/* ==========================================================================
   Batten Studio — portfolio site
   Structure: fixed left identity rail + right exhibit column.
   Deliberately NOT the facet skeleton (floating pill nav, centred hero).
   Print rules live in print.css. Never add @media print here — it poisons
   the contrast pass. See .impeccable/README.md.
   ========================================================================== */

:root {
  --paper:        #eef0f2;
  --paper-raised: #e4e8ea;
  --paper-line:   #cbd3d8;
  --ink:          #1b2024;
  --ink-soft:     #3a444b;
  --ink-muted:    #59636b;
  --accent:       #23508f;
  --accent-soft:  #dbe5f3;

  --f-display: 'Big Shoulders Condensed', 'Arial Narrow', sans-serif;
  --f-body:    'Archivo', system-ui, sans-serif;
  --f-mono:    'IBM Plex Mono', Consolas, monospace;

  --rail: 268px;
  --step: 8px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper:        #131719;
    --paper-raised: #1b2024;
    --paper-line:   #2a3238;
    --ink:          #eef0f2;
    --ink-soft:     #c3ccd2;
    --ink-muted:    #939da4;
    --accent:       #7cabe6;
    --accent-soft:  #1e2c3d;
  }
}
:root[data-theme="dark"] {
  --paper:        #131719;
  --paper-raised: #1b2024;
  --paper-line:   #2a3238;
  --ink:          #eef0f2;
  --ink-soft:     #c3ccd2;
  --ink-muted:    #939da4;
  --accent:       #7cabe6;
  --accent-soft:  #1e2c3d;
}

* { box-sizing: border-box; }

html { background: #eef0f2; }
:root[data-theme="dark"] html { background: #131719; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--ink); color: var(--paper);
  padding: 12px 20px; z-index: 100;
  font-family: var(--f-mono); font-size: 13px;
}
.skip:focus { left: 16px; top: 16px; }

/* ---------- layout shell ---------- */

/* minmax(0,1fr) not 1fr: a bare 1fr track keeps min-width:auto and is forced
   wider than the viewport by its longest child, overflowing the whole page. */
.shell { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); }
.shell > * { min-width: 0; }

.rail {
  position: sticky; top: 0; align-self: start;
  height: 100vh;
  border-right: 1px solid var(--paper-line);
  padding: 32px 28px;
  display: flex; flex-direction: column; gap: 32px;
  overflow-y: auto;
}

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.brand svg { width: 30px; height: 30px; flex: none; }
.brand .n { font-family: var(--f-display); font-weight: 800; font-size: 25px; line-height: 1; letter-spacing: .01em; }
.brand .s { font-family: var(--f-mono); font-size: 11px; letter-spacing: .2em; color: var(--ink-muted); display: block; margin-top: 3px; }

.rail nav { display: flex; flex-direction: column; }
.rail nav a {
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em;
  color: var(--ink-muted); text-decoration: none;
  padding: 13px 0; border-top: 1px solid var(--paper-line);
  display: flex; justify-content: space-between; align-items: center;
  min-height: 48px;
}
.rail nav a:last-child { border-bottom: 1px solid var(--paper-line); }
.rail nav a:hover, .rail nav a[aria-current="page"] { color: var(--ink); }
.rail nav a[aria-current="page"] span { color: var(--accent); }

.rail .contact { margin-top: auto; font-family: var(--f-mono); font-size: 11.5px; line-height: 1.9; color: var(--ink-muted); }
.rail .contact b { display: block; color: var(--ink); letter-spacing: .14em; font-weight: 500; margin-bottom: 6px; }
.rail .contact a { color: var(--ink); word-break: break-all; text-decoration: none; border-bottom: 1px solid var(--accent); }

.themetoggle {
  background: none; border: 1px solid var(--paper-line); color: var(--ink-muted);
  font-family: var(--f-mono); font-size: 11px; letter-spacing: .14em;
  padding: 0 14px; min-height: 48px; cursor: pointer; width: 100%;
}
.themetoggle:hover { color: var(--ink); border-color: var(--ink-muted); }

/* ---------- content column ---------- */

main { padding: 0 clamp(24px, 4vw, 64px) 120px; max-width: 1180px; }

.titleblock {
  display: flex; justify-content: space-between; align-items: flex-end;
  gap: 24px; flex-wrap: wrap;
  padding: 40px 0 18px; margin-bottom: 56px;
  border-bottom: 2px solid var(--ink);
}
.titleblock h1 {
  font-family: var(--f-display); font-weight: 800;
  font-size: clamp(40px, 6vw, 68px); line-height: .95; margin: 0;
  letter-spacing: .005em; text-wrap: balance; max-width: 15ch;
}
.titleblock .rev {
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .035em;
  color: var(--ink-muted); text-align: right; line-height: 1.9;
}
.titleblock .rev b { color: var(--ink); font-weight: 500; }

.lede { font-size: 18px; line-height: 1.65; color: var(--ink-soft); max-width: 62ch; }
.lede + .lede { margin-top: 18px; }

.sec { margin-top: 88px; }
.sec-label {
  display: flex; align-items: baseline; gap: 14px;
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .035em;
  color: var(--ink-muted); margin-bottom: 26px;
}
.sec-label b { color: var(--ink); font-weight: 500; }
.sec-label::after { content: ""; flex: 1; height: 1px; background: var(--paper-line); }

/* ---------- exhibits ---------- */

.exhibits { display: grid; gap: 40px; }
.ex { border: 1px solid var(--paper-line); background: var(--paper-raised); padding: 14px; }
.ex figure { margin: 0; }
.ex img { border: 1px solid var(--paper-line); }
.ex figcaption {
  padding: 16px 6px 4px; display: flex; gap: 18px; align-items: baseline;
  flex-wrap: wrap;
}
.ex .no { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; color: var(--accent); flex: none; }
.ex .cap { font-size: 14.5px; color: var(--ink-soft); }
.ex .cap b { color: var(--ink); font-weight: 600; }

@media (min-width: 900px) { .exhibits.two { grid-template-columns: 1fr 1fr; } }

/* ---------- spec table ---------- */

.spec { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.spec th, .spec td { text-align: left; padding: 13px 0; border-bottom: 1px solid var(--paper-line); vertical-align: top; }
.spec th {
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .035em;
  color: var(--ink-muted); font-weight: 500; width: 190px; padding-right: 24px;
}
.spec td { color: var(--ink-soft); }
.tablewrap { overflow-x: auto; }

/* ---------- work index ---------- */

.work { display: grid; gap: 2px; background: var(--paper-line); border: 1px solid var(--paper-line); }
.workrow {
  background: var(--paper); padding: 26px 24px;
  display: grid; grid-template-columns: 62px 1fr auto; gap: 24px; align-items: center;
  text-decoration: none; color: var(--ink); min-height: 48px;
}
.workrow:hover { background: var(--paper-raised); }
.workrow .idx { font-family: var(--f-mono); font-size: 12px; color: var(--accent); }
.workrow h3 { font-family: var(--f-display); font-weight: 800; font-size: 30px; margin: 0 0 4px; line-height: 1; }
.workrow p { margin: 0; font-size: 14.5px; color: var(--ink-muted); }
.workrow .go { font-family: var(--f-mono); font-size: 12px; letter-spacing: .1em; color: var(--ink-muted); }
@media (max-width: 620px) { .workrow { grid-template-columns: 1fr; gap: 10px; } }

/* ---------- notes ---------- */

.notes { display: grid; gap: 0; }
.note { display: grid; grid-template-columns: 150px 1fr; gap: 24px; padding: 18px 0; border-top: 1px solid var(--paper-line); }
.note dt { font-family: var(--f-mono); font-size: 12px; letter-spacing: .035em; color: var(--ink-muted); }
.note dd { margin: 0; font-size: 15px; color: var(--ink-soft); max-width: 60ch; }
@media (max-width: 620px) { .note { grid-template-columns: 1fr; gap: 6px; } }

/* ---------- footer ---------- */

footer {
  margin-top: 96px; padding-top: 22px; border-top: 2px solid var(--ink);
  font-family: var(--f-mono); font-size: 12px; letter-spacing: .035em;
  color: var(--ink-muted);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
footer a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--accent); }

/* ---------- mobile ---------- */

@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .rail {
    position: static; height: auto; border-right: 0;
    border-bottom: 1px solid var(--paper-line);
    flex-direction: row; flex-wrap: wrap; align-items: center; gap: 18px;
    padding: 20px clamp(24px, 4vw, 64px);
  }
  .rail nav { flex-direction: row; flex-wrap: wrap; gap: 0 20px; flex-basis: 100%; min-width: 0; }
  .rail nav a { border: 0; padding: 8px 0; }
  .rail nav a:last-child { border: 0; }
  .rail nav a span { display: none; }
  .rail .contact { margin: 0; width: 100%; }
  .themetoggle { width: auto; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}