/* Shared styles for the interactive explainer pages
   (multitasking, time perception, AI in education).
   Same design language as prims.html: a reading column, figures with controls, short captions. */

[hidden] { display: none !important; }
:root {
  --bg: #ffffff; --surface: #ffffff; --surface-2: #f8f4f2; --ink: #1d1b1a; --muted: #625b57; --line: #ddd5d0;
  --hot: #dc002d; --hot-dark: #a8001f; --hot-soft: rgba(220, 0, 45, .11);
  --c1: #2f6bd0; --c2: #b86e00; --c3: #23825a; --c4: #7348c4; --c5: #16807f; --c6: #c2255c;
  --good: #23825a; --warn: #b86e00; --bad: #c2255c;
  --display: "Iowan Old Style", "Charter", Georgia, Cambria, serif;
  --body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
body { background: var(--bg); color: var(--ink); font: 16px/1.6 var(--body); margin: 0; }
img { max-width: 100%; height: auto; }
.wrap { max-width: 1060px; margin: 0 auto; padding: 40px 20px 8px; }
.prose { max-width: 68ch; }
h1, h2, h3 { font-family: var(--display); text-wrap: balance; margin: 0; font-weight: 600; }
h1 { font-size: clamp(2rem, 4.2vw, 3rem); line-height: 1.1; }
h2 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); line-height: 1.2; }
h3 { font-size: 1.1rem; }
p { margin: 0; }
a { color: var(--hot-dark); }
code, .mono { font-family: var(--mono); font-size: .92em; }
.eyebrow { font: 600 .76rem/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
header.top { display: grid; gap: 16px; margin-bottom: 30px; border-bottom: 1px solid var(--line); padding-bottom: 26px; }
.lede { font-size: 1.12rem; }

section.panel { margin-top: 54px; display: grid; gap: 16px; }
.panel .intro { display: grid; gap: 10px; }
.figure { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.figscroll { overflow-x: auto; }
.figscroll svg { display: block; width: 100%; height: auto; }
.pad { padding: 16px 18px; }
.takeaway { border-left: 3px solid var(--hot); padding: 2px 0 2px 14px; max-width: 72ch; font-weight: 500; }
.note { font-size: .88rem; color: var(--muted); max-width: 76ch; }

/* controls */
.bar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--surface-2); }
.bar.top { border-top: 0; border-bottom: 1px solid var(--line); }
.bar label { font: 600 .84rem var(--body); color: var(--ink); display: inline-flex; align-items: center; gap: 8px; }
.bar select, .bar input[type=number] { font: 500 .9rem var(--body); padding: 6px 8px; border: 1px solid var(--line); border-radius: 5px; background: #fff; color: var(--ink); }
.bar input[type=range] { accent-color: var(--hot); width: 170px; }
.bar .val { font: 500 .85rem var(--mono); min-width: 4.2em; color: var(--hot-dark); }
.btn { font: 600 .88rem var(--body); color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 5px; padding: 7px 14px; cursor: pointer; }
.btn:hover { border-color: var(--ink); }
.btn.primary { background: var(--hot); border-color: var(--hot); color: #fff; }
.btn.primary:hover { background: var(--hot-dark); border-color: var(--hot-dark); }
.btn:focus-visible, select:focus-visible, input:focus-visible { outline: 2px solid var(--hot); outline-offset: 2px; }
.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #fff; }
.seg button { font: 600 .86rem var(--body); color: var(--ink); background: transparent; border: 0; border-right: 1px solid var(--line); padding: 8px 12px; cursor: pointer; }
.seg button:last-child { border-right: 0; }
.seg button[aria-pressed="true"] { background: var(--ink); color: #fff; }
.seg button:focus-visible { outline: 2px solid var(--hot); outline-offset: -2px; }

.readout { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; padding: 14px 16px; border-top: 1px solid var(--line); }
.stat { border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; background: #fff; }
.stat b { display: block; font: 600 1.35rem/1.2 var(--display); }
.stat span { font-size: .8rem; color: var(--muted); }
.stat.hot b { color: var(--hot-dark); }
.caption { padding: 14px 16px 16px; border-top: 1px solid var(--line); max-width: 80ch; min-height: 3.4em; }

.swatches { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .82rem; color: var(--muted); padding: 10px 16px; border-top: 1px solid var(--line); }
.swatches i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }

table.grid { border-collapse: collapse; font-size: .88rem; }
table.grid th, table.grid td { border: 1px solid var(--line); padding: 5px 9px; text-align: center; }
table.grid th { background: var(--surface-2); font-weight: 600; }
table.grid td.l, table.grid th.l { text-align: left; }

.cols2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
@media (max-width: 760px) { .cols2 { grid-template-columns: 1fr; } }
.figs { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; align-items: start; }
figure.shot { margin: 0; }
figure.shot img { display: block; border: 1px solid var(--line); border-radius: 6px; }
figure.shot figcaption { font-size: .85rem; color: var(--muted); margin-top: 6px; }
.ref { font-size: .94rem; padding-left: 1.6em; text-indent: -1.6em; margin: 0 0 .5em; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font: 500 .8rem/1 var(--mono); padding: 6px 8px; border-radius: 4px; border: 1px solid var(--line); background: #fff; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }