/* ============================================================
   CROSSTOWN, a magazine of everyday city life
   Concept: the magazine is a transit network. Stories are stops,
   topics are lines, saved stories form a commute.

   Shape rule: panels and cards are sharp (radius 0); interactive
   pills, nodes and roundels are full circles. One system, no mixing.
   Color rule: the page is paper + ink; saturated color belongs to
   the five line identities and is used identically everywhere a
   line appears (rails, terminus pills, nodes, detail bands).
   ============================================================ */

@font-face {
  font-family: "Space Grotesk";
  src: url("assets/space-grotesk.ttf") format("truetype");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Literata";
  src: url("assets/literata.ttf") format("truetype");
  font-weight: 300 900;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("assets/ibm-plex-mono.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

:root {
  --paper: #f7f5f0;
  --ink: #1b1a17;
  --muted: #5c5952;
  --hair: #d9d5cb;
  --board: #232019;
  --board-text: #f3efe6;

  --c-places: #7a4a1b;
  --c-movement: #1b47b8;
  --c-culture: #a9186c;
  --c-food: #c2411f;
  --c-people: #0b7a3e;

  --sans: "Space Grotesk", system-ui, sans-serif;
  --serif: "Literata", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --radius-pill: 999px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

body.locked { overflow: hidden; }

button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}
.detail-band :focus-visible,
.roundel-bar :focus-visible {
  outline-color: #fff;
}

/* ---------- masthead ---------- */

.masthead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding: 18px 24px 16px;
  border-bottom: 2px solid var(--ink);
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.roundel {
  width: 56px;
  height: 45px;
  flex: none;
}

.wordmark {
  margin: 0;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.045em;
  line-height: 1;
}

.tagline {
  margin: 5px 0 0;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.controls {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

.control { display: flex; flex-direction: column; gap: 5px; }

.control-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

#search,
#line {
  font: 400 14px/1 var(--sans);
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 0;
  padding: 10px 12px;
  height: 41px;
}

#search { width: 240px; }
#line { min-width: 150px; }

#search::placeholder { color: var(--muted); }

.control-toggle button {
  height: 41px;
  padding: 0 16px;
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font: 600 13px/1 var(--sans);
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.control-toggle button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.control-toggle button:active { transform: scale(0.97); }

/* ---------- service board ---------- */

.board {
  background: var(--board);
  color: var(--board-text);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 11px 24px;
  overflow-x: auto;
  white-space: nowrap;
}

/* ---------- map ---------- */

.map {
  max-width: 1400px;
  margin: 0 auto;
  padding: 8px 24px 40px;
  width: 100%;
}

.line { padding: 4px 0; }

.track { position: relative; height: 400px; }

.rail {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 10px;
  transform: translateY(-50%);
  transform-origin: left center;
  background: var(--line);
  border-radius: 5px;
}

.terminus {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  margin: 0;
  background: var(--line);
  color: #fff;
  font: 600 12px/1 var(--sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 10px 15px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.stops {
  position: absolute;
  left: 172px;
  right: 16px;
  top: 0;
  bottom: 0;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
}
.stops.single { grid-template-columns: 1fr; }

.stop { position: relative; }

.node {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 22px;
  height: 22px;
  transform: translate(-50%, -50%);
  background: var(--paper);
  border: 5px solid var(--line);
  border-radius: 50%;
  z-index: 2;
  transition: transform 0.18s ease;
}
.node.saved { background: var(--line); }

.stub {
  position: absolute;
  left: 50%;
  width: 2px;
  background: var(--line);
  transform: translateX(-50%);
}
.stop.above .stub { bottom: calc(50% + 11px); height: 24px; }
.stop.below .stub { top: calc(50% + 11px); height: 24px; }

.card {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: min(100%, 380px);
}
.stop.above .card { bottom: calc(50% + 38px); }
.stop.below .card { top: calc(50% + 38px); }

.card .open {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 4px 6px;
  color: var(--ink);
  border-radius: 0;
  transition: transform 0.12s ease;
}
.card .open:active { transform: scale(0.98); }

.code {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 6px;
}

.card-title {
  display: block;
  font: 600 20px/1.25 var(--sans);
  letter-spacing: -0.01em;
  text-decoration: underline transparent;
  text-decoration-thickness: 2.5px;
  transition: text-decoration-color 0.15s ease;
}
.card .open:hover .card-title,
.card .open:focus-visible .card-title {
  text-decoration-color: var(--line);
}

.meta { display: block; margin-top: 8px; }
.meta .author {
  display: block;
  font: 500 13px/1.3 var(--sans);
  color: var(--ink);
}
.meta .stamp {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.chip {
  position: absolute;
  top: -13px;
  right: 0;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 3px 9px;
}

/* ---------- empty state ---------- */

.empty {
  max-width: 620px;
  margin: 0 auto;
  padding: 90px 24px 110px;
  text-align: center;
}
.empty-sign {
  margin: 0 0 12px;
  font: 700 30px/1.15 var(--sans);
  letter-spacing: -0.01em;
}
.empty-body {
  margin: 0 auto 26px;
  max-width: 46ch;
  font: 400 15px/1.6 var(--sans);
  color: var(--muted);
}

.pill {
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font: 600 13px/1 var(--sans);
  padding: 12px 20px;
  transition: transform 0.1s ease;
}
.pill:active { transform: scale(0.97); }
.pill-solid { background: var(--ink); color: var(--paper); }

/* ---------- colophon ---------- */

.colophon {
  border-top: 2px solid var(--ink);
  padding: 16px 24px 22px;
}
.colophon p {
  margin: 0;
  max-width: 1400px;
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- detail (station) ---------- */

.overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(27, 26, 23, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.overlay[hidden] { display: none; }

.detail {
  background: var(--paper);
  border: 2px solid var(--ink);
  width: min(860px, 100%);
  max-height: calc(100dvh - 40px);
  max-height: calc(100vh - 40px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.detail-band {
  background: var(--line);
  color: #fff;
  padding: 22px 24px 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.band-pill {
  display: inline-block;
  background: var(--paper);
  color: var(--line);
  font: 600 11px/1 var(--sans);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 6px 11px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

#detail-title {
  margin: 0;
  font: 700 clamp(24px, 4vw, 36px)/1.15 var(--sans);
  letter-spacing: -0.015em;
  max-width: 26ch;
}

.close {
  flex: none;
  border: 2px solid var(--paper);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font: 600 13px/1 var(--sans);
  padding: 10px 16px;
  transition: transform 0.1s ease;
}
.close:active { transform: scale(0.96); }

.detail-scroll { overflow-y: auto; padding: 22px 28px 40px; }

.detail-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hair);
}
.byline { margin: 0; font: 600 15px/1.3 var(--sans); }
.stamp { margin: 4px 0 0; font-family: var(--mono); font-size: 11px; color: var(--muted); }

.save {
  border: 2px solid var(--ink);
  border-radius: var(--radius-pill);
  background: var(--paper);
  color: var(--ink);
  font: 600 13px/1 var(--sans);
  padding: 11px 18px;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.save[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.save:active { transform: scale(0.97); }

.standfirst {
  margin: 20px 0 0;
  font: italic 400 19px/1.5 var(--serif);
  color: var(--muted);
  max-width: 52ch;
}

.roundel {
  float: left;
  position: relative;
  width: 158px;
  margin: 22px 26px 14px 0;
}
.roundel img {
  display: block;
  width: 158px;
  height: 158px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid var(--line);
}
.roundel-bar {
  position: absolute;
  left: -26px;
  right: -26px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--line);
  color: #fff;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-align: center;
  padding: 4px 0;
}

.article { margin-top: 6px; }
.article p {
  margin: 0 0 1.15em;
  font: 400 17px/1.75 var(--serif);
  max-width: 62ch;
}

.more { clear: both; margin-top: 44px; padding-top: 20px; border-top: 1px solid var(--hair); }
.more h2 {
  margin: 0 0 10px;
  font: 600 15px/1.3 var(--sans);
}
.more-btn {
  display: block;
  background: none;
  border: none;
  padding: 8px 2px;
  text-align: left;
  color: var(--ink);
  font: 500 15px/1.4 var(--sans);
  text-decoration: underline transparent;
  text-decoration-thickness: 2px;
  transition: text-decoration-color 0.15s ease;
}
.more-btn:hover, .more-btn:focus-visible { text-decoration-color: var(--line); }
.more-btn .code { display: inline; margin-right: 10px; }

/* ---------- motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  .line { animation: rise 0.5s both; }
  .rail { animation: grow 0.55s 0.08s both cubic-bezier(0.16, 1, 0.3, 1); }
  .stop { animation: pop 0.35s both; }
  .overlay:not([hidden]) .detail { animation: rise 0.25s cubic-bezier(0.16, 1, 0.3, 1); }

  @keyframes rise {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes grow {
    from { transform: translateY(-50%) scaleX(0); }
    to { transform: translateY(-50%) scaleX(1); }
  }
  @keyframes pop {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

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

/* ---------- mobile ---------- */

@media (max-width: 860px) {
  .masthead { align-items: stretch; padding: 16px 16px 14px; }
  .wordmark { font-size: 26px; }
  .controls { width: 100%; }
  .control { flex: 1 1 auto; }
  #search { width: 100%; }
  .control-toggle { flex: none; }

  .board { padding: 10px 16px; }
  .map { padding: 6px 16px 28px; }

  .track { height: auto; padding: 6px 0 4px; }
  .rail { display: none; }

  .terminus {
    position: static;
    transform: none;
    display: inline-block;
    margin: 0 0 16px 21px;
  }

  .stops {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    display: block;
    margin-left: 21px;
  }
  .stops::before {
    content: "";
    position: absolute;
    left: 7px;
    top: -4px;
    bottom: -4px;
    width: 8px;
    background: var(--line);
    border-radius: 4px;
  }

  .stop {
    display: grid;
    grid-template-columns: 22px 1fr;
    column-gap: 14px;
    padding: 11px 0;
  }
  .stop .node {
    position: static;
    transform: none;
    grid-column: 1;
    grid-row: 1;
    align-self: start;
    margin-top: 4px;
    z-index: 2;
  }
  .stop .stub { display: none; }
  .stop .card {
    position: static;
    transform: none;
    width: 100%;
    grid-column: 2;
    grid-row: 1;
  }
  .chip { top: -11px; }

  .overlay { padding: 0; align-items: stretch; }
  .detail {
    width: 100%;
    max-height: none;
    height: 100dvh;
    border: none;
  }
  .detail-band { padding: 18px 16px 16px; }
  .detail-scroll { padding: 18px 16px 36px; }
  .roundel { width: 124px; margin: 18px 20px 10px 0; }
  .roundel img { width: 124px; height: 124px; }
  .roundel-bar { left: -16px; right: -16px; }
}