/* Kitson Workshop: shared styles for every page. */
:root {
  --paper: #F4F7F6;
  --surface: #FFFFFF;
  --ink: #1B2A31;
  --muted: #55666D;
  --grid: #DCE5E2;
  --rule: #C7D3CF;
  --accent: #0E8A6A;
  --accent-ink: #FFFFFF;
  --tag: #E3F1EC;
  --note: #FFF7D6;
  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1719; --surface: #162126; --ink: #E3ECE9; --muted: #9DB0AA;
    --grid: #1C2A2F; --rule: #2B3B40; --accent: #3CC79B; --accent-ink: #0B1513; --tag: #1B3A33; --note: #2E2A18;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1719; --surface: #162126; --ink: #E3ECE9; --muted: #9DB0AA;
  --grid: #1C2A2F; --rule: #2B3B40; --accent: #3CC79B; --accent-ink: #0B1513; --tag: #1B3A33; --note: #2E2A18;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px); }
body {
  margin: 0;
  padding-inline: 20px;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
}
img { max-width: 100%; display: block; }
a { color: var(--accent); }
a:focus-visible, .btn:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
.wrap { max-width: 1040px; margin: 0 auto; }

header.top {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px;
  padding-block: 28px 12px;
}
.brand { font: 700 22px/1 var(--font-display); letter-spacing: -0.01em; color: var(--ink); text-decoration: none; }
.brand span { color: var(--accent); }
nav.links { display: flex; flex-wrap: wrap; gap: 8px 20px; font-weight: 600; }
nav.links a { color: var(--muted); text-decoration: none; }
nav.links a:hover, nav.links a[aria-current="page"] { color: var(--ink); }

.intro { padding-block: 40px 36px; max-width: 40rem; }
.intro h1 {
  font: 700 clamp(34px, 6vw, 58px)/1.05 var(--font-display);
  letter-spacing: -0.025em; margin: 0 0 16px; text-wrap: balance;
}
.intro h1 em { font-style: normal; color: var(--accent); }
.intro p { margin: 0; color: var(--muted); font-size: 19px; }

h2 { font: 700 28px/1.2 var(--font-display); letter-spacing: -0.015em; margin: 0; text-wrap: balance; }
.section-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 20px; padding-block: 12px 18px; border-bottom: 2px solid var(--ink); }
.section-head p { margin: 0; color: var(--muted); }
section { padding-block: 28px 44px; }

/* Products */
.product {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 28px;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 10px;
  padding: 20px; margin-top: 24px;
}
.product img { border-radius: 6px; width: 100%; height: auto; }
.product h3 { font: 700 26px/1.15 var(--font-display); margin: 0 0 10px; text-wrap: balance; }
.product ul { margin: 0 0 18px; padding-left: 20px; }
.product li + li { margin-top: 4px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.tag { background: var(--tag); color: var(--ink); font-size: 14px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.buy { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; padding-top: 16px; border-top: 1px dashed var(--rule); }
.price { font: 500 30px/1 var(--font-mono); font-variant-numeric: tabular-nums; }
.price small { font-size: 14px; color: var(--muted); font-family: var(--font-body); margin-left: 6px; }
.btn {
  display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; cursor: pointer;
  font: 600 17px/1.2 var(--font-body); padding: 12px 22px; border-radius: 8px; text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.alt { font-weight: 600; }
.fine { color: var(--muted); font-size: 14px; margin: 10px 0 0; }

.ledger { margin: 20px 0 0; padding: 0; list-style: none; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; }
.ledger li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: baseline; padding: 14px 20px; }
.ledger li + li { border-top: 1px solid var(--rule); }
.ledger .what { font-weight: 600; }
.ledger .kind { display: block; color: var(--muted); font-size: 15px; font-weight: 400; }
.ledger .status { font: 500 13px/1 var(--font-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); white-space: nowrap; }
.ledger a.what { color: var(--ink); text-decoration: none; }
.ledger a.what:hover { color: var(--accent); }

/* Cards (services, tools, posts) */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 24px; }
.card { background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 18px 20px; display: flex; flex-direction: column; gap: 6px; }
.card h3 { font: 700 19px/1.25 var(--font-display); margin: 0; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--accent); }
.card p { margin: 0; color: var(--muted); }
.card .from { margin-top: auto; padding-top: 10px; font: 500 16px/1 var(--font-mono); font-variant-numeric: tabular-nums; color: var(--ink); }
.panel { margin-top: 20px; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 18px 20px; }
.panel p { margin: 0; }
.panel p + p { margin-top: 8px; }

/* Articles */
.article { max-width: 44rem; padding-block: 36px 48px; }
.article h1 { font: 700 clamp(32px, 5vw, 48px)/1.1 var(--font-display); letter-spacing: -0.02em; margin: 0 0 12px; text-wrap: balance; }
.article .byline { color: var(--muted); font-size: 15px; margin: 0 0 28px; }
.article h2 { font-size: 26px; margin: 36px 0 10px; }
.article h3 { font: 700 20px/1.3 var(--font-display); margin: 24px 0 6px; }
.article p, .article ul, .article ol { margin: 0 0 16px; }
.article li + li { margin-top: 4px; }
.table-wrap { overflow-x: auto; margin: 0 0 18px; background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 16px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-weight: 600; background: var(--tag); }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.note { background: var(--note); border-radius: 8px; padding: 12px 16px; margin: 0 0 18px; }
.cta { background: var(--surface); border: 2px solid var(--accent); border-radius: 10px; padding: 18px 20px; margin: 28px 0 0; }
.cta p { margin: 0 0 12px; }

/* Calculator */
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 24px; margin-top: 24px; }
.calc form { background: var(--surface); border: 1px solid var(--rule); border-radius: 10px; padding: 20px; display: grid; gap: 14px; align-content: start; }
.field { display: grid; gap: 4px; }
.field label { font-weight: 600; }
.field input, .field select {
  font: 500 18px/1.2 var(--font-mono); padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--rule); background: var(--paper); color: var(--ink); width: 100%;
}
.field .hint { color: var(--muted); font-size: 14px; }
.mode { display: flex; flex-wrap: wrap; gap: 8px; }
.mode label { display: flex; align-items: center; gap: 6px; font-weight: 600; background: var(--tag); padding: 6px 12px; border-radius: 999px; cursor: pointer; }

footer { border-top: 2px solid var(--ink); padding-block: 18px 40px; color: var(--muted); font-size: 15px; display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; }

@media (max-width: 720px) {
  .product, .calc { grid-template-columns: 1fr; }
  body { font-size: 16px; }
}
@media (prefers-reduced-motion: no-preference) {
  .btn { transition: filter .15s ease; }
}