/* Sonokinetic demo page.
 *
 * Same design brief as the application: a lab instrument that could sit open
 * on a desk during a meeting. Paper ground, near-black text, one ink accent,
 * monospace reserved for numbers where tabular alignment does actual work.
 */

:root {
  --paper:    #f7f6f3;
  --card:     #ffffff;
  --sunken:   #f1efea;
  --rule:     #ddd8cf;
  --rule-soft:#e9e5dd;

  --ink:      #1e1c1a;
  --ink-2:    #4a4640;
  --ink-3:    #7c766c;

  --accent:   #2c5f7c;
  --accent-w: #eaf1f5;
  --warm:     #9a5b2d;
  --warm-w:   #f8efe6;
  --flag:     #a33a2a;

  --dot:      44, 95, 124;      /* accent as rgb, for the monitor */
  --grid:     #e6e2d9;
  --headline: #b8b1a5;

  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --r: 3px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:    #171614;
    --card:     #201e1b;
    --sunken:   #262320;
    --rule:     #3a3630;
    --rule-soft:#302c27;

    --ink:      #ece8e1;
    --ink-2:    #bab5ab;
    --ink-3:    #8e887d;

    --accent:   #7fb4d0;
    --accent-w: #1e2b33;
    --warm:     #d08f5c;
    --warm-w:   #2e241b;
    --flag:     #e0705c;

    --dot:      127, 180, 208;
    --grid:     #332f2a;
    --headline: #4d4841;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.6 var(--sans);
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 22px; }

h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: 19px; }
h2 { font-size: 14px; margin-bottom: 9px; }
p  { margin: 0 0 12px; }
a  { color: var(--accent); }
.dim { color: var(--ink-3); }
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
code { font-family: var(--mono); font-size: 0.9em; }

/* ---- header ---------------------------------------------------------- */

header {
  background: var(--card);
  border-bottom: 1px solid var(--rule);
  padding: 15px 0;
  margin-bottom: 26px;
}
.hrow { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; }
.hrow .sub { margin: 3px 0 0; color: var(--ink-2); font-size: 14px; }
header nav { margin-left: auto; display: flex; gap: 16px; font-size: 13px; }

/* ---- intro ----------------------------------------------------------- */

.intro { max-width: 68ch; }
.intro p { color: var(--ink-2); }

.callout {
  margin: 16px 0 0;
  padding: 11px 14px;
  background: var(--warm-w);
  border-left: 2px solid var(--warm);
  border-radius: 0 var(--r) var(--r) 0;
  font-size: 13.5px;
  color: var(--ink-2);
}
.callout strong { color: var(--ink); }

/* ---- material picker ------------------------------------------------- */

.bedpick { margin: 28px 0 20px; }
.bedpick .lbl {
  display: block; font-size: 12px; color: var(--ink-3);
  margin-bottom: 6px;
}
.segmented { display: inline-flex; border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden; }
.segmented button {
  font: inherit; font-size: 13px; padding: 6px 15px;
  background: var(--card); color: var(--ink-2);
  border: 0; border-right: 1px solid var(--rule); cursor: pointer;
}
.segmented button:last-child { border-right: 0; }
.segmented button[aria-pressed="true"] { background: var(--accent); color: #fff; }
@media (prefers-color-scheme: dark) {
  .segmented button[aria-pressed="true"] { color: #12181c; }
}
.bedblurb { margin: 8px 0 0; font-size: 13px; color: var(--ink-3); max-width: 62ch; }

/* ---- bench ----------------------------------------------------------- */

.bench {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 26px;
  align-items: start;
  padding: 18px 0 6px;
  border-top: 1px solid var(--rule-soft);
}

.variants { list-style: none; margin: 0; padding: 0; }
.variants li { margin-bottom: 5px; }
.variants button {
  width: 100%; text-align: left; font: inherit; cursor: pointer;
  background: var(--card); color: var(--ink);
  border: 1px solid var(--rule); border-radius: var(--r);
  padding: 8px 11px;
  display: flex; align-items: baseline; gap: 10px;
}
.variants button:hover { border-color: var(--ink-3); }
.variants button[aria-pressed="true"] {
  border-color: var(--accent); background: var(--accent-w);
  box-shadow: inset 2px 0 0 var(--accent);
}
.variants .key {
  font-family: var(--mono); font-size: 11px; color: var(--ink-3);
  border: 1px solid var(--rule); border-radius: 2px;
  padding: 0 4px; flex: none;
}
.variants button[aria-pressed="true"] .key { color: var(--accent); border-color: var(--accent); }
.variants .vname { font-weight: 500; font-size: 13.5px; }
.variants .vshort { display: block; color: var(--ink-3); font-size: 12.5px; margin-top: 1px; }
.variants .vmeta { margin-left: auto; font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); flex: none; }

/* ---- monitor --------------------------------------------------------- */

.col-monitor { position: sticky; top: 16px; }
#ring {
  display: block; width: 100%; max-width: 340px; height: auto;
  background: var(--card); border: 1px solid var(--rule-soft);
  border-radius: var(--r);
}
.legend { font-size: 12px; color: var(--ink-3); margin: 8px 0 0; }

.transport { display: flex; gap: 10px; align-items: center; margin-top: 12px; }
.transport input[type=range] { flex: 1; min-width: 0; accent-color: var(--accent); }
.clock { font-size: 12px; color: var(--ink-3); flex: none; }
button.primary {
  font: inherit; font-size: 13px; padding: 6px 16px; cursor: pointer;
  background: var(--accent); color: #fff; border: 0; border-radius: var(--r);
  flex: none; min-width: 74px;
}
@media (prefers-color-scheme: dark) { button.primary { color: #12181c; } }
button.primary:disabled { opacity: 0.5; cursor: default; }

.loading { font-size: 12px; color: var(--ink-3); margin: 8px 0 0; }

.readout { margin-top: 12px; }
.readout table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.readout td { padding: 3px 4px; border-bottom: 1px solid var(--rule-soft); }
.readout td:first-child { color: var(--ink-3); width: 52%; }
.readout td:last-child { font-family: var(--mono); font-size: 12px; text-align: right; }

/* ---- prose sections -------------------------------------------------- */

.explain {
  margin: 22px 0 0; padding: 15px 17px;
  background: var(--sunken); border-radius: var(--r);
  max-width: 74ch;
}
.explain h2 { font-size: 14px; margin-bottom: 6px; }
.explain p { margin: 0; color: var(--ink-2); font-size: 13.5px; }

.limits { margin: 34px 0 0; max-width: 74ch; }
.limits p { color: var(--ink-2); font-size: 13.5px; }

footer {
  margin: 40px 0 30px; padding-top: 16px;
  border-top: 1px solid var(--rule-soft);
  font-size: 12.5px;
}
footer p { margin: 0 0 5px; }

/* ---- narrow ---------------------------------------------------------- */

@media (max-width: 760px) {
  .bench { grid-template-columns: 1fr; }
  .col-monitor { position: static; order: -1; }
  #ring { margin: 0 auto; }
  .variants .vmeta { display: none; }
}