/* Scale & Bake: shared styles */
:root {
  --bg: #faf6f0;
  --surface: #ffffff;
  --surface-2: #f4ede4;
  --text: #2b2320;
  --muted: #6b6058;
  --border: #e7ddd1;
  --border-strong: #d4c5b4;
  --accent: #b24a26;
  --accent-hover: #933b1c;
  --accent-soft: #f7e7dd;
  --on-accent: #ffffff;
  --input-bg: #ffffff;
  --warn-bg: #fff3d1;
  --warn-text: #5f4600;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(60, 40, 20, .05), 0 6px 20px rgba(60, 40, 20, .06);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171310;
    --surface: #211c18;
    --surface-2: #2a241f;
    --text: #f2eae2;
    --muted: #b3a597;
    --border: #372f28;
    --border-strong: #4c4239;
    --accent: #e8845d;
    --accent-hover: #f39a76;
    --accent-soft: #35261e;
    --on-accent: #1a110c;
    --input-bg: #1b1714;
    --warn-bg: #3a3017;
    --warn-text: #f1d98f;
    --shadow: none;
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 var(--sans); }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; letter-spacing: -.01em; }
h1 { font-size: clamp(1.9rem, 1.4rem + 2vw, 2.6rem); margin: .25em 0 .3em; }
h2 { font-size: 1.45rem; margin: 2em 0 .5em; }
h3 { font-size: 1.15rem; margin: 1.5em 0 .4em; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }
img, svg { max-width: 100%; }
.wrap { max-width: 840px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; z-index: 10; background: var(--surface); padding: .5rem 1rem; border-radius: 8px; }

/* header & footer */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 62px; }
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; color: var(--text); font: 700 1.15rem/1 var(--serif); }
.brand:hover { color: var(--text); }
.brand svg { color: var(--accent); flex: none; }
.site-nav { display: flex; gap: 1.2rem; font-size: .95rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--text); }
.site-footer { margin-top: 2rem; background: var(--surface); border-top: 1px solid var(--border); color: var(--muted); font-size: .88rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem 1.5rem; padding-top: 1.3rem; padding-bottom: 1.6rem; }
.footer-inner p { margin: 0; max-width: 50ch; }
.footer-inner nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.footer-inner a { color: var(--muted); }

main { padding-top: 1.1rem; padding-bottom: 2rem; }
.crumbs { display: flex; gap: .45rem; font-size: .85rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.lede { max-width: 62ch; margin: 0 0 1.4rem; color: var(--muted); font-size: 1.1rem; }

/* home */
.hero { padding: 1.6rem 0 .4rem; }
.hero h1 { font-size: clamp(2.1rem, 1.5rem + 3vw, 3.1rem); }
.tool-group h2 { margin: 1.8rem 0 .7rem; font-size: 1.15rem; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .75rem; margin: 0; padding: 0; list-style: none; }
.tool-card { display: flex; flex-direction: column; gap: .2rem; height: 100%; padding: 1rem 1.1rem; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--text); text-decoration: none; transition: border-color .15s, transform .15s; }
.tool-card:hover { border-color: var(--accent); color: var(--text); transform: translateY(-1px); }
.tool-card strong { font-size: 1.02rem; }
.tool-card span { color: var(--muted); font-size: .9rem; line-height: 1.4; }
.related { margin-top: 3rem; padding-top: .5rem; border-top: 1px solid var(--border); }
.related h2 { font-size: 1.2rem; margin-top: 1.2rem; }

/* tool card + form controls */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.15rem; }
@media (min-width: 640px) { .card { padding: 1.6rem; } }
.tool-form { display: grid; gap: 1.1rem; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .9rem 1rem; align-items: end; }
.field { display: flex; flex-direction: column; gap: .3rem; min-width: 0; margin: 0; padding: 0; border: 0; }
.field > label, .field > legend, .label { padding: 0; color: var(--muted); font-size: .85rem; font-weight: 600; }
.field small { font-weight: 400; }
input:not([type=checkbox]):not([type=radio]), select, textarea {
  width: 100%; min-width: 0; padding: .55rem .7rem; border: 1px solid var(--border-strong); border-radius: 9px;
  background: var(--input-bg); color: var(--text); font: inherit; font-size: 1rem;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
textarea { resize: vertical; line-height: 1.5; }
fieldset { min-width: 0; margin: 0; padding: 0; border: 0; }
.check { display: flex; align-items: flex-start; gap: .55rem; font-size: .95rem; cursor: pointer; }
.check input { flex: none; width: 1.1rem; height: 1.1rem; margin-top: .22rem; accent-color: var(--accent); }

.seg { display: inline-flex; flex-wrap: wrap; width: fit-content; max-width: 100%; overflow: hidden; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--input-bg); }
.seg input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.seg label { padding: .5rem .95rem; color: var(--text); font-size: .95rem; font-weight: 500; cursor: pointer; user-select: none; }
.seg label + input + label { border-left: 1px solid var(--border-strong); }
.seg input:checked + label { background: var(--accent); color: var(--on-accent); }
.seg input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: -3px; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip { padding: .35rem .85rem; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--input-bg); color: var(--text); font: inherit; font-size: .9rem; cursor: pointer; }
.chip:hover { border-color: var(--accent); }

.btn { display: inline-flex; align-items: center; gap: .4rem; padding: .55rem 1rem; border: 1px solid var(--accent); border-radius: 10px; background: var(--accent); color: var(--on-accent); font: inherit; font-size: .95rem; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn-ghost { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--surface); color: var(--accent); }

/* results */
.result { margin-top: 1.3rem; padding: 1.1rem 1.2rem; border-radius: 12px; background: var(--accent-soft); }
.result:empty { display: none; }
.result > :first-child { margin-top: 0; }
.result > :last-child { margin-bottom: 0; }
.result p { margin: .45rem 0; }
.big { margin: 0; font: 700 clamp(1.55rem, 1.2rem + 2vw, 2.15rem)/1.15 var(--serif); color: var(--text); }
.sub { color: var(--muted); font-size: .95rem; }
.result-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .6rem 1rem; }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .7rem; margin: .9rem 0; }
.kv div { padding: .65rem .8rem; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.kv dt { color: var(--muted); font-size: .8rem; font-weight: 600; }
.kv dd { margin: .1rem 0 0; font-size: 1.15rem; font-weight: 700; line-height: 1.3; }
.kv dd small { display: block; color: var(--muted); font-size: .82rem; font-weight: 400; }
.note { color: var(--muted); font-size: .9rem; }
.warn { padding: .6rem .8rem; border-radius: 8px; background: var(--warn-bg); color: var(--warn-text); font-size: .93rem; }
.scaled { margin: .7rem 0 0; padding: 0; list-style: none; }
.scaled li { padding: .4rem 0; border-bottom: 1px dashed var(--border-strong); }
.scaled li:last-child { border-bottom: 0; }
.scaled .q { font-weight: 700; }
.scaled li.plain { color: var(--muted); }
.timeline { margin: .9rem 0 .2rem .4rem; padding: 0; list-style: none; border-left: 2px solid var(--accent); }
.timeline li { position: relative; padding: 0 0 .9rem 1.1rem; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: .45rem; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.timeline strong { display: block; }

/* two-panel layouts (cake pans) */
.pair { display: grid; gap: 1rem; }
@media (min-width: 720px) { .pair { grid-template-columns: 1fr 1fr; } }
.panel { padding: 1rem; border: 1px solid var(--border); border-radius: 12px; }
.panel > legend { padding: 0 .35rem; font: 700 1.05rem var(--serif); }
.panel .fields { grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); }
.rows { display: grid; gap: .6rem; }
.row { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: .6rem; align-items: center; }
.row > label { font-weight: 600; font-size: .95rem; }
.row.extra { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, .9fr); }

/* prose & tables */
.prose { margin-top: 2.6rem; }
.prose p, .prose li { max-width: 68ch; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin: .35rem 0; }
.table-wrap { overflow-x: auto; margin: 1rem 0; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.result .table-wrap { margin: .8rem 0 0; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { padding: .55rem .8rem; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
thead th { background: var(--surface-2); color: var(--muted); font-size: .78rem; letter-spacing: .04em; text-transform: uppercase; }
tbody tr:last-child > * { border-bottom: 0; }
tbody th { font-weight: 500; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.group th { background: var(--surface-2); font: 700 .95rem var(--serif); }
details { padding: .85rem 0; border-bottom: 1px solid var(--border); }
details summary { font-weight: 600; cursor: pointer; }
details p { margin: .5rem 0 0; }
.sources { color: var(--muted); font-size: .9rem; }
[hidden] { display: none !important; }