/* gtfs.media — marketing site
   Palette: neutral inks/grays + ONE brand hue (departure-board amber; bronze
   on light backgrounds for contrast). Multicolor appears only as small
   "route blips": route pills and module dots. */

:root {
  --ink: #141821;
  --ink-2: #3d4350;
  --ink-3: #6e7482;
  --paper: #ffffff;
  --paper-2: #f6f7f9;
  --line: #e5e7eb;

  --board: #10141c;
  --board-2: #161b25;
  --board-line: #272e3c;
  --board-dim: #8f96a8;

  /* the one hue */
  --amber: #ffb300;   /* on dark */
  --amber-2: #ffc94d;
  --bronze: #8a6300;  /* on light (5.4:1 on white) */
  --bronze-2: #6f4f00;

  /* route blips only */
  --blue: #0f6bb2;
  --green: #00985f;
  --red: #df403b;
  --orange: #f5851f;
  --purple: #7d5ba6;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 68rem;
  --radius: 12px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a { color: var(--bronze); }
a:hover { color: var(--bronze-2); }

:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

h1, h2, h3, h4 {
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2rem, 5.5vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.125rem); font-weight: 750; }
h3 { font-size: 1.2rem; font-weight: 700; }

p { margin: 0 0 1em; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.lead {
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  color: var(--ink-2);
  max-width: 44em;
}

.muted { color: var(--ink-3); }

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}
.brand .tld { color: var(--ink-3); font-weight: 600; }
.brand svg { display: block; }
.brand:hover { color: var(--ink); }

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  flex-wrap: wrap;
}
.site-nav a {
  text-decoration: none;
  color: var(--ink-2);
  font-weight: 550;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] {
  color: var(--ink);
  box-shadow: 0 2px 0 var(--amber);
}
/* the nav link rule outranks .btn-primary; restore button contrast */
.site-nav a.btn-primary { color: #fff; }
.site-nav a.btn-primary:hover { color: #fff; }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  border-radius: 999px;
  font-weight: 650;
  font-size: 0.98rem;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: background-color 120ms ease, color 120ms ease, border-color 120ms ease;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; color: #fff; }
.btn-amber { background: var(--amber); color: #1a1200; }
.btn-amber:hover { background: var(--amber-2); color: #1a1200; }
.btn-ghost { border-color: var(--ink-2); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.btn-ghost-dark { border-color: #4d5568; color: #e9ecf3; }
.btn-ghost-dark:hover { border-color: #98a1b8; color: #fff; }
.btn-sm { padding: 0.45rem 1rem; font-size: 0.9rem; }

/* ---------- sections ---------- */

.section { padding: 4.5rem 0; }
.section-tight { padding: 3rem 0; }
.section-alt { background: var(--paper-2); }
.section-head { max-width: 46em; margin-bottom: 2.5rem; }

/* ---------- hero (dark board) ---------- */

.hero {
  background:
    radial-gradient(1200px 500px at 75% -10%, #1e2431 0%, transparent 60%),
    var(--board);
  color: #edf0f6;
  padding: 5rem 0 5.5rem;
  overflow: hidden;
}
.hero h1 { color: #fff; max-width: 15em; }
.hero .lead { color: #b7bdcc; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 3.5rem;
  align-items: center;
}
@media (max-width: 56rem) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-ctas {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
}

/* subpage hero variant */
.hero-sub { padding: 4rem 0; }
.hero-sub h1 { max-width: 18em; }

/* ---------- departure board mockup ---------- */

.board {
  background: var(--board-2);
  border: 1px solid var(--board-line);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(4, 7, 14, 0.55);
  font-family: var(--mono);
  overflow: hidden;
}

.board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.1rem;
  border-bottom: 1px solid var(--board-line);
  color: var(--board-dim);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.live-dot {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--amber);
  font-weight: 600;
}
.live-dot::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}
@media (prefers-reduced-motion: reduce) {
  .live-dot::before { animation: none; }
}

.board-rows { padding: 0.4rem 0; }

.board-row {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.62rem 1.1rem;
  font-size: 0.95rem;
}
.board-row + .board-row { border-top: 1px solid rgba(39, 46, 60, 0.6); }

.route-pill {
  flex: none;
  min-width: 2.3em;
  padding: 0.12em 0.5em;
  border-radius: 6px;
  text-align: center;
  font-weight: 700;
  color: #fff;
  font-size: 0.9rem;
}
.route-pill.r-blue { background: var(--blue); }
.route-pill.r-green { background: var(--green); }
.route-pill.r-red { background: var(--red); }
.route-pill.r-orange { background: var(--orange); color: #221200; }
.route-pill.r-purple { background: var(--purple); }

.board-dest {
  flex: 1;
  color: #dde2ee;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.board-eta {
  flex: none;
  color: var(--amber);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.board-eta small { color: var(--board-dim); font-weight: 400; }

.board-alert {
  color: var(--amber-2);
  font-size: 0.85rem;
  padding: 0.7rem 1.1rem;
  border-top: 1px solid var(--board-line);
  background: rgba(255, 179, 0, 0.06);
}

/* ---------- cards ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.5rem, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.35rem;
}
.section-alt .card { box-shadow: 0 1px 2px rgba(20, 24, 33, 0.04); }

.card h3 { margin-top: 0.9rem; }
.card p { margin-bottom: 0; color: var(--ink-2); font-size: 0.98rem; }

.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: border-color 120ms ease, transform 120ms ease;
}
.card-link:hover { border-color: var(--ink-3); color: inherit; transform: translateY(-2px); }
.card-link .more { color: var(--bronze); font-weight: 600; font-size: 0.92rem; display: inline-block; margin-top: 0.9rem; }

/* neutral icon chips — color stays reserved for route blips */
.card-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--ink);
}
.card-icon.i-blue, .card-icon.i-green, .card-icon.i-amber,
.card-icon.i-red, .card-icon.i-purple, .card-icon.i-orange {
  background: var(--paper-2);
  color: var(--ink);
}

/* ---------- steps (how it works) ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 1.25rem;
  counter-reset: step;
}
.step {
  counter-increment: step;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}
.step::before {
  content: "0" counter(step);
  font-family: var(--mono);
  font-weight: 700;
  color: var(--bronze);
  font-size: 0.9rem;
}
.step h3 { margin-top: 0.35rem; }
.step p { color: var(--ink-2); font-size: 0.98rem; }

/* ---------- feature rows ---------- */

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
  padding: 2.75rem 0;
}
.feature-row + .feature-row { border-top: 1px solid var(--line); }
@media (max-width: 56rem) {
  .feature-row { grid-template-columns: 1fr; gap: 1.5rem; }
}
.feature-row h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); }
.feature-row .media { min-width: 0; }

/* ---------- checklists (metro stop dots, neutral) ---------- */

.ticks {
  list-style: none;
  padding: 0;
  margin: 0 0 1em;
}
.ticks li {
  position: relative;
  padding-left: 1.7rem;
  margin-bottom: 0.6rem;
  color: var(--ink-2);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  border: 2.5px solid var(--ink-2);
  background: #fff;
}
.ticks li strong { color: var(--ink); }

/* ---------- code blocks ---------- */

pre.code {
  background: var(--board);
  color: #dde2ee;
  border: 1px solid var(--board-line);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.7;
  overflow-x: auto;
  margin: 0;
}
pre.code .c { color: #7d8498; }        /* comment */
pre.code .m { color: var(--amber); }   /* method */
pre.code .p { color: #a7d8b6; }        /* path/string */
pre.code .k { color: #a9bfe0; }        /* key */

/* ---------- screenshots ---------- */

.shot { margin: 0; min-width: 0; }
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: 0 14px 40px rgba(20, 24, 33, 0.1);
}
.shot figcaption {
  font-size: 0.88rem;
  color: var(--ink-3);
  margin-top: 0.75rem;
  max-width: 40em;
}
.shot-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 2rem;
  align-items: start;
}
.shots-displays {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem;
  align-items: start;
}
@media (max-width: 56rem) {
  .shots-displays { grid-template-columns: 1fr; }
}
.shot-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

/* two screens stacked in a dark cabinet, like the physical pylon */
.pylon-stack {
  max-width: 19rem;
  margin: 0 auto;
  display: grid;
  gap: 0.6rem;
  background: var(--board);
  border-radius: 16px;
  padding: 0.8rem;
  box-shadow: 0 18px 50px rgba(20, 24, 33, 0.25);
}
.pylon-stack img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
}

/* ---------- open source / hosted split ---------- */

.split {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1.25rem;
}
.split-panel {
  border-radius: var(--radius);
  padding: 2rem;
}
.split-panel.on-light { background: var(--paper); border: 1px solid var(--line); }
.split-panel.on-dark {
  background: var(--board);
  color: #e9ecf3;
  border: 1px solid var(--board-line);
}
.split-panel.on-dark h3, .split-panel.on-dark h2 { color: #fff; }
.split-panel.on-dark p, .split-panel.on-dark li { color: #b7bdcc; }
.split-panel.on-dark .ticks li::before { background: var(--board); border-color: var(--amber); }
.split-panel.on-dark .ticks li strong { color: #fff; }
.split-panel .btn { margin-top: 0.6rem; }

/* ---------- module cards ---------- */

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 1.25rem;
}
.module-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  background: var(--paper);
  display: flex;
  flex-direction: column;
}
.module-card h3 {
  font-family: var(--mono);
  font-size: 1.02rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.module-card h3 .dot { width: 10px; height: 10px; border-radius: 50%; flex: none; }
.module-card p { color: var(--ink-2); font-size: 0.96rem; flex: 1; }
.module-card .meta {
  font-size: 0.85rem;
  color: var(--ink-3);
  font-family: var(--mono);
  margin: 0;
}
.module-card .meta a { color: var(--bronze); text-decoration: none; }
.module-card .meta a:hover { text-decoration: underline; }

/* stack diagram */
.stack {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 34rem;
  margin: 0 auto;
  font-family: var(--mono);
  font-size: 0.92rem;
}
.stack-tier {
  display: flex;
  gap: 0.5rem;
}
.stack-box {
  flex: 1;
  text-align: center;
  padding: 0.85rem 0.75rem;
  border-radius: 10px;
  border: 1.5px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-weight: 600;
}
.stack-box small { display: block; font-family: var(--sans); font-weight: 400; color: var(--ink-3); margin-top: 0.15rem; }
.stack-box.base { background: var(--board); color: #fff; border-color: var(--board); }
.stack-box.base small { color: var(--board-dim); }
.stack-box.hl { border-color: var(--amber); background: #fff8e4; }

/* ---------- proof strip ---------- */

.proof {
  background: var(--board);
  color: #d6dbe7;
  padding: 2.4rem 0;
}
.proof .wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: space-between;
}
.proof p { margin: 0; font-size: 1.12rem; max-width: 40em; }
.proof strong { color: #fff; }
.proof .badge {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--amber);
  border: 1px solid var(--board-line);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  white-space: nowrap;
}

/* ---------- CTA band ---------- */

.cta-band {
  background:
    radial-gradient(900px 400px at 20% 120%, #1e2431 0%, transparent 60%),
    var(--board);
  color: #edf0f6;
  text-align: center;
  padding: 4.5rem 0;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #b7bdcc; max-width: 38em; margin: 0 auto 1.8rem; }
.cta-band .hero-ctas { justify-content: center; margin-top: 0; }
.cta-band .fine { font-size: 0.9rem; color: #8f96a8; margin-top: 1.6rem; }
.cta-band .fine a { color: #b7bdcc; }

/* ---------- footer ---------- */

.site-footer {
  background: #0b0f16;
  color: #99a0b0;
  padding: 3.5rem 0 2.5rem;
  font-size: 0.95rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
}
@media (max-width: 56rem) {
  .footer-grid { grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); }
}
.site-footer .brand { color: #fff; margin-bottom: 0.6rem; }
.site-footer .brand .tld { color: #8f96a8; }
.site-footer h4 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.9rem;
}
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: #b7bdcc; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.fineprint {
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid #1d2330;
  font-size: 0.85rem;
  color: #6e7590;
}
.fineprint p { margin: 0 0 0.4rem; }