/* ════════════════════════════════════════════════════════════════════════════
   SDT SITE SHELL — three menus, same on every screen.
   J. C. Harvey, Melbourne.

     LEFT   vertical COLUMN  — Navigation (the medium, six laws, topology, …)
     RIGHT  vertical COLUMN  — Scrollers (scrollthroughs, sequencer, lab)
     TOP    bar              — Settings

   Collapse:  ≤1080px  → three buttons [Navigation] [Settings] [Scrollers]
              ≤600px   → three hamburgers on a row below "S.D.T."

   Palette inherited from style.css (--paper / --ink / --copper).
   ════════════════════════════════════════════════════════════════════════════ */

:root {
  --sdtq-off: 20px;          /* distance off the side of the screen */
  --sdtq-col: 208px;         /* column width */
  --sdtq-top: 46px;          /* settings bar height */
}

/* fallbacks so the shell also works on pages that don't load style.css */
.sdtq {
  --sq-paper: var(--paper, #faf6ef);
  --sq-edge: var(--paper-edge, #e8e0d2);
  --sq-ink: var(--ink, #1e1c18);
  --sq-muted: var(--ink-muted, #7a7265);
  --sq-faint: var(--ink-faint, #a49d92);
  --sq-copper: var(--copper, #b07430);
  --sq-glow: var(--copper-glow, rgba(176, 116, 48, .12));
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  color: var(--sq-ink);
}

.sdtq, .sdtq * { box-sizing: border-box; }
.sdtq a { text-decoration: none; color: inherit; }
.sdtq button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* the legacy horizontal nav row is replaced by the left column */
.nav { display: none !important; }

/* ── TOP: settings bar ───────────────────────────────────────────────────── */
.sdtq-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9000;
  min-height: var(--sdtq-top);
  display: flex; align-items: center; gap: 1.25rem;
  padding: 0 var(--sdtq-off);
  background: rgba(250, 246, 239, .93);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sq-edge);
}
.sdtq-brand {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: .8125rem; font-weight: 600; letter-spacing: .18em;
  text-transform: uppercase; white-space: nowrap;
}
.sdtq-brand span { color: var(--sq-copper); }

/* ── search ──────────────────────────────────────────────────────────────── */
.sdtq-search { position: relative; margin-left: auto; }
.sdtq-search input {
  width: 15rem; padding: .32rem .6rem .32rem 1.7rem;
  border: 1px solid var(--sq-edge); border-radius: 3px;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%237a7265' stroke-width='1.5'%3E%3Ccircle cx='7' cy='7' r='4.5'/%3E%3Cpath d='M10.5 10.5L14 14'/%3E%3C/svg%3E") no-repeat .45rem center;
  background-size: 13px; font: inherit; font-size: .8125rem; color: var(--sq-ink);
}
.sdtq-search input::placeholder { color: var(--sq-faint); }
.sdtq-search input:focus { outline: none; border-color: var(--sq-copper); }
.sdtq-results {
  display: none; position: absolute; top: calc(100% + .4rem); right: 0;
  width: min(30rem, calc(100vw - 2rem)); max-height: 62vh; overflow-y: auto;
  background: var(--sq-paper); border: 1px solid var(--sq-edge); border-radius: 3px;
  box-shadow: 0 10px 40px rgba(30, 28, 24, .18); padding: .4rem; z-index: 9100;
}
.sdtq-results.sdtq-open { display: block; }
.sdtq-results a { display: block; padding: .5rem .6rem; border-radius: 2px; border-left: 2px solid transparent; }
.sdtq-results a:hover, .sdtq-results a.sel { background: var(--sq-glow); border-left-color: var(--sq-copper); }
.sdtq-results .rt { display: block; font-family: 'Source Serif 4', Georgia, serif;
  font-size: .9375rem; color: var(--sq-ink); }
.sdtq-results .rs { display: block; font-size: .75rem; color: var(--sq-muted); line-height: 1.5; margin-top: .12rem; }
.sdtq-results .rs mark { background: rgba(176, 116, 48, .28); color: inherit; padding: 0 .1em; }
.sdtq-results .rnone { padding: .8rem .6rem; font-size: .8125rem; color: var(--sq-muted); }

.sdtq-settings { display: flex; align-items: center; gap: 1.25rem; }
.sdtq-settings label {
  display: flex; align-items: center; gap: .45rem;
  font-size: .6875rem; letter-spacing: .09em; text-transform: uppercase;
  color: var(--sq-muted);
}
.sdtq-seg { display: flex; border: 1px solid var(--sq-edge); border-radius: 4px; overflow: hidden; }
.sdtq-seg button {
  padding: .2rem .5rem; font-size: .6875rem; letter-spacing: .05em;
  color: var(--sq-muted); background: #fff; transition: all var(--dur-fast, .2s);
}
.sdtq-seg button + button { border-left: 1px solid var(--sq-edge); }
.sdtq-seg button[aria-pressed="true"] { background: var(--sq-copper); color: #fff; }

/* ── LEFT + RIGHT: the two vertical columns ──────────────────────────────── */
.sdtq-column {
  position: fixed;
  top: calc(var(--sdtq-top) + var(--sdtq-off));
  bottom: var(--sdtq-off);
  width: var(--sdtq-col);
  z-index: 8900;
  display: flex;              /* ← a COLUMN: items stack vertically */
  flex-direction: column;
  gap: 1px;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: .75rem .6rem 1.25rem;
  background: rgba(250, 246, 239, .82);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border: 1px solid var(--sq-edge);
  border-radius: 3px;
  scrollbar-width: thin;
}
.sdtq-column::-webkit-scrollbar { width: 6px; }
.sdtq-column::-webkit-scrollbar-thumb { background: var(--sq-whisper, #c8c1b6); border-radius: 3px; }

.sdtq-left  { left:  var(--sdtq-off); }
.sdtq-right { right: var(--sdtq-off); }

.sdtq-column h2 {
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: .6875rem; font-weight: 600; letter-spacing: .16em;
  text-transform: uppercase; color: var(--sq-copper);
  margin: 0 0 .5rem; padding-bottom: .5rem;
  border-bottom: 1px solid var(--sq-edge);
}
.sdtq-column h3 {
  font-size: .625rem; font-weight: 600; letter-spacing: .13em;
  text-transform: uppercase; color: var(--sq-faint);
  margin: .9rem 0 .3rem; padding: 0 .4rem;
}
.sdtq-column h3:first-of-type { margin-top: .15rem; }

/* one link per line — the vertical stack */
.sdtq-column a {
  display: block;
  padding: .34rem .45rem;
  font-size: .75rem; letter-spacing: .04em;
  color: var(--sq-muted);
  border-left: 2px solid transparent;
  border-radius: 2px;
  transition: color var(--dur-fast, .2s), background var(--dur-fast, .2s);
}
.sdtq-column a:hover { color: var(--sq-ink); background: var(--sq-glow); border-left-color: var(--sq-copper); }
.sdtq-column a[aria-current="page"],
.sdtq-column a.sdtq-active {
  color: var(--sq-ink); font-weight: 600;
  background: var(--sq-glow); border-left-color: var(--sq-copper);
}

.sdtq-close {
  display: none;
  position: absolute; top: .5rem; right: .5rem;
  width: 26px; height: 26px; border: 1px solid var(--sq-edge); border-radius: 3px;
  background: #fff; font-size: 1rem; line-height: 1;
}

/* ── collapsed triggers ──────────────────────────────────────────────────── */
.sdtq-tabs { display: none; align-items: center; gap: .5rem; margin-left: auto; }
.sdtq-tabs button {
  padding: .35rem .7rem; border: 1px solid var(--sq-edge); border-radius: 3px;
  background: #fff; font-size: .6875rem; letter-spacing: .09em; text-transform: uppercase;
  color: var(--sq-muted);
}
.sdtq-tabs button[aria-expanded="true"] {
  background: var(--sq-copper); border-color: var(--sq-copper); color: #fff;
}

.sdtq-burgers { display: none; gap: .9rem; width: 100%; justify-content: center; padding: 0 0 .55rem; }
.sdtq-burgers button {
  width: 48px; height: 34px; border: 1px solid var(--sq-edge); border-radius: 3px;
  background: #fff; display: grid; place-content: center; gap: 4px;
}
.sdtq-burgers button i { display: block; width: 18px; height: 1.5px; background: var(--sq-ink); }
.sdtq-burgers button[aria-expanded="true"] { background: var(--sq-copper); border-color: var(--sq-copper); }
.sdtq-burgers button[aria-expanded="true"] i { background: #fff; }

/* keep page content clear of the columns on wide screens */
@media (min-width: 1081px) {
  body { padding-top: var(--sdtq-top); }
}

/* ── MEDIUM: three buttons ───────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .sdtq-settings { display: none; }
  .sdtq-tabs { display: flex; }
  .sdtq-search { margin-left: 1rem; }
  .sdtq-search input { width: 9rem; }
  body { padding-top: var(--sdtq-top); }

  .sdtq-column, .sdtq-panel {
    display: none;
    top: calc(var(--sdtq-top) + .5rem);
    bottom: auto;
    max-height: calc(100vh - var(--sdtq-top) - 1.5rem);
    width: min(330px, calc(100vw - 1.5rem));
    box-shadow: 0 10px 40px rgba(30, 28, 24, .16);
  }
  .sdtq-column.sdtq-open, .sdtq-panel.sdtq-open { display: flex; }
  .sdtq-close { display: grid; place-content: center; }

  .sdtq-panel {
    position: fixed; z-index: 8900;
    left: 50%; transform: translateX(-50%);
    flex-direction: column; gap: 1rem;
    padding: 1.1rem;
    background: rgba(250, 246, 239, .96);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--sq-edge); border-radius: 3px;
  }
  .sdtq-panel .sdtq-settings {
    display: flex; flex-direction: column; align-items: stretch;
    gap: .9rem; margin: 0;
  }
  .sdtq-panel .sdtq-settings label { justify-content: space-between; }
}

/* ── SMALL PHONE: three hamburgers below "S.D.T." ────────────────────────── */
@media (max-width: 600px) {
  .sdtq-bar { flex-wrap: wrap; padding: .5rem .75rem 0; row-gap: .4rem; }
  .sdtq-brand { width: 100%; text-align: center; font-size: .9375rem; }
  .sdtq-tabs { display: none; }
  .sdtq-burgers { display: flex; }
  .sdtq-search { order: 3; width: 100%; margin: 0 0 .5rem; }
  .sdtq-search input { width: 100%; }
  .sdtq-results { right: auto; left: 0; width: 100%; }
  body { padding-top: 140px; }
  .sdtq-column, .sdtq-panel { top: 144px; max-height: calc(100vh - 156px); }
}

/* reduced motion */
html[data-sdt-motion="off"] *,
html[data-sdt-motion="off"] *::before,
html[data-sdt-motion="off"] *::after {
  animation: none !important; transition: none !important; scroll-behavior: auto !important;
}

@media print { .sdtq { display: none !important; } body { padding-top: 0 !important; } }