/* Damp Diary concept site, draft 3: long-form pages (the plan, the drawings).
   Same tokens, font stack and tone as the product page, set for reading. */

:root {
  --white: #FBFBFD;
  --grey: #F5F5F7;
  --black: #000000;
  --text: #1D1D1F;
  --text-2: #6E6E73;
  --text-dark: #F5F5F7;
  --text-dark-2: #A1A1A6;
  --line: #D2D2D7;
  --teal: #0A7C70;
  --teal-light: #4FD1C5;
  --green: #3E8E5A;
  --amber: #D9902A;
  --red: #C2483D;
  --gutter: clamp(16px, 4.5vw, 80px);
  --radius: 28px;
  --ease: cubic-bezier(.35, 0, 0, 1);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--white);
  color: var(--text);
  font-family: var(--sans);
  font-size: clamp(17px, 1.2vw, 19px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { max-width: 100%; display: block; }
a { color: var(--teal); }

/* ---------- bar ---------- */
.bar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  height: 52px; padding: 0 var(--gutter);
  background: rgba(251, 251, 253, .72);
  backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, .08);
}
.bar .wordmark { font-weight: 600; font-size: 21px; letter-spacing: -0.02em; color: var(--text); text-decoration: none; white-space: nowrap; }
.bar nav { display: flex; gap: 24px; margin-left: auto; }
.bar nav a { font-size: 12px; color: var(--text); text-decoration: none; opacity: .8; white-space: nowrap; }
.bar nav a:hover { opacity: 1; }

/* ---------- document ---------- */
.doc { max-width: 760px; margin: 0 auto; padding: clamp(56px, 8vh, 96px) var(--gutter) clamp(64px, 8vh, 96px); }
.doc-wide { max-width: 1180px; }
.eyebrow { font-size: clamp(15px, 1.2vw, 19px); font-weight: 600; color: var(--text-2); margin: 0 0 14px; }
.doc h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.02; letter-spacing: -0.035em; font-weight: 700; margin: 0 0 20px; text-wrap: balance; }
.doc .lede { font-size: clamp(19px, 1.7vw, 23px); line-height: 1.35; font-weight: 500; color: var(--text-2); margin: 0 0 28px; }
.doc h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.08; letter-spacing: -0.028em; font-weight: 700; margin: 56px 0 16px; text-wrap: balance; }
.doc h3 { font-size: clamp(21px, 2vw, 25px); line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; margin: 36px 0 12px; }
.doc h2 + h3 { margin-top: 20px; }
.doc p { margin: 0 0 16px; }
.doc ul, .doc ol { margin: 0 0 16px; padding-left: 22px; }
.doc li { margin: 4px 0; }
.doc li ul, .doc li ol { margin: 6px 0 0; }
.doc b { font-weight: 600; }
.doc code { font-family: var(--mono); font-size: .92em; background: var(--grey); padding: 2px 6px; border-radius: 6px; }

.table-wrap { overflow-x: auto; margin: 8px 0 24px; }
.doc table { width: 100%; border-collapse: collapse; font-size: 16px; }
.doc th, .doc td { text-align: left; vertical-align: top; padding: 10px 14px 10px 0; border-top: 1px solid var(--line); line-height: 1.4; }
.doc thead th { font-size: 13px; font-weight: 600; color: var(--text-2); border-top: none; padding-top: 0; }
.doc tbody tr:last-child td { border-bottom: 1px solid var(--line); }

/* the system at a glance */
.diagram {
  display: grid; grid-template-columns: minmax(0, 5fr) auto minmax(0, 7fr) auto minmax(0, 4fr);
  gap: 12px; align-items: stretch; margin: 8px 0 20px;
}
.box { background: var(--grey); border-radius: 20px; padding: 18px 20px; font-size: 15px; line-height: 1.4; }
.box.server { background: var(--black); color: var(--text-dark); }
.box h4 { margin: 0 0 10px; font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--text-2); }
.box.server h4 { color: var(--text-dark-2); }
.box ul { margin: 0; padding-left: 18px; }
.box li { margin: 3px 0; }
.box code { background: rgba(255, 255, 255, .12); color: inherit; }
.arrows { display: grid; align-content: center; gap: 10px; font-family: var(--mono); font-size: 12px; color: var(--teal); text-align: center; white-space: nowrap; padding: 0 2px; }

/* drawings */
.drawing { margin: 40px 0 0; display: grid; gap: 14px; }
.drawing img { width: 100%; height: auto; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.drawing figcaption { font-size: 14px; color: var(--text-2); text-align: center; }
.drawing.is-empty img { display: none; }
.drawing.is-empty::before {
  content: 'Drawing to follow: ' attr(data-file);
  display: grid; place-items: center; aspect-ratio: 16 / 10; padding: 16px; text-align: center;
  border: 2px dashed var(--line); border-radius: var(--radius); font-size: 14px; color: var(--text-2); background: var(--grey);
}
.parts-list { columns: 2; column-gap: 32px; margin: 16px 0 0; padding: 0; list-style: none; font-size: 16px; }
.parts-list b { display: inline-block; min-width: 2.2em; font-family: var(--mono); font-weight: 500; color: var(--teal); }
.parts-list li { break-inside: avoid; margin: 4px 0; }
.parts-list b { font-weight: 600; }
.parts-list span { color: var(--text-2); }
.note { margin: 24px 0 0; padding: 16px 20px; border-radius: 16px; background: var(--grey); font-size: 14px; color: var(--text-2); }

/* ---------- footer ---------- */
.page-footer { background: var(--grey); color: var(--text-2); padding: 32px var(--gutter); border-top: 1px solid var(--line); font-size: 12px; line-height: 1.6; }
.page-footer .inner { max-width: 760px; margin: 0 auto; display: grid; gap: 6px; }
.page-footer a { color: var(--text); text-decoration: none; }
.page-footer a:hover { text-decoration: underline; }

@media (max-width: 760px) {
  .diagram { grid-template-columns: 1fr; }
  .arrows { display: flex; justify-content: center; gap: 24px; }
  .parts-list { columns: 1; }
  .bar nav { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }