grid-template-columns: 1fr; gap: var(--space-5); }
  .menu-story {
    border-left: 0;
    border-top: 1px solid rgba(241, 235, 221, 0.16);
    padding-left: 0;
    padding-top: var(--space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .menu-link,
  .story-link {
    transition: color 0.15s ease;
    transform: none !important;
  }
  .menu-overlay { transition: opacity 0.2s ease; }
}