/* ============================================================
   SHELL — masthead, navigation, footer, boot sequence
   ============================================================ */

/* ---------- MASTHEAD -------------------------------------- */
.mast {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: var(--z-nav);
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s3);
  padding: 0.9rem var(--gutter);
  background: linear-gradient(180deg, rgba(41,45,51,0.95), rgba(41,45,51,0.75) 65%, transparent);
  backdrop-filter: blur(3px);
  transition: transform var(--d-2) var(--e-out), opacity var(--d-2) var(--e-out);
}
.mast[data-hidden="true"] { transform: translateY(-102%); opacity: 0; }
body.is-booting .mast { opacity: 0; pointer-events: none; }

.mast__id {
  display: flex; align-items: baseline; gap: 0.6rem;
  text-decoration: none; color: var(--bone);
  font-family: var(--f-ui); font-size: var(--t-ui);
  letter-spacing: var(--track-ui); text-transform: uppercase;
  white-space: nowrap;
}
.mast__id b { font-weight: 600; letter-spacing: var(--track-ui); }
.mast__id span { color: var(--bone-4); }
@media (max-width: 460px) { .mast__id span { display: none; } }

.nav { display: flex; align-items: center; gap: clamp(0.9rem, 2vw, 2rem); }
@media (max-width: 860px) { .nav { display: none; } }

.nav a {
  font-family: var(--f-ui); font-size: var(--t-ui);
  letter-spacing: var(--track-ui); text-transform: uppercase;
  color: var(--bone-2); text-decoration: none;
  padding: 0.4rem 0; position: relative;
  transition: color var(--d-1) var(--e-out);
}
.nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1px; background: var(--warm);
  transition: right var(--d-2) var(--e-out);
}
.nav a:hover, .nav a:focus-visible { color: var(--bone); }
.nav a:hover::after, .nav a:focus-visible::after { right: 0; }
.nav a[aria-current="page"] { color: var(--warm); }
.nav a[aria-current="page"]::after { right: 0; }

/* ---------- MOBILE NAV ------------------------------------ */
.burger {
  display: none;
  background: none; border: 1px solid var(--rule-strong);
  color: var(--bone); cursor: pointer;
  font-family: var(--f-ui); font-size: var(--t-ui);
  letter-spacing: var(--track-ui); text-transform: uppercase;
  padding: 0.65rem 0.85rem;
}
@media (max-width: 860px) { .burger { display: block; } }

.drawer {
  position: fixed; inset: 0; z-index: var(--z-modal);
  background: var(--ink-950);
  display: grid; grid-template-rows: auto 1fr auto;
  padding: 0.9rem var(--gutter) var(--s5);
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform var(--d-3) var(--e-out), visibility var(--d-3);
  overflow-y: auto;
}
.drawer[data-open="true"] { transform: none; visibility: visible; }
.drawer__top { display: flex; justify-content: space-between; align-items: center; }
.drawer__nav { display: flex; flex-direction: column; justify-content: center; gap: 0.2rem; }
.drawer__nav a {
  font-family: var(--f-display); font-size: clamp(1.9rem, 9vw, 3rem);
  color: var(--bone); text-decoration: none;
  padding: 0.35rem 0; border-bottom: 1px solid var(--rule-2);
  display: flex; align-items: baseline; gap: 0.8rem;
}
.drawer__nav a i {
  font-family: var(--f-ui); font-size: var(--t-ui); font-style: normal;
  letter-spacing: var(--track-ui); color: var(--warm);
}
.drawer__nav a[aria-current="page"] { color: var(--warm); }
.drawer__foot { font-family: var(--f-ui); font-size: var(--t-ui); letter-spacing: var(--track-ui); color: var(--bone-4); text-transform: uppercase; }

body.is-locked { overflow: hidden; }

/* ---------- FOOTER ---------------------------------------- */
.foot {
  position: relative; z-index: var(--z-body);
  border-top: 1px solid var(--rule);
  padding-block: var(--s6) var(--s5);
  background: var(--void);
}
.foot__grid {
  display: grid; gap: var(--s5);
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
}
@media (max-width: 800px) { .foot__grid { grid-template-columns: 1fr; gap: var(--s4); } }

.foot h2 { font-family: var(--f-ui); font-size: var(--t-ui); letter-spacing: var(--track-ui); text-transform: uppercase; color: var(--bone-4); margin-bottom: var(--s3); font-weight: 450; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.55rem; }
.foot a { color: var(--bone-2); text-decoration: none; font-size: var(--t-sm); transition: color var(--d-1) var(--e-out); }
.foot a:hover, .foot a:focus-visible { color: var(--warm); }

.foot__note { font-size: var(--t-sm); color: var(--bone-3); max-width: 30rem; }
.foot__bar {
  margin-top: var(--s6); padding-top: var(--s3);
  border-top: 1px solid var(--rule-2);
  display: flex; flex-wrap: wrap; gap: var(--s3) var(--s4); justify-content: space-between;
  font-family: var(--f-ui); font-size: var(--t-ui); letter-spacing: var(--track-ui);
  text-transform: uppercase; color: var(--bone-4);
}

/* ---------- BOOT SEQUENCE --------------------------------- */
/* An archive retrieval, not a loading screen. It never gates
   content: the page below is in the DOM and reachable, and any
   input dismisses the sequence immediately. */

.boot {
  position: fixed; inset: 0; z-index: var(--z-boot);
  background: var(--void);
  display: grid; align-content: center;
  padding: var(--gutter);
  transition: opacity var(--d-3) var(--e-out), visibility var(--d-3);
}
.boot[data-done="true"] { opacity: 0; visibility: hidden; pointer-events: none; }
.boot__inner { width: 100%; max-width: 46rem; margin-inline: auto; }

.boot__line {
  display: grid; grid-template-columns: minmax(0,1fr) auto;
  gap: var(--s3); align-items: baseline;
  font-family: var(--f-ui); font-size: var(--t-ui);
  letter-spacing: var(--track-ui); text-transform: uppercase;
  color: var(--bone-4);
  padding: 0.42rem 0;
  border-bottom: 1px solid var(--rule-2);
  opacity: 0;
}
.boot__line.is-on { opacity: 1; }
.boot__line b { font-weight: 450; color: var(--bone-3); }
.boot__line i { font-style: normal; color: var(--graphite); }
.boot__line i[data-v="hold"] { color: var(--warm); }
.boot__line i[data-v="div"] { color: var(--stamp); }

.boot__caret {
  display: inline-block; width: 0.55em; height: 1em;
  background: var(--warm); vertical-align: -0.12em;
  animation: caret 1s steps(2) infinite;
}
@keyframes caret { 50% { opacity: 0; } }

.boot__skip {
  margin-top: var(--s4);
  font-family: var(--f-ui); font-size: var(--t-ui); letter-spacing: var(--track-ui);
  text-transform: uppercase; color: var(--bone-4);
  background: none; border: 0; padding: 0.5rem 0; cursor: pointer;
  opacity: 0; transition: opacity var(--d-2) var(--e-out);
}
.boot__skip.is-on { opacity: 1; }
.boot__skip:hover { color: var(--warm); }