/* ==========================================================================
   LAYOUT — containers, header, fullscreen menu, footer, action bar
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: calc(var(--section-y) * 0.6); }
main { display: block; position: relative; }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
}
.stack > * + * { margin-top: var(--stack, var(--sp-5)); }
.rule { height: 1px; background: var(--line); border: 0; transform-origin: left center; }

/* ---- Scroll progress -------------------------------------------------- */
.scroll-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: var(--accent);
  transform-origin: 0 50%;
  transform: scaleX(var(--progress, 0));
}

/* ---- Header ----------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background-color: transparent;
  transition:
    transform 500ms var(--ease-out),
    background-color var(--dur-scene) var(--ease-in-out),
    --bg var(--dur-scene) var(--ease-in-out),
    --fg var(--dur-scene) var(--ease-in-out),
    --line var(--dur-scene) var(--ease-in-out);
}
.site-header.is-scrolled {
  background-color: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  backdrop-filter: saturate(140%) blur(12px);
  box-shadow: inset 0 -1px 0 var(--line);
}
.site-header.is-hidden { transform: translateY(-100%); }
html.menu-open .site-header { transform: none; background-color: transparent; box-shadow: none; backdrop-filter: none; }

.header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.125rem;
  line-height: 1;
  margin-right: auto;
  min-height: 44px;
}
.logo__mark { width: 28px; height: 28px; flex: none; color: var(--fg); }
.logo__sub {
  font-weight: 400;
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.header__nav ul { display: flex; gap: clamp(1rem, 1.6vw, 2rem); list-style: none; padding: 0; }
.header__nav a {
  position: relative;
  font-size: var(--fs-sm);
  font-weight: 450;
  padding-block: 0.5rem;
}
.header__nav a::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0.2rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur) var(--ease-out);
}
.header__nav a:hover::after,
.header__nav a[aria-current='page']::after { transform: scaleX(1); transform-origin: left; }
.header__tools { display: flex; align-items: center; gap: var(--sp-3); }

/* Hamburger / menu button */
.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  min-height: 44px;
  min-width: 44px;
  padding-inline: var(--sp-2);
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: 500;
}
.menu-toggle__lines { position: relative; width: 22px; height: 10px; }
.menu-toggle__lines::before,
.menu-toggle__lines::after {
  content: '';
  position: absolute;
  left: 0; right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease-out), top var(--dur) var(--ease-out);
}
.menu-toggle__lines::before { top: 0; }
.menu-toggle__lines::after { top: 8.5px; }
.menu-toggle[aria-expanded='true'] .menu-toggle__lines::before { top: 4.25px; transform: rotate(45deg); }
.menu-toggle[aria-expanded='true'] .menu-toggle__lines::after { top: 4.25px; transform: rotate(-45deg); }

/* ---- Fullscreen menu -------------------------------------------------- */
.site-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-top: calc(var(--header-h) + var(--sp-6));
  padding-bottom: calc(var(--sp-7) + env(safe-area-inset-bottom));
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
}
.site-menu.is-open { clip-path: inset(0 0 0 0); visibility: visible; }
.site-menu__inner {
  min-height: 100%;
  display: grid;
  gap: var(--sp-8);
  align-content: space-between;
}
.site-menu__list { list-style: none; padding: 0; counter-reset: menu; }
.site-menu__list li { overflow: hidden; border-bottom: 1px solid var(--line); }
.site-menu__list a {
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
  padding-block: clamp(0.6rem, 1.4vh, 1rem);
  font-size: clamp(2rem, 1.2rem + 4vw, 4.75rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
  transition: color var(--dur) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.site-menu__list a .index-num { min-width: 2.5ch; transform: translateY(-0.4em); }
.site-menu__list a:hover { transform: translateX(0.4rem); }
.site-menu__list a:hover .menu-word,
.site-menu__list a[aria-current='page'] .menu-word { font-family: var(--font-serif); font-style: italic; font-weight: 400; letter-spacing: -0.02em; }
.site-menu__aside { display: grid; gap: var(--sp-6); grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.site-menu__aside h2 { font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); font-weight: 500; margin-bottom: var(--sp-3); }
.site-menu__aside a { display: inline-block; padding-block: 0.25rem; }
.site-menu__aside a:hover { color: var(--accent); }

/* ---- Footer ----------------------------------------------------------- */
.site-footer { padding-top: var(--section-y); padding-bottom: var(--sp-7); overflow: hidden; }
.footer__top {
  display: grid;
  gap: var(--sp-7);
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  padding-bottom: var(--sp-8);
}
.footer__col h2 {
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  margin-bottom: var(--sp-4);
}
.footer__col ul { list-style: none; padding: 0; display: grid; gap: var(--sp-2); }
.footer__col a { transition: color var(--dur) var(--ease-out); }
.footer__col a:hover { color: var(--accent); }
.footer__word {
  font-size: clamp(5rem, 1rem + 19vw, 22rem);
  line-height: 0.78;
  letter-spacing: -0.07em;
  font-weight: 500;
  white-space: nowrap;
  user-select: none;
  margin-bottom: var(--sp-6);
}
.footer__word .serif { letter-spacing: -0.04em; }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4) var(--sp-6);
  justify-content: space-between;
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
  font-size: var(--fs-sm);
  color: var(--muted);
}
.demo-note {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  padding: var(--sp-4) var(--sp-5);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  color: var(--muted);
  margin-bottom: var(--sp-6);
}
.demo-note strong { color: var(--fg); font-weight: 500; }

/* ---- Mobile action bar ------------------------------------------------ */
.action-bar { display: none; }

/* ---- Page transition curtain ----------------------------------------- */
.page-curtain {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--c-black);
  pointer-events: none;
  transform: scaleY(0);
  transform-origin: bottom;
}

/* ---- Cursor follower (fine pointers only) ----------------------------- */
.cursor {
  position: fixed;
  top: 0; left: 0;
  z-index: 150;
  pointer-events: none;
  width: 84px; height: 84px;
  margin: -42px 0 0 -42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--c-ice);
  color: var(--c-black);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transform: scale(0);
  will-change: transform;
}

@media (min-width: 1024px) {
  .site-menu__inner { grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); align-items: end; align-content: center; }
  .site-menu__list a { font-size: clamp(2rem, 0.5rem + 3.6vh + 1.2vw, 4.25rem); padding-block: clamp(0.35rem, 0.9vh, 0.8rem); }
  .site-menu__aside { grid-template-columns: 1fr; gap: var(--sp-6); padding-bottom: var(--sp-3); }
}

/* Discreet staff entry: a faint dot in the menu corner that reveals a lock
   on hover/focus. Hidden from casual visitors; /admin/ itself is protected by login. */
.staff-entry {
  position: absolute;
  right: calc(var(--gutter) - 12px);
  bottom: calc(var(--sp-3) + env(safe-area-inset-bottom));
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 50%;
  color: var(--fg);
}
.staff-entry::before {
  content: '';
  width: 4px; height: 4px; border-radius: 50%;
  background: currentColor; opacity: 0.18;
  grid-area: 1 / 1;
  transition: opacity var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}
.staff-entry svg { grid-area: 1 / 1; width: 18px; height: 18px; opacity: 0; transition: opacity var(--dur) var(--ease-out); }
.staff-entry:hover::before, .staff-entry:focus-visible::before { opacity: 0; transform: scale(3); }
.staff-entry:hover svg, .staff-entry:focus-visible svg { opacity: 0.7; }