/* shared-nav.css — Heritage Navigation · Delta Mill Society */

/* ─────────────────────────────────────────────────────────────
   Scoped entirely to .hn-* selectors so there is no conflict
   with any page-specific CSS already in place.
───────────────────────────────────────────────────────────── */

.hn-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(245,243,241,0.95);
  backdrop-filter: blur(10px) saturate(1.06);
  -webkit-backdrop-filter: blur(10px) saturate(1.06);
  border-bottom: 1px solid rgba(31,27,22,0.12);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.hn-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(20px,4vw,56px);
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

/* ─── Brand ─────────────────────────────────────────────── */
.hn-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  text-decoration: none;
  flex-shrink: 0;
  gap: 1px;
}
.hn-brand-org {
  font-family: "JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
  font-size: 10px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: #6a5d4e;
  font-weight: 400;
}
.hn-brand-name {
  font-family: "Cormorant Garamond","Times New Roman",serif;
  font-weight: 400;
  font-style: italic;
  font-size: 17px;
  letter-spacing: .01em;
  color: #1f1b16;
}
.hn-brand:hover .hn-brand-name { color: #523819; }

/* Vertical rule separator */
.hn-sep {
  width: 1px;
  height: 26px;
  background: rgba(31,27,22,0.14);
  flex-shrink: 0;
}

/* ─── Desktop menu ───────────────────────────────────────── */
.hn-menu {
  display: flex;
  align-items: center;
  gap: 0;
  flex: 1;
  justify-content: flex-end;
}

.hn-item {
  position: relative;
}

/* Top-level nav link */
.hn-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 13px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .03em;
  color: #3a3128;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s;
  cursor: default;
  user-select: none;
}
.hn-link::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid currentColor;
  opacity: .45;
  flex-shrink: 0;
  margin-top: 1px;
  transition: transform .2s;
}
.hn-item:hover > .hn-link,
.hn-item:focus-within > .hn-link { color: #1f1b16; }
.hn-item:hover > .hn-link::after { transform: rotate(180deg); opacity: .7; }

/* Active page underline */
.hn-item.hn-active > .hn-link {
  color: #1f1b16;
  position: relative;
}
.hn-item.hn-active > .hn-link > span {
  position: relative;
}
.hn-item.hn-active > .hn-link > span::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1px;
  background: #523819;
}

/* ─── Dropdown ───────────────────────────────────────────── */
.hn-drop {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 218px;
  padding: 0 0 10px;
  background: rgba(245,243,241,0.99);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(31,27,22,0.13);
  border-top: 2px solid #523819;
  box-shadow: 0 8px 32px -8px rgba(31,27,22,0.14);

  opacity: 0;
  pointer-events: none;
  transform: translateY(-5px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.hn-item:hover .hn-drop,
.hn-item:focus-within .hn-drop {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.hn-drop-head {
  padding: 10px 16px 9px;
  font-family: "JetBrains Mono","IBM Plex Mono",ui-monospace,monospace;
  font-size: 10px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: #523819;
  border-bottom: 1px solid rgba(31,27,22,0.08);
  margin-bottom: 5px;
}

.hn-drop a {
  display: block;
  padding: 6px 16px 6px 18px;
  font-family: "Inter",system-ui,sans-serif;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: .01em;
  color: #3a3128;
  text-decoration: none;
  transition: color .14s, background .14s;
}
.hn-drop a:hover {
  color: #1f1b16;
  background: rgba(82,56,25,0.05);
}
.hn-drop a.hn-drop-current {
  color: #523819;
  font-weight: 500;
}

/* ─── Hamburger ──────────────────────────────────────────── */
.hn-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border: none;
  background: none;
  cursor: pointer;
  flex-shrink: 0;
  padding: 0;
}
.hn-burger span {
  display: block;
  width: 20px;
  height: 1px;
  background: #1f1b16;
  transition: transform .22s ease, opacity .22s ease;
  transform-origin: center;
}
.hn-burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.hn-burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.hn-burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ─── Mobile ─────────────────────────────────────────────── */
@media (max-width: 820px) {
  .hn-sep { display: none; }
  .hn-burger { display: flex; }

  .hn-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(245,243,241,0.98);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(31,27,22,0.14);
    max-height: calc(100vh - 58px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .hn-menu.open { display: flex; }

  .hn-item {
    border-bottom: 1px solid rgba(31,27,22,0.07);
  }
  .hn-item:last-child { border-bottom: none; }

  .hn-link {
    padding: 13px 24px;
    font-size: 17px;
    cursor: pointer;
    justify-content: space-between;
  }
  /* on mobile, arrow rotates on open */
  .hn-item.mob-open > .hn-link::after {
    transform: rotate(180deg);
    opacity: .7;
  }

  /* dropdown becomes accordion panel */
  .hn-drop {
    position: static;
    opacity: 1;
    pointer-events: auto;
    transform: none;
    border: none;
    border-top: none;
    border-left: 2px solid #523819;
    background: rgba(82,56,25,0.04);
    box-shadow: none;
    margin: 0 24px 10px 24px;
    padding: 4px 0 6px;
    display: none;
  }
  .hn-item.mob-open .hn-drop { display: block; }
  .hn-drop-head { display: none; }
  .hn-drop a {
    padding: 7px 14px;
    font-size: 16px;
  }

  .hn-item.hn-active > .hn-link > span::after { display: none; }
}

/* ════════════════════════════════ SHARED FOOTER */
.shared-footer {
  padding: clamp(28px, 3.5vw, 44px) 0;
  border-top: 1px solid rgba(31,27,22,.12);
  background: var(--bg, var(--ivory, #F5F3F1));
  text-align: center;
}
.shared-footer-inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
}
.shared-footer p {
  font-family: var(--mono, ui-monospace, monospace);
  font-size: 14px;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: var(--ink-3, var(--muted, #8a7f78));
  margin: 0;
}
.shared-footer a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(31,27,22,.18);
  transition: color .2s, text-decoration-color .2s;
}
.shared-footer a:hover {
  color: var(--umber-deep, #523819);
  text-decoration-color: var(--umber-deep, #523819);
}
@media (max-width: 600px) {
  .shared-footer-inner { padding: 0 24px; }
}