/* peptide4dogs core: mobile-first components keyed on data-role attributes */
:root {
  --ink: #1a1a1a;
  --grey: #4a4a4a;
  --accent: #005ce6;
  --canvas: #ffffff;
  --wash: #f4f5f7;
  --rule: #d6d9de;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --dock-h: 4.25rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font: 400 1rem/1.6 var(--sans);
  padding-bottom: calc(var(--dock-h) + 1rem);
  overflow-wrap: break-word;
}

a { color: var(--accent); text-underline-offset: 0.18em; }
/* Keep links in prose readable and large enough to tap without changing their wording. */
[data-role="leg-text"] p a, [data-role="leg-text"] li a:not([data-role]) {
  display: inline-block; min-width: 44px; min-height: 44px;
  padding: 0.5rem 0.125rem; vertical-align: baseline;
}
a:focus-visible, summary:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

h1, h2, h3 { font-family: var(--sans); font-weight: 700; letter-spacing: -0.02em; color: var(--ink); }

/* skip link */
[data-role="skip"] {
  position: absolute; left: 1rem; top: -4rem;
  background: var(--ink); color: #fff; padding: 0.75rem 1rem; border-radius: 6px; z-index: 30;
}
[data-role="skip"]:focus { top: 0.5rem; }

/* masthead */
[data-role="masthead"] {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.25rem 1rem;
  padding: 0.75rem max(1rem, calc((100% - 68rem) / 2)); border-bottom: 1px solid var(--rule);
}
[data-role="wordmark"] {
  display: inline-flex; flex-wrap: wrap; align-items: baseline; gap: 0 0.6rem;
  min-height: 44px; padding: 0.4rem 0; color: var(--ink); text-decoration: none;
}
[data-role="mark"] { font: 700 1.0625rem/1.4 var(--mono); }
[data-role="tagline"] { color: var(--grey); font-size: 1rem; }
[data-role="you-are-here"] { margin: 0; font: 400 1rem/1.4 var(--mono); color: var(--grey); }

/* page frame */
[data-role="page"] { max-width: 70rem; margin: 0 auto; padding: 0 1rem; }
[data-role="page-head"] { padding: 2rem 0 1.25rem; }
[data-role="page-head"] h1 { font-size: 1.875rem; line-height: 1.15; margin: 0 0 0.75rem; max-width: 26ch; }
[data-role="page-head"] p { font-size: 1.125rem; color: var(--grey); max-width: 60ch; margin: 0; }

/* photos */
[data-role="hero-photo"], [data-role="photo"] { margin: 0 0 1.5rem; }
[data-role="hero-photo"] img, [data-role="photo"] img {
  display: block; width: 100%; height: auto; border-radius: 10px; background: var(--wash);
}
[data-role="photo"] { margin: 0.5rem 0 1.25rem; }

/* a leg of the route: text plus margin notes */
[data-role="leg"] {
  display: grid; gap: 1rem;
  border-top: 1px solid var(--rule); padding: 1.75rem 0;
}
[data-role="leg"] h2 { font-size: 1.375rem; line-height: 1.25; margin: 0 0 0.75rem; }
[data-role="leg-text"] p, [data-role="leg-text"] li { max-width: 68ch; }
[data-role="leg-text"] p { margin: 0 0 1rem; }
[data-role="leg-text"] > :last-child { margin-bottom: 0; }

[data-role="margin"] {
  border-left: 3px solid var(--rule); padding: 0.25rem 0 0.25rem 1rem; align-self: start;
}
[data-role="margin-tag"] { margin: 0 0 0.35rem; font: 400 1rem/1.4 var(--mono); color: var(--grey); }
[data-role="margin"] dl { margin: 0; }
[data-role="margin"] dt { font-weight: 700; }
[data-role="margin"] dd { margin: 0 0 0.75rem; color: var(--grey); }
[data-role="margin"] dd:last-child { margin-bottom: 0; }

/* lists */
[data-role="ledger-list"], [data-role="tally"], [data-role="flag-list"], [data-role="bring-list"] {
  list-style: none; margin: 0 0 1rem; padding: 0;
}
[data-role="ledger-list"] li, [data-role="tally"] li, [data-role="flag-list"] li, [data-role="bring-list"] li {
  padding: 0.65rem 0 0.65rem 1rem; border-left: 3px solid var(--rule); margin-bottom: 0.5rem;
}
[data-role="tally"] li { border-left-color: var(--ink); }

[data-role="checklist"] { list-style: none; margin: 0 0 1rem; padding: 0; }
[data-role="checklist"] li {
  position: relative; min-height: 44px; padding: 0.6rem 0 0.6rem 2.25rem; border-bottom: 1px solid var(--wash);
}
[data-role="checklist"] li::before {
  content: ""; position: absolute; left: 0.2rem; top: 0.85rem;
  width: 1.1rem; height: 1.1rem; border: 2px solid var(--grey); border-radius: 3px;
}

[data-role="steps"] { counter-reset: s; list-style: none; margin: 0; padding: 0; }
[data-role="steps"] li {
  counter-increment: s; position: relative; padding: 0.6rem 0 0.6rem 2.75rem; min-height: 44px;
}
[data-role="steps"] li::before {
  content: counter(s, upper-alpha); position: absolute; left: 0; top: 0.55rem;
  width: 2rem; height: 2rem; display: grid; place-items: center;
  font: 700 1rem/1 var(--mono); background: var(--wash); border-radius: 50%;
}

/* next stop */
[data-role="next-stop"] {
  margin: 1.5rem 0; padding: 1rem; border: 1px solid var(--rule); border-radius: 10px;
}
[data-role="next-tag"] { display: block; font: 400 1rem/1.4 var(--mono); color: var(--grey); }
[data-role="next-stop"] a {
  display: flex; align-items: center; min-height: 44px; font-weight: 700; font-size: 1.125rem;
}

/* source drawer */
[data-role="source-drawer"] { margin: 0 0 2rem; border: 1px solid var(--rule); border-radius: 10px; }
[data-role="source-drawer"] summary {
  min-height: 48px; display: flex; align-items: center; padding: 0.6rem 1rem; cursor: pointer;
  font: 700 1rem/1.4 var(--mono);
}
[data-role="source-drawer"] p { margin: 0 1rem 0.5rem; color: var(--grey); max-width: 64ch; }
[data-role="source-drawer"] ul { margin: 0; padding: 0 1rem 1rem 2.25rem; }
[data-role="source-drawer"] li { margin: 0.1rem 0; }
[data-role="source-drawer"] a { display: inline-block; padding: 0.65rem 0; }

/* footer */
[data-role="foot"] { background: var(--wash); padding: 2rem 1rem 1.5rem; }
[data-role="foot"] > * { max-width: 70rem; margin-left: auto; margin-right: auto; }
[data-role="foot"] h2 { font-size: 1.25rem; margin-top: 0; margin-bottom: 0.75rem; }
[data-role="stops"] { list-style: none; padding: 0; margin-bottom: 1.5rem; display: grid; gap: 0.25rem 2rem; }
[data-role="stops"] li { display: grid; grid-template-columns: 2.25rem 1fr; align-items: start; }
[data-role="stop-letter"] { font: 700 1rem/44px var(--mono); color: var(--grey); }
[data-role="stops"] a {
  display: flex; align-items: center; min-height: 44px; font-weight: 700; color: var(--ink);
}
[data-role="stops"] a[aria-current="page"] { color: var(--accent); }
[data-role="stop-note"] { grid-column: 2; color: var(--grey); margin-top: -0.35rem; padding-bottom: 0.4rem; }
[data-role="foot-line"] { color: var(--grey); max-width: 62ch; margin-bottom: 0; }

/* bottom dock */
[data-role="dock"] {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; gap: 0.25rem; justify-content: center;
  background: var(--canvas); border-top: 1px solid var(--rule);
  padding: 0.35rem 0.5rem calc(0.35rem + env(safe-area-inset-bottom, 0px));
}
[data-role="dock-link"] {
  flex: 1 1 0; max-width: 8.5rem; min-height: 48px; display: flex; align-items: center; justify-content: center;
  text-align: center; font-size: 1rem; line-height: 1.2; color: var(--ink); text-decoration: none;
  border-radius: 8px; padding: 0 0.25rem;
}
[data-role="dock-link"]:hover { background: var(--wash); }
[data-role="dock-link"][aria-current="page"] { background: var(--accent); color: #fff; }

@media (prefers-reduced-motion: no-preference) {
  [data-role="dock-link"], [data-role="next-stop"] a { transition: background-color 0.15s ease; }
}

@media (min-width: 48rem) {
  [data-role="page-head"] { padding: 2.75rem 0 1.5rem; }
  [data-role="page-head"] h1 { font-size: 2.25rem; }
  [data-role="stops"] { grid-template-columns: 1fr 1fr; }
  [data-role="dock"] {
    left: 50%; right: auto; transform: translateX(-50%); width: min(42rem, 100%);
    border: 1px solid var(--rule); border-bottom: 0; border-radius: 12px 12px 0 0;
  }
}

@media (min-width: 62rem) {
  [data-role="leg"] { grid-template-columns: minmax(0, 1fr) 15.5rem; gap: 3rem; }
  [data-role="leg-text"][data-span="full"] { grid-column: 1 / -1; }
  [data-role="margin"] { position: sticky; top: 1rem; border-left-width: 1px; }
}

@media print {
  [data-role="dock"], [data-role="skip"], [data-role="source-drawer"] summary { display: none; }
  body { padding-bottom: 0; }
}