/* ============================================================
   CLIPARCHIVE — design system
   A working museum of clip art, 1980s–early 2000s.

   Register: archival paper, ink serif, monospace accession labels,
   a single oxide accent. The Old-Web vernacular — tiled ground, hit
   counter, 88×31 badges, marquee — is quoted exactly but held to
   museum discipline: quiet, deadpan, catalogued. Density is the point
   (a storeroom, not a gallery of whitespace).

   Provenance — the chrome is furnished from the collection itself
   (see site/public/img/site-assets-provenance.md):
     bg-tile.png      from acc. CA-1996-mso97clipart-00142  'bgvines'
     badge-88x31.png  mark from acc. CA-1996-mso97clipart-00661 'floppy2'
     favicon.ico      from acc. CA-1996-mso97clipart-00661  'floppy2'
     digit-0..9.png   odometer digits (drawn, PIL)

   Contrast — body/label/accent text clears WCAG AA over its ground
   (verified: ink/tile 10.3, ink-soft/tile 5.4, ink-faint/card 6.6,
   oxide/paper 5.4). Motion respects prefers-reduced-motion.
   ============================================================ */

:root {
  --paper:#e9e3d4;   --paper-2:#f4efe3;  --mount:#f6f2e8;
  --ink:#1b1917;     --ink-soft:#4c473d; --ink-faint:#5b5343;
  --line:#c9c0ad;    --line-soft:#d8d0bf;
  --oxide:#a2331e;   --oxide-soft:#b8532f;

  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,"Times New Roman",serif;
  --mono:ui-monospace,"SF Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --edge:1px solid var(--line);
  --frame:2px solid var(--ink);
  --shadow:0 1px 0 rgba(27,25,23,.04), 0 14px 30px -22px rgba(27,25,23,.5);
  --tick:.22em;                 /* label tracking */
  --pad:clamp(16px,4vw,40px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:#151310;   --paper-2:#1d1a14;  --mount:#211d16;
    --ink:#ece6d6;     --ink-soft:#b7ae9c; --ink-faint:#8b8271;
    --line:#38332a;    --line-soft:#2c2820;
    --oxide:#d2582f;   --oxide-soft:#e07a4a;
    --shadow:0 1px 0 rgba(0,0,0,.3), 0 18px 34px -22px rgba(0,0,0,.8);
  }
}
:root[data-theme="dark"] {
  --paper:#151310;--paper-2:#1d1a14;--mount:#211d16;--ink:#ece6d6;--ink-soft:#b7ae9c;
  --ink-faint:#8b8271;--line:#38332a;--line-soft:#2c2820;--oxide:#d2582f;--oxide-soft:#e07a4a;
  --shadow:0 1px 0 rgba(0,0,0,.3), 0 18px 34px -22px rgba(0,0,0,.8);
}
:root[data-theme="light"] {
  --paper:#e9e3d4;--paper-2:#f4efe3;--mount:#f6f2e8;--ink:#1b1917;--ink-soft:#4c473d;
  --ink-faint:#5b5343;--line:#c9c0ad;--line-soft:#d8d0bf;--oxide:#a2331e;--oxide-soft:#b8532f;
  --shadow:0 1px 0 rgba(27,25,23,.04), 0 14px 30px -22px rgba(27,25,23,.5);
}

/* --- base ---------------------------------------------------------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  color:var(--ink);
  background-color:var(--paper);
  background-image:url("/img/bg-tile.png");     /* the tiled wallpaper */
  background-repeat:repeat;
  font-family:var(--serif);
  font-size:17px;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
main{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(20px,4vw,40px) var(--pad) clamp(40px,7vw,72px);
}
a{color:var(--oxide);text-underline-offset:2px;text-decoration-thickness:1px}
a:hover{color:var(--oxide-soft)}
img{max-width:100%;height:auto}
h1,h2,h3{line-height:1.12;font-weight:700;margin:0 0 .4em}

.mono{font-family:var(--mono)}
.label{
  font-family:var(--mono);font-size:11px;letter-spacing:var(--tick);
  text-transform:uppercase;color:var(--ink-faint);
}

/* ============================================================
   MASTHEAD — the museum's frontispiece plate
   ============================================================ */
.masthead{
  background:var(--paper-2);
  border-bottom:var(--frame);
  border-top:6px solid var(--ink);
}
.masthead__inner{
  max-width:1180px;margin:0 auto;
  padding:clamp(14px,3vw,22px) var(--pad) clamp(12px,2.4vw,18px);
}
.masthead__kicker{
  display:flex;justify-content:space-between;align-items:baseline;
  gap:10px 18px;flex-wrap:wrap;margin-bottom:10px;
}
.masthead__title{
  font-family:var(--mono);
  font-weight:700;
  text-transform:uppercase;
  font-size:clamp(34px,10.5vw,86px);
  line-height:.82;
  letter-spacing:.01em;
  margin:0;
  color:var(--ink);
  /* pixel-signage depth: a hard offset, no blur */
  text-shadow:2px 2px 0 var(--line-soft);
  word-break:break-word;
}
.masthead__title .arc{color:var(--oxide);text-shadow:2px 2px 0 rgba(162,51,30,.18)}
.masthead__tag{
  font-family:var(--serif);font-style:italic;
  color:var(--ink-soft);font-size:clamp(14px,2.4vw,18px);
  margin:.55em 0 0;max-width:60ch;
}

/* ---- aisle-nav ---- */
.aisle-nav{
  margin-top:clamp(12px,2.4vw,18px);
  border-top:var(--edge);padding-top:10px;
  display:flex;flex-wrap:wrap;gap:2px 0;
  list-style:none;padding-left:0;
}
.aisle-nav a{
  display:block;
  font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-soft);text-decoration:none;
  padding:7px clamp(9px,2.2vw,16px);
  border:1px solid transparent;
}
.aisle-nav a[aria-current],
.aisle-nav a:hover{
  color:var(--oxide);border-color:var(--line);background:var(--paper);
}

/* ============================================================
   MARQUEE — the acquisitions ticker (Old-Web, deadpan)
   ============================================================ */
.marquee{
  overflow:hidden;white-space:nowrap;
  border-top:var(--edge);border-bottom:var(--edge);
  background:var(--paper-2);
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;
  color:var(--ink-soft);
  padding:7px 0;
}
.marquee__track{
  display:inline-block;padding-left:100%;
  animation:marquee 34s linear infinite;
}
.marquee b{color:var(--oxide);font-weight:400}
.marquee span{padding:0 1.6em;opacity:.55}   /* separators */
.marquee:hover .marquee__track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-100%)}}

/* ============================================================
   WALL TEXT — curatorial essay prose
   ============================================================ */
.wall-text{max-width:66ch;font-size:clamp(16px,2.3vw,19px);line-height:1.66;color:var(--ink)}
.wall-text p{margin:0 0 1em}
.wall-text p:first-of-type::first-letter{
  font-weight:700;font-size:3.1em;line-height:.8;float:left;
  padding:.02em .09em 0 0;color:var(--oxide);
}
.wall-text em{color:var(--oxide);font-style:italic}
.wall-text .kicker{
  display:block;font-family:var(--mono);font-size:11px;letter-spacing:var(--tick);
  text-transform:uppercase;color:var(--ink-faint);margin-bottom:.8em;
}

/* ============================================================
   STOREROOM GRID + SPECIMEN — open-storage density
   ============================================================ */
.storeroom-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(148px,1fr));
  gap:clamp(10px,1.6vw,18px);
  margin:clamp(18px,3vw,28px) 0;
}
.specimen{margin:0;display:flex;flex-direction:column}
.specimen__mount{
  position:relative;
  aspect-ratio:1/1;
  display:flex;align-items:center;justify-content:center;
  background:var(--mount);
  border:var(--edge);
  box-shadow:var(--shadow);
  padding:12px;overflow:hidden;
  transition:transform .25s cubic-bezier(.2,.7,.2,1),border-color .25s,box-shadow .25s;
}
/* corner ticks — "specimen pinned to a card" */
.specimen__mount::before,.specimen__mount::after{
  content:"";position:absolute;width:9px;height:9px;pointer-events:none;opacity:.5;
  border-color:var(--ink-faint);
}
.specimen__mount::before{top:6px;left:6px;border-top:1px solid;border-left:1px solid}
.specimen__mount::after{bottom:6px;right:6px;border-bottom:1px solid;border-right:1px solid}
.specimen__mount img{max-width:100%;max-height:100%;width:auto;object-fit:contain;image-rendering:auto}
.specimen:hover .specimen__mount{
  transform:translateY(-3px);border-color:var(--oxide);
  box-shadow:0 1px 0 rgba(0,0,0,.05),0 24px 38px -24px rgba(27,25,23,.6);
}
.specimen--empty .specimen__mount{
  background:repeating-linear-gradient(45deg,var(--mount),var(--mount) 9px,var(--paper-2) 9px,var(--paper-2) 18px);
  color:var(--ink-faint);font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;
}
.specimen-label{
  font-family:var(--mono);font-size:10.5px;line-height:1.35;
  color:var(--ink-faint);padding:7px 2px 0;
  display:flex;flex-direction:column;gap:2px;
}
.specimen-label b{color:var(--ink);font-weight:600;font-size:11.5px}
.specimen-label .acc{color:var(--oxide);letter-spacing:.04em}

/* ============================================================
   QUERY SLIP — the Archive's catalogue-search card
   ============================================================ */
.query-slip{
  border:var(--edge);background:var(--paper-2);box-shadow:var(--shadow);
  border-radius:2px;padding:12px 14px;margin:clamp(12px,2.2vw,18px) 0;
  max-width:52ch;
}
.query-slip label{display:block;margin-bottom:8px}
.query-slip__row{display:flex;gap:8px;flex-wrap:wrap}
.query-slip input[type="search"]{
  flex:1 1 200px;min-width:0;
  font-family:var(--serif);font-size:15px;color:var(--ink);
  background:var(--mount);border:1px dotted var(--line);border-radius:2px;
  padding:8px 10px;
}
.query-slip input[type="search"]:focus{outline:2px solid var(--oxide);outline-offset:1px}
.query-slip button{
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--paper-2);background:var(--oxide);border:1px solid var(--oxide);
  border-radius:2px;padding:8px 14px;cursor:pointer;
}
.query-slip button:hover{background:var(--oxide-soft);border-color:var(--oxide-soft)}

/* ============================================================
   PAGER — Earlier/Later accessions (offset paging, no page numbers)
   ============================================================ */
.pager{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin:clamp(18px,3vw,26px) 0 0;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
}
.pager__link{color:var(--oxide);text-decoration:none}
.pager__link:hover{color:var(--oxide-soft)}
.pager__link--later{margin-left:auto}

/* ============================================================
   OBJECT LABEL — the wall label / accession record
   ============================================================ */
.object-label{
  border:var(--edge);background:var(--paper-2);box-shadow:var(--shadow);
  border-radius:2px;overflow:hidden;max-width:44ch;
}
.object-label__stamp{
  display:flex;align-items:center;gap:10px;
  padding:9px 14px;border-bottom:var(--edge);
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--oxide);
}
.object-label__stamp::before{
  content:"";width:8px;height:8px;border-radius:50%;background:var(--oxide);flex:0 0 auto;
  box-shadow:0 0 0 3px color-mix(in srgb,var(--oxide) 20%,transparent);
}
.object-label dl{margin:0;padding:4px 14px 10px}
.object-label .row{
  display:grid;grid-template-columns:8.5em 1fr;gap:8px;
  padding:7px 0;border-bottom:1px dotted var(--line);
  font-family:var(--mono);font-size:12px;
}
.object-label .row:last-child{border-bottom:0}
.object-label dt{color:var(--ink-faint);letter-spacing:.05em;text-transform:uppercase;font-size:10px;align-self:center;margin:0}
.object-label dd{margin:0;color:var(--ink)}

/* ============================================================
   RETRO RULE — the horizontal-rule GIF, catalogued
   ============================================================ */
.retro-rule{
  border:0;height:0;
  border-top:1px solid var(--line);
  margin:clamp(26px,4vw,44px) 0;
  position:relative;overflow:visible;
}
.retro-rule::after{
  content:"";position:absolute;left:50%;top:0;
  width:9px;height:9px;transform:translate(-50%,-50%) rotate(45deg);
  background:var(--paper);border:1px solid var(--oxide);
}

/* ============================================================
   COUNTER — the odometer hit counter (Task 8 wires the value)
   ============================================================ */
.counter{
  display:inline-flex;align-items:center;gap:9px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10px;letter-spacing:var(--tick);
  text-transform:uppercase;color:var(--ink-faint);
}
.counter__odometer{
  display:inline-flex;gap:1px;padding:3px;
  background:var(--ink);border:1px solid var(--ink);border-radius:2px;
  box-shadow:inset 0 1px 2px rgba(0,0,0,.5);
}
.counter__odometer img{display:block;width:15px;height:auto;image-rendering:auto}
.counter__label{color:var(--ink-faint)}

/* ============================================================
   BADGE STRIP + 88×31 BUTTONS — the affiliation economy
   ============================================================ */
.badge-strip{
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
  margin:8px 0;
}
.btn-88x31{
  display:inline-flex;align-items:center;justify-content:center;
  width:88px;height:31px;flex:0 0 auto;
  padding:0;overflow:hidden;
  background:var(--paper-2);
  border:1px solid var(--ink);
  box-shadow:1px 1px 0 rgba(27,25,23,.35);
  font-family:var(--mono);font-size:9px;letter-spacing:.04em;text-transform:uppercase;
  color:var(--ink-soft);text-decoration:none;line-height:1.05;text-align:center;
}
.btn-88x31 img{width:88px;height:31px;object-fit:cover;image-rendering:auto}
.btn-88x31:hover{border-color:var(--oxide);color:var(--oxide)}

/* ============================================================
   GUESTBOOK ENTRY — visitor inscription as public ledger
   ============================================================ */
.guestbook-entry{
  border:var(--edge);border-left:3px solid var(--oxide);
  background:var(--paper-2);
  padding:11px 14px;margin:0 0 10px;
  box-shadow:var(--shadow);border-radius:2px;
}
.guestbook-entry__meta{
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;
  color:var(--ink-faint);margin-bottom:5px;
}
.guestbook-entry__meta b{color:var(--ink);font-weight:600;text-transform:none;letter-spacing:0}
.guestbook-entry__body{font-size:15px;line-height:1.5;color:var(--ink-soft);margin:0}

/* ============================================================
   COLOPHON — the closing plate: counter, badges, imprint
   ============================================================ */
.colophon{
  background:var(--paper-2);
  border-top:var(--frame);border-bottom:6px solid var(--ink);
}
.colophon__inner{
  max-width:1180px;margin:0 auto;
  padding:clamp(18px,3vw,26px) var(--pad) clamp(20px,3vw,28px);
}
.colophon__row{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  align-items:center;gap:16px 24px;
}
.colophon__imprint{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  color:var(--ink-faint);line-height:1.7;margin:14px 0 0;max-width:70ch;
}
.colophon__imprint b{color:var(--ink);font-weight:600}

/* ============================================================
   LIGHTBOX — full-screen enlargement, in place (no navigation away)
   ============================================================ */
[data-lightbox]{cursor:zoom-in}
.lightbox{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  padding:clamp(20px,5vw,60px);
  background:rgba(15,13,10,.92);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .2s ease;
}
.lightbox--open{opacity:1;visibility:visible;pointer-events:auto}
.lightbox__close{
  position:absolute;top:16px;right:18px;
  background:transparent;border:1px solid var(--paper);color:var(--paper);
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  padding:6px 10px;border-radius:2px;cursor:pointer;
}
.lightbox__close:hover{border-color:var(--oxide-soft);color:var(--oxide-soft)}
.lightbox__figure{margin:0;max-width:min(90vw,900px);text-align:center}
.lightbox__img{
  display:block;margin:0 auto;
  max-width:100%;max-height:78vh;width:auto;height:auto;
  background:var(--mount);border:var(--edge);box-shadow:0 24px 60px -20px rgba(0,0,0,.7);
  padding:16px;
}
.lightbox__caption{
  margin-top:12px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--paper);opacity:.75;
}

/* ============================================================
   RESPONSIVE — mobile-first base; widen from here
   ============================================================ */
@media (min-width:680px){
  .object-label .row{grid-template-columns:9.5em 1fr}
  .storeroom-grid{grid-template-columns:repeat(auto-fill,minmax(172px,1fr))}
}
@media (min-width:1024px){
  .storeroom-grid{grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}
}

/* ============================================================
   MOTION — respect the visitor's setting
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  .marquee__track{animation:none;padding-left:0;white-space:normal}
  .specimen:hover .specimen__mount{transform:none}
  .lightbox{transition:none}
  *{scroll-behavior:auto}
}