/* The Kerb: a timetable-inspired city journal */
:root {
  --paper: #ecefe9;
  --card: #f7f8f4;
  --ink: #16211f;
  --muted: #5a6764;
  --rule: #c9d0cb;
  --route: #1f5c4a;
  --signal: #d9552b;
  --focus: #1f5c4a;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.6 var(--sans);
}

img, svg { display: block; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: var(--card);
  padding: 0.5rem 0.9rem;
  z-index: 10;
}
.skip-link:focus { top: 1rem; }

.wrap {
  width: min(1120px, 100% - 2.5rem);
  margin-inline: auto;
}

/* Masthead */
.masthead {
  border-bottom: 3px solid var(--ink);
  padding: 1.5rem 0 1rem;
}
.masthead-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}
.title {
  margin: 0;
  font: 700 clamp(2.4rem, 6vw, 4.2rem)/0.95 var(--serif);
  letter-spacing: -0.02em;
}
.dateline {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}
.visually-hidden-heading {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Browse controls */
.controls {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.75rem;
  align-items: end;
  padding: 1.5rem 0 1rem;
}
.field { display: grid; gap: 0.3rem; }
.field span { font-size: 0.9rem; color: var(--muted); }
input[type="search"],
select {
  font: inherit;
  color: var(--ink);
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: 0;
  padding: 0.6rem 0.75rem;
  min-height: 44px;
  width: 100%;
}
input[type="search"]::placeholder { color: var(--muted); }

.toggle {
  font: inherit;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border: 1.5px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
}
.toggle[aria-pressed="true"] {
  background: var(--ink);
  color: var(--card);
}

.result-count {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Timetable list */
.timetable {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1.5px solid var(--ink);
}
.stop {
  display: grid;
  grid-template-columns: 7.5rem 1fr auto;
  gap: 0.25rem 1.25rem;
  align-items: start;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
}
.stop-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.route-badge {
  color: var(--route);
  font-weight: 700;
}
.stop-title {
  margin: 0;
  font: 700 1.3rem/1.25 var(--serif);
}
.stop-summary {
  margin: 0.3rem 0 0;
  color: var(--muted);
  max-width: 60ch;
}
.saved-mark {
  margin: 0.4rem 0 0;
  color: var(--signal);
  font-size: 0.85rem;
  font-weight: 700;
}
.open-item {
  font: inherit;
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  align-self: center;
}
.open-item:hover { background: var(--ink); color: var(--card); }

/* Empty state */
.empty-state {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--rule);
}
.empty-state h2 {
  margin: 0 0 0.4rem;
  font: 700 1.5rem/1.2 var(--serif);
}
.empty-state p { margin: 0 0 1rem; color: var(--muted); }

.button {
  font: inherit;
  min-height: 44px;
  padding: 0.55rem 1rem;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--card);
  cursor: pointer;
}

/* Detail view */
.detail {
  padding: 2rem 0 3rem;
}
.detail-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
}
.back {
  font: inherit;
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  border: 1.5px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}
.back:hover { background: var(--ink); color: var(--card); }

.article {
  max-width: 66ch;
  margin: 2rem 0 0;
}
.article-meta {
  margin: 0 0 0.75rem;
  color: var(--muted);
  font-size: 0.95rem;
}
.article h2 {
  margin: 0 0 1rem;
  font: 700 clamp(2rem, 4.8vw, 3.2rem)/1.05 var(--serif);
  letter-spacing: -0.015em;
}
.article-deck {
  margin: 0 0 1.5rem;
  font: 1.25rem/1.45 var(--serif);
  color: var(--muted);
}
.article-body p {
  margin: 0 0 1.25rem;
  font: 1.12rem/1.75 var(--serif);
}

.save-item {
  font: inherit;
  min-height: 44px;
  margin: 1.5rem 0 0;
  padding: 0.6rem 1.1rem;
  border: 2px solid var(--ink);
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
}
.save-item[aria-pressed="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: #fff;
}

.hidden { display: none !important; }

/* Mobile */
@media (max-width: 720px) {
  .wrap { width: calc(100% - 1.5rem); }
  .controls { grid-template-columns: 1fr 1fr; }
  .controls .field:first-child { grid-column: 1 / -1; }
  .stop {
    grid-template-columns: 1fr auto;
  }
  .stop-meta {
    grid-column: 1 / -1;
    flex-direction: row;
    gap: 0.75rem;
    order: -1;
  }
  .open-item { align-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}