/* Site navigation + mobile hardening — humanrnaproject.com (Oct 2026)
   Static header lives OUTSIDE <x-dc> so a dc-runtime error can never take the menu down. */
:root { --nav-h: 60px; }
html { scroll-padding-top: calc(var(--nav-h) + 8px); }
section[id] { scroll-margin-top: calc(var(--nav-h) + 8px); }

#site-nav {
  position: sticky; top: 0; z-index: 1000;
  background: #18211A; color: #F2EBDC;
  border-bottom: 0.5px solid rgba(242,235,220,0.28);
  font-family: "DM Sans", "Helvetica Neue", system-ui, sans-serif;
  padding-top: env(safe-area-inset-top);
}
#site-nav * { box-sizing: border-box; }
#site-nav a { color: inherit; text-decoration: none; }
#site-nav .sn-bar {
  max-width: 1360px; margin: 0 auto; height: var(--nav-h);
  padding: 0 clamp(16px, 4vw, 48px);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
#site-nav .sn-mark { display: flex; align-items: baseline; gap: 12px; white-space: nowrap; min-width: 0; }
#site-nav .sn-mark-name { font-family: "Newsreader", Georgia, serif; font-size: 21px; letter-spacing: -0.01em; color: #F2EBDC; }
#site-nav .sn-mark-sub { font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: #C8A26A; }

/* tags */
.sn-tag {
  display: inline-block; margin-left: 6px; padding: 1px 6px 2px; border-radius: 999px;
  font-size: 9px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; line-height: 1.4;
  vertical-align: 2px; border: 0.5px solid #C8A26A; color: #C8A26A;
}
.sn-tag.sn-ai { background: #C8A26A; color: #18211A; }

/* ---------- Desktop: single row, dropdown groups ---------- */
#site-nav .sn-groups { display: flex; align-items: center; gap: 4px; list-style: none; margin: 0; padding: 0; }
#site-nav .sn-group { position: relative; }
#site-nav .sn-trigger, #site-nav .sn-direct {
  appearance: none; background: transparent; border: 0; cursor: pointer;
  font: inherit; font-size: 14px; color: #EAE1CC; padding: 10px 12px; border-radius: 6px;
  display: inline-flex; align-items: center; gap: 6px; line-height: 1;
}
#site-nav .sn-trigger:hover, #site-nav .sn-direct:hover,
#site-nav .sn-trigger[aria-expanded="true"] { color: #C8A26A; }
#site-nav .sn-trigger:focus-visible, #site-nav .sn-direct:focus-visible,
#site-nav .sn-panel a:focus-visible, #site-nav .sn-menu-btn:focus-visible {
  outline: 2px solid #C8A26A; outline-offset: 2px;
}
#site-nav .sn-caret { width: 8px; height: 8px; border-right: 1.2px solid currentColor; border-bottom: 1.2px solid currentColor; transform: rotate(45deg) translateY(-2px); transition: transform .2s ease; }
#site-nav .sn-trigger[aria-expanded="true"] .sn-caret { transform: rotate(225deg) translateY(-1px); }
#site-nav .sn-panel {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 240px;
  background: #18211A; border: 0.5px solid rgba(200,162,106,0.35); border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.45); padding: 8px; list-style: none; margin: 0;
}
#site-nav .sn-group:nth-last-child(-n+3) .sn-panel { left: auto; right: 0; }
#site-nav .sn-panel[hidden] { display: none; }
#site-nav .sn-panel a { display: block; padding: 10px 12px; border-radius: 6px; font-size: 15px; color: #F2EBDC; }
#site-nav .sn-panel a:hover { background: rgba(242,235,220,0.06); color: #C8A26A; }
#site-nav .sn-menu-btn { display: none; }
#site-nav .sn-mobile { display: none; }

/* ---------- Mobile (<768px): compact bar + slide-down panel ---------- */
@media (max-width: 767px) {
  :root { --nav-h: 56px; }
  #site-nav .sn-groups { display: none; }
  #site-nav .sn-mark-name { font-size: 19px; }
  #site-nav .sn-mark-sub { font-size: 10px; letter-spacing: 0.16em; }
  #site-nav .sn-menu-btn {
    display: inline-flex; align-items: center; gap: 10px;
    appearance: none; background: transparent; cursor: pointer;
    border: 0.5px solid rgba(242,235,220,0.35); border-radius: 999px;
    color: #F2EBDC; font: inherit; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
    padding: 8px 14px; min-height: 40px;
  }
  #site-nav .sn-burger { position: relative; width: 16px; height: 10px; }
  #site-nav .sn-burger::before, #site-nav .sn-burger::after {
    content: ""; position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor; transition: transform .2s ease, top .2s ease;
  }
  #site-nav .sn-burger::before { top: 1px; }
  #site-nav .sn-burger::after { top: 7px; }
  #site-nav .sn-menu-btn[aria-expanded="true"] .sn-burger::before { top: 4px; transform: rotate(45deg); }
  #site-nav .sn-menu-btn[aria-expanded="true"] .sn-burger::after { top: 4px; transform: rotate(-45deg); }

  #site-nav .sn-mobile {
    display: block; position: fixed; left: 0; right: 0;
    top: calc(var(--nav-h) + env(safe-area-inset-top)); bottom: 0;
    background: #18211A; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain;
    padding: 8px 20px calc(32px + env(safe-area-inset-bottom));
    border-top: 0.5px solid rgba(242,235,220,0.18);
    transform: translateY(-8px); opacity: 0; transition: opacity .18s ease, transform .18s ease;
  }
  #site-nav .sn-mobile[hidden] { display: none; }
  #site-nav .sn-mobile.sn-open { transform: none; opacity: 1; }
  #site-nav .sn-mgroup { padding: 18px 0 10px; border-bottom: 0.5px solid rgba(242,235,220,0.14); }
  #site-nav .sn-mhead { font-size: 11px; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: #A7B091; margin: 0 0 6px; }
  #site-nav .sn-mgroup ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
  #site-nav .sn-mgroup a { display: block; padding: 10px 0; font-family: "Newsreader", Georgia, serif; font-size: 20px; line-height: 1.2; color: #F2EBDC; }
  #site-nav .sn-mgroup a:active { color: #C8A26A; }
  #site-nav .sn-mnote { margin-top: 20px; font-size: 12px; line-height: 1.5; color: #A7B091; }
  html.sn-lock, html.sn-lock body { overflow: hidden; }
}

/* ---------- AI disclosure label ---------- */
.ai-disclosure {
  display: flex; gap: 10px; align-items: flex-start;
  margin: 24px 0 0; padding: 12px 16px; max-width: 760px;
  border: 0.5px solid rgba(200,162,106,0.55); border-left: 3px solid #C8A26A; border-radius: 6px;
  background: rgba(200,162,106,0.08);
  font-family: "DM Sans", system-ui, sans-serif; font-size: 14px; line-height: 1.5; color: #F2EBDC;
}
.ai-disclosure b { color: #C8A26A; font-weight: 600; }

/* ---------- Mobile hardening for the dc-runtime page ---------- */
#dc-root { overflow-x: clip; }
@media (max-width: 767px) {
  /* the main column must never be wider than the screen */
  #dc-root > .sc-host > div, #dc-root > div { overflow-x: clip; }
  #dc-root { overflow-wrap: anywhere; }
  /* side padding 48px -> 20px */
  #dc-root [style*="padding: 0px 48px"] { padding-left: 20px !important; padding-right: 20px !important; }
  #dc-root [style*="48px;"][style*="max-width: 1360px"] { padding-left: 20px !important; padding-right: 20px !important; }
  /* hero: smaller title, tighter spacing, never overflow */
  #dc-root section#top h1 { font-size: clamp(64px, 19vw, 96px) !important; margin-top: 20px !important; overflow-wrap: normal; }
  #dc-root section#top [style*="padding: 88px 0px 96px"] { padding: 40px 0 48px !important; gap: 40px !important; }
  #dc-root section#top p { margin-top: 28px !important; }
  /* two-column label/value grids collapse */
  #dc-root [style*="grid-template-columns: minmax(0px, 200px) minmax(0px, 1fr)"] { grid-template-columns: minmax(0, 1fr) !important; }
  #dc-root [style*="grid-template-columns: minmax(0px, 1fr) 120px 200px"] { grid-template-columns: minmax(0, 1fr) 64px 96px !important; gap: 8px 12px !important; }
  #dc-root [style*="minmax(140px, 1fr)"] { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)) !important; }
  #dc-root [style*="grid-template-columns: repeat(auto-fit, minmax(200px, 1fr))"] { grid-template-columns: 1fr 1fr !important; }
  #dc-root [style*="padding: 40px 0px 44px 40px"] { padding-left: 16px !important; }
  #dc-root section#brain h2 { font-size: clamp(48px, 15vw, 72px) !important; }
}
/* hero portrait: reserve space + placeholder while loading */
#dc-root section#top figure img {
  aspect-ratio: 4 / 5; width: 100%; height: auto;
  background: linear-gradient(160deg, rgba(242,235,220,0.10), rgba(200,162,106,0.10)) #223026;
}
/* iOS Safari toolbar: keep last content + chat button above the safe area */
body { padding-bottom: env(safe-area-inset-bottom); }
#dc-root section#top figcaption { padding-bottom: env(safe-area-inset-bottom); }
#sung-chat-btn { bottom: calc(24px + env(safe-area-inset-bottom)) !important; }
#sung-chat-panel { bottom: calc(90px + env(safe-area-inset-bottom)) !important; }