/* Layout: a landscape plan sheet. Title block up top, plant codes and
   station distances as real labels, photos as the plates. */
:root {
  --paper: #f1f2ec;      /* pale decomposed granite */
  --sheet: #fbfbf8;      /* raised plates */
  --ink: #1c2430;
  --muted: #5b6470;
  --rule: #d3d6cc;
  --agave: #3f726c;      /* blue-green agave leaf */
  --boulder: #a2502c;    /* Apache Sunset boulder rust */
  --plaque: #233a82;     /* the plaque's navy */
  --on-plaque: #f4f6fb;

  --display: "Barlow Condensed", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --body: "Public Sans", "Helvetica Neue", Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: 0.84rem;
  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: clamp(2rem, 4.5vw, 2.9rem);
  --step-4: clamp(2.8rem, 8vw, 5.6rem);
  --wrap: 1120px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #11171d; --sheet: #172028; --ink: #e7eae3; --muted: #9ba4a9; --rule: #29333c;
    --agave: #86b8b0; --boulder: #df9468; --plaque: #2c4597; --on-plaque: #f4f6fb;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #11171d; --sheet: #172028; --ink: #e7eae3; --muted: #9ba4a9; --rule: #29333c;
  --agave: #86b8b0; --boulder: #df9468; --plaque: #2c4597; --on-plaque: #f4f6fb;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
a:focus-visible { outline: 2px solid var(--agave); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* ---------- Site header ---------- */
.site-head { border-bottom: 1px solid var(--rule); }
.site-head .wrap {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 10px 28px; padding-block: 16px;
}
.brand { display: grid; gap: 4px; min-width: 0; }
.brand-sub {
  margin: 0; font: 500 0.72rem/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--agave);
}
.wordmark {
  font: 600 var(--step-1)/1 var(--display);
  letter-spacing: 0.04em; text-transform: uppercase; text-decoration: none;
}
.wordmark span { color: var(--muted); font-weight: 500; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.site-nav a {
  font: 600 var(--step-0)/1.2 var(--display); letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none; color: var(--muted); padding-block: 6px; border-bottom: 2px solid transparent;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--boulder); }

/* ---------- Title block ---------- */
.title-block { padding-block: 48px 28px; }
.eyebrow {
  font: 500 var(--step--1)/1.4 var(--mono); letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--agave); margin: 0 0 12px;
}
h1, h2, h3 { font-family: var(--display); text-wrap: balance; margin: 0; }
h1 { font-size: var(--step-4); font-weight: 700; line-height: 0.92; letter-spacing: -0.01em; text-transform: uppercase; }
h2 { font-size: var(--step-3); font-weight: 700; line-height: 1; text-transform: uppercase; letter-spacing: 0.01em; }
h3 { font-size: var(--step-2); font-weight: 600; line-height: 1.1; }
.lede { font-size: var(--step-1); line-height: 1.5; max-width: 40ch; margin: 18px 0 0; color: var(--ink); }
.prose { max-width: 62ch; }
.prose p { margin: 0 0 1em; }

/* Sheet facts, like a drawing's title block */
.sheet-facts {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  border-top: 2px solid var(--ink); border-bottom: 1px solid var(--rule); margin-top: 32px;
}
.sheet-facts div { padding: 14px 16px 16px 0; min-width: 0; }
.sheet-facts dt {
  font: 500 0.72rem/1.3 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted);
}
.sheet-facts dd {
  margin: 6px 0 0; font: 700 var(--step-2)/1 var(--display); font-variant-numeric: tabular-nums;
}

/* ---------- Plates (photos) ---------- */
figure { margin: 0; }
figcaption {
  font: 400 var(--step--1)/1.45 var(--body); color: var(--muted); margin-top: 8px; max-width: 60ch;
}
figcaption code, .code {
  font: 500 0.78rem/1 var(--mono); color: var(--agave); letter-spacing: 0.04em;
}
.hero-plate img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
@media (min-width: 760px) { .hero-plate img { aspect-ratio: 16 / 9; } }
/* Home: the garden photo opens the page, before the title */
.home-title { padding-block: 32px 18px; }
.home-hero .hero-plate img { max-height: 72vh; object-position: 50% 30%; }
.home-facts { padding-bottom: 8px; }
.home-facts .sheet-facts { margin-top: 24px; }
.hero-frame { position: relative; }
.hero-note { margin: 14px 0 0; font: 400 var(--step-1)/1.45 var(--body); max-width: 40ch; }
@media (min-width: 760px) {
  .hero-note {
    /* Dark glass over the agave leaves in the lower left; same look in both themes. */
    position: absolute; bottom: clamp(14px, 1.8vw, 24px); left: clamp(14px, 1.8vw, 24px); margin: 0;
    max-width: 30ch; padding: 18px 22px 20px;
    color: #f4f5f0;
    background: rgba(12, 16, 20, 0.42);
    -webkit-backdrop-filter: blur(10px) saturate(120%); backdrop-filter: blur(10px) saturate(120%);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-left: 4px solid #df9468;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  }
}

.gallery { columns: 3 280px; column-gap: 20px; }
.gallery figure { break-inside: avoid; margin-bottom: 24px; }

.pair { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); align-items: start; }

/* ---------- Sections ---------- */
.section { padding-block: 56px; border-top: 1px solid var(--rule); }
.section-head { display: grid; gap: 10px; margin-bottom: 28px; }
.section-head p { margin: 0; max-width: 62ch; color: var(--muted); }

/* Median strip drawing */
.strip { overflow-x: auto; padding-block: 8px; }
.strip svg { width: 100%; min-width: 640px; height: auto; display: block; }
.strip text { font-family: var(--mono); fill: var(--muted); font-size: 11px; }
.strip .lbl { fill: var(--ink); font-weight: 500; }

/* Link cards to the four pages */
.sheets { display: grid; gap: 0; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); border-top: 2px solid var(--ink); }
.sheet-link {
  display: grid; grid-template-rows: auto auto 1fr; gap: 8px; padding: 20px 20px 24px 0;
  text-decoration: none; border-bottom: 1px solid var(--rule); min-width: 0;
}
.sheet-link .no { font: 500 0.75rem/1 var(--mono); color: var(--boulder); letter-spacing: 0.08em; }
.sheet-link h3 { text-transform: uppercase; }
.sheet-link p { margin: 0; color: var(--muted); }
.sheet-link:hover h3 { color: var(--agave); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; min-width: 520px; font-size: var(--step--1); }
th, td { text-align: left; padding: 10px 12px 10px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font: 500 0.72rem/1.3 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); border-bottom: 2px solid var(--ink); }
td.num { font-variant-numeric: tabular-nums; text-align: right; padding-right: 20px; }
th.num { text-align: right; padding-right: 20px; }

/* Steps list */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 2px solid var(--ink); }
.steps li { display: grid; grid-template-columns: 9.5rem 1fr; gap: 6px 20px; padding-block: 14px; border-bottom: 1px solid var(--rule); }
.steps time { font: 500 var(--step--1)/1.5 var(--mono); color: var(--agave); }
.steps strong { font-weight: 600; }
@media (max-width: 520px) { .steps li { grid-template-columns: 1fr; } }

/* Pull quote */
.quote { margin: 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--boulder); max-width: 46ch; }
.quote p { margin: 0; font: 600 var(--step-2)/1.2 var(--display); }
.quote cite { display: block; margin-top: 10px; font: 400 var(--step--1)/1.4 var(--body); font-style: normal; color: var(--muted); }

/* Plaque panel */
.plaque-panel {
  background: var(--plaque); color: var(--on-plaque); text-align: center;
  padding: 36px 20px; border: 6px solid var(--on-plaque); outline: 1px solid var(--rule);
}
.plaque-panel .small { font: 600 0.8rem/1.4 var(--display); letter-spacing: 0.12em; text-transform: uppercase; margin: 0; }
.plaque-panel .big { font: 700 clamp(2rem, 6vw, 3.4rem)/1 var(--display); text-transform: uppercase; margin: 6px 0 14px; letter-spacing: 0.02em; }
.plaque-panel p { margin: 0 0 6px; font: 600 var(--step-0)/1.4 var(--display); letter-spacing: 0.06em; text-transform: uppercase; }
.plaque-panel .credit { margin-top: 18px; }

.four-cs { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); border-top: 2px solid var(--ink); }
.four-cs div { padding: 20px 16px 24px 0; border-bottom: 1px solid var(--rule); }
.four-cs .letter { font: 700 4rem/0.9 var(--display); color: var(--plaque); }
:root[data-theme="dark"] .four-cs .letter { color: var(--agave); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .four-cs .letter { color: var(--agave); } }
.four-cs .word { font: 700 var(--step-2)/1 var(--display); text-transform: uppercase; margin-top: 6px; }

/* Footer */
.site-foot { border-top: 2px solid var(--ink); margin-top: 24px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; padding-block: 20px 40px; color: var(--muted); font-size: var(--step--1); }
.site-foot em { font-style: normal; color: var(--ink); }

.next-page { display: flex; justify-content: flex-end; padding-block: 8px 0; }
.next-page a { font: 600 var(--step-1)/1 var(--display); text-transform: uppercase; letter-spacing: 0.05em; text-decoration: none; border-bottom: 2px solid var(--boulder); padding-bottom: 4px; }

@media (prefers-reduced-motion: no-preference) {
  .sheet-link h3, .site-nav a { transition: color 0.15s ease; }
}
tfoot th { border-bottom: 0; border-top: 2px solid var(--ink); color: var(--ink); }

/* ---------- Photo viewer ----------
   Always dark, like a light table, in both themes. */
:root { --viewer-bg: #0c1014; --viewer-fg: #eef0ea; --viewer-muted: #a5adb2; }
img.viewable { cursor: zoom-in; }
img.viewable:focus-visible { outline: 3px solid var(--agave); outline-offset: 3px; }
html.viewer-open, html.viewer-open body { overflow: hidden; }
.viewer {
  position: fixed; inset: 0; z-index: 100;
  display: grid; grid-template-rows: auto 1fr auto;
  background: var(--viewer-bg); color: var(--viewer-fg);
  padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px);
}
.viewer[hidden] { display: none; }
.viewer-top {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px max(16px, env(safe-area-inset-right, 0px)) 8px max(16px, env(safe-area-inset-left, 0px));
}
.viewer-count { font: 500 0.78rem/1.3 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--viewer-muted); font-variant-numeric: tabular-nums; }
.viewer button {
  font: 600 1rem/1 var(--display); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--viewer-fg); background: transparent; border: 1px solid transparent; cursor: pointer;
}
.viewer button:focus-visible { outline: 2px solid var(--viewer-fg); outline-offset: 2px; }
.viewer-close { padding: 10px 12px; }
.viewer-stage {
  position: relative; display: grid; place-items: center; min-height: 0;
  padding-inline: max(16px, env(safe-area-inset-left, 0px)) max(16px, env(safe-area-inset-right, 0px));
}
.viewer-img {
  position: absolute; inset: 0; margin: auto;
  max-width: calc(100% - 2 * max(16px, env(safe-area-inset-left, 0px))); max-height: 100%;
  width: auto; height: auto; object-fit: contain; user-select: none;
}
.viewer-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 56px; height: 88px; font-size: 3rem !important; line-height: 1 !important;
  background: rgba(12, 16, 20, 0.55) !important; border-radius: 4px;
}
.viewer-prev { left: max(8px, env(safe-area-inset-left, 0px)); }
.viewer-next { right: max(8px, env(safe-area-inset-right, 0px)); }
.viewer-nav:hover { background: rgba(12, 16, 20, 0.85) !important; }
.viewer-caption {
  margin: 0 auto; max-width: 70ch; text-align: center; color: var(--viewer-fg);
  font: 400 0.95rem/1.5 var(--body); min-height: 3em;
  padding: 10px max(16px, env(safe-area-inset-right, 0px)) 18px max(16px, env(safe-area-inset-left, 0px));
}
@media (max-width: 600px) {
  .viewer-nav { width: 44px; height: 64px; font-size: 2.4rem !important; }
}