/* waterplane.dev — the app's own tokens (packages/web/src/styles.css), one accent: the
   wordmark's amber. No webfonts, no third-party requests. */
:root {
  color-scheme: light dark;
  --bg: #eef1f6;
  --panel: #ffffff;
  --line: #d4dae4;
  --fg: #1c2430;
  --muted: #57616f;
  --accent: #a84c0c;
  --code-bg: #e3e8f0;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0d10;
    --panel: #14181d;
    --line: #232a32;
    --fg: #d6dce5;
    --muted: #8b95a2;
    --accent: #f5a93f;
    --code-bg: #14181d;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.55 var(--sans);
}
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
code, pre { font-family: var(--mono); font-size: .88em; }
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; }
pre {
  background: var(--code-bg);
  border-left: 3px solid var(--accent);
  padding: 12px 14px;
  margin: 0 0 1.1em;
  overflow-x: auto;
  line-height: 1.5;
}
pre code { background: none; padding: 0; font-size: 1em; }
img { max-width: 100%; height: auto; display: block; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 40px; } }

/* Top line: the wordmark, and on the right the one link that says where the source is. */
.top { display: flex; align-items: center; gap: 10px; padding: 20px 0 0; }
.top img { width: 28px; height: 28px; }
.wordmark { font: 700 18px/1 var(--mono); color: var(--fg); text-decoration: none; }
.wordmark span { color: var(--accent); }
.top .gh { margin-left: auto; font-size: 15px; font-weight: 600; white-space: nowrap; }
@media (max-width: 479px) { .top .gh .wide-only { display: none; } }

h1, h2, h3 { line-height: 1.2; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 6.2vw, 46px); margin: 0 0 .45em; max-width: 16ch; }
h2 { font-size: 26px; margin: 0 0 .6em; }
h3 { font-size: 20px; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
.lede { font-size: 19px; max-width: 34em; }
.muted { color: var(--muted); }
.small { font-size: 15px; }

/* A section is text on the left, the phone on the right; stacked under 860px. */
.row { display: grid; gap: 28px; padding: 48px 0; border-top: 1px solid var(--line); }
.row:first-of-type { border-top: 0; }
.row > * { min-width: 0; }
.row > .text { max-width: 36em; }
@media (min-width: 860px) {
  .row { grid-template-columns: minmax(0, 1fr) 270px; gap: 64px; align-items: start; }
  .row.hero { padding-top: 56px; }
}
.hero { padding-top: 28px; }

.phone {
  margin: 0;
  width: 270px;
  max-width: 100%;
}
.phone img {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #0b0d10;
}
figcaption { font-size: 14px; color: var(--muted); margin-top: 8px; }

.links { margin: 1.4em 0 .6em; font-size: 17px; }
.links a { font-weight: 600; }
.links .sep { color: var(--muted); padding: 0 .35em; }

.diagram { margin: 1.4em 0 0; }
.diagram img { width: 100%; max-width: 640px; }
.wide { margin: 1.4em 0 0; }
.wide img { width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line, #30363d); }

.note {
  border-left: 3px solid var(--accent);
  padding: 2px 0 2px 14px;
  margin: 0 0 1.2em;
}
ul { padding-left: 1.2em; margin: 0 0 1em; }
li { margin: 0 0 .35em; }

footer { border-top: 1px solid var(--line); padding: 28px 0 40px; font-size: 15px; color: var(--muted); }
footer p { margin: 0 0 .4em; }

/* Long-form pages (privacy, 404). */
.doc { max-width: 40em; padding: 40px 0 24px; }
.doc h2 { font-size: 21px; margin-top: 1.6em; }