/* Viltrum: the logo's graphite and white on a soft field. Rounded where hands
   touch, hairlines where the eye reads, one heavy line for the route. */
:root {
  --ink: #141518;
  --paper: #fff;
  --mute: #555;
  --mute-dark: #a3a3a3;
  --hair: #d6d6d6;
  --wash: #f2f2f2;
  --field: #f2f3f5;
  --line: #dfe1e5;
  --control-line: #b9bcc2;
  --line-dark: #2a2c31;
  --radius: 12px;
  --radius-sm: 8px;
  /* The platform's UI face: Segoe UI on Windows, SF on Apple, Roboto or the
     desktop face on Linux. Nothing is downloaded. */
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --display: "Segoe UI Variable Display", "SF Pro Display", system-ui, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --max: 96rem;
  /* Fluid on small screens; on wide ones it centers a --max column (percent
     resolves against the element's own container, so the dashboard's work
     area centers inside itself); never under a notch. */
  --gutter: max(clamp(1rem, 4vw, 4rem), calc((100% - var(--max)) / 2),
    env(safe-area-inset-left), env(safe-area-inset-right));
  --rail: 15rem;
  color-scheme: light;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--field);
  line-height: 1.5;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}

code,
.mono {
  font-family: var(--mono);
  font-size: 0.9em;
  font-variant-numeric: tabular-nums;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-wrap: balance;
}

p {
  margin: 0;
}

[hidden] {
  display: none !important;
}

.label-short {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---- Shared parts ---------------------------------------------------- */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: -0.02em;
  min-height: 2.75rem;
  text-decoration: none;
  color: var(--paper);
}

.brand img {
  width: 2.5rem;
  height: 2.5rem;
  display: block;
}

/* A plate is a sign: square, solid, one action. */
.plate {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3rem;
  padding: 0 1.25rem;
  border: 2px solid var(--ink);
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--paper);
  font: inherit;
  font-weight: 600;
  font-size: 1.0625rem;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 120ms ease-out, color 120ms ease-out;
}

.plate svg {
  width: 1.25rem;
  height: 1.25rem;
  flex: none;
  transition: transform 160ms cubic-bezier(0.16, 1, 0.3, 1);
}

.plate:disabled {
  cursor: progress;
  background: var(--wash);
  color: var(--mute);
  border-color: var(--hair);
}

.plate-quiet {
  background: var(--paper);
  color: var(--ink);
}

/* On black the plate inverts. */
.band .plate,
.rail .plate {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.band :focus-visible,
.rail :focus-visible,
.strip :focus-visible,
.foot :focus-visible {
  outline-color: var(--paper);
}

input,
textarea {
  font: inherit;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--control-line);
  border-radius: var(--radius-sm);
  padding: 0 0.875rem;
  min-height: 3rem;
  width: 100%;
}

textarea {
  padding-block: 0.65rem;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: var(--mute);
}

input:focus-visible,
textarea:focus-visible {
  outline-offset: 0;
  border-color: var(--ink);
}

.field {
  display: grid;
  gap: 0.375rem;
}

.field > span {
  font-size: 0.875rem;
  font-weight: 700;
}

/* ---- Landing ---------------------------------------------------------- */

.band {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 0 var(--gutter);
  min-height: 5rem;
  background: var(--ink);
  color: var(--paper);
}

.band .brand {
  font-size: 1.5rem;
  gap: 0.875rem;
}

.band .brand img {
  width: 2.75rem;
  height: 2.75rem;
}

.band-nav {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
  font-weight: 700;
}

.band-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  text-decoration: none;
}

.first {
  min-height: calc(100svh - 5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 1fr auto auto;
}

.hero {
  padding: clamp(1.5rem, 3.5vh, 4rem) var(--gutter) clamp(1.25rem, 2.5vh, 2.5rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  align-items: center;
  gap: 2rem clamp(2rem, 5vw, 5rem);
}

.hero-copy {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  min-width: 0;
}

.hero h1 {
  /* Sized by width and height, so the first viewport holds on short and tall screens. */
  font-size: clamp(2.25rem, min(4.6vw, 8vh), 6rem);
  letter-spacing: -0.035em;
  line-height: 1;
  max-width: 13em;
}

@media (min-width: 1100px) {
  .hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(24rem, 0.85fr);
  }
}

/* The live request log: what this server answered, and how long it took inside. */
.wire {
  min-width: 0;
  display: grid;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem 0.75rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
}

.wire-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.25rem 1rem;
}

.wire-head h2 {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1rem;
  letter-spacing: 0;
}

.wire-note {
  color: var(--mute-dark);
  font-size: 0.8125rem;
}

.wire-rows {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.wire-rows li {
  display: grid;
  grid-template-columns: 4.25rem minmax(0, 1fr) 2.75rem 5.5rem;
  gap: 0.75rem;
  align-items: baseline;
  padding: 0.5rem 0;
  border-top: 1px solid var(--line-dark);
}

.wire-rows .m {
  font-weight: 700;
}

.wire-rows .r {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.wire-rows .s,
.wire-rows .t {
  color: var(--mute-dark);
  text-align: right;
}

.wire-rows li.fresh {
  animation: arrive 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.wire-rows li.fresh .r {
  color: var(--paper);
}

.wire-empty {
  color: var(--mute-dark);
  font-family: var(--sans);
}

@keyframes arrive {
  from { opacity: 0; transform: translateY(-0.5rem); }
  to { opacity: 1; transform: none; }
}

.lede {
  font-size: clamp(1.125rem, 1.6vw, 1.375rem);
  max-width: 44rem;
  line-height: 1.45;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 1rem;
}

.actions form {
  margin: 0;
}

.clone {
  display: inline-flex;
  min-width: 0;
  align-items: stretch;
  overflow: hidden;
  background: var(--paper);
  border-radius: var(--radius-sm);
  border: 2px solid var(--ink);
  min-height: 3rem;
  max-width: 100%;
}

.clone code {
  min-width: 0;
  display: flex;
  align-items: center;
  padding: 0 1rem;
  white-space: nowrap;
  overflow-x: auto;
  font-size: 0.875rem;
}

.clone button {
  appearance: none;
  border: 0;
  border-left: 2px solid var(--ink);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
  padding: 0 1rem;
  cursor: pointer;
}

.note {
  color: var(--mute);
  font-size: 0.9375rem;
}

/* The line: a request's trip, five stops on one black rule. */
.route {
  padding: 0 var(--gutter) clamp(1.75rem, 4vh, 2.75rem);
}

.route-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-bottom: 1.75rem;
}

.route-head h2 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
}

.route-head h2 img {
  width: 2rem;
  height: 2rem;
}

.line output {
  min-height: 1.5rem;
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.9375rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.line {
  --stops: 5;
  position: relative;
  /* The rider travels by transform; clip it so the page never widens. */
  overflow-x: clip;
  overflow-clip-margin: 1rem;
  display: grid;
  grid-template-columns: repeat(var(--stops), 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.line::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0.875rem;
  height: 6px;
  background: var(--ink);
}

.line li {
  position: relative;
  display: grid;
  align-content: start;
  gap: 0.25rem;
  padding-right: 1.5rem;
}

.stop {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 6px solid var(--ink);
  background: var(--paper);
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

.line b {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.line li > b + span {
  color: var(--mute);
  font-size: 0.9375rem;
  line-height: 1.4;
}

.line .rider {
  position: absolute;
  top: 0.125rem;
  left: 0;
  right: 0;
  height: 2rem;
  padding: 0;
  opacity: 0;
  pointer-events: none;
  z-index: 2;
}

.line .rider::before,
.line .rider::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0.125rem;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--ink);
}

.line .rider::after {
  top: 0.5rem;
  left: 0.625rem;
  width: 1rem;
  height: 1rem;
  background: var(--paper);
}

/* 900ms over four gaps: the rider reaches stop i at i * 225ms, when it lights. */
.line.go .rider {
  animation:
    ride 900ms linear forwards,
    depart 500ms cubic-bezier(0.16, 1, 0.3, 1) 3200ms forwards;
}

.line.go .stop {
  animation:
    lit 1ms linear calc(var(--i) * 225ms) forwards,
    unlit 700ms ease-out calc(3200ms + var(--i) * 60ms) forwards;
}

@keyframes ride {
  0% { opacity: 1; transform: translateX(0); }
  100% { opacity: 1; transform: translateX(calc(100% * (var(--stops) - 1) / var(--stops))); }
}

@keyframes depart {
  from { opacity: 1; transform: translateX(calc(100% * (var(--stops) - 1) / var(--stops))); }
  to { opacity: 0; transform: translateX(calc(100% * (var(--stops) - 1) / var(--stops) + 1.5rem)); }
}

@keyframes unlit {
  from { background: var(--ink); }
  to { background: var(--paper); }
}

@keyframes lit {
  to { background: var(--ink); }
}

/* The departure strip: live facts, read from this process. */
.strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2.25rem;
  align-items: center;
  padding: 1rem var(--gutter);
  background: var(--ink);
  color: var(--paper);
  font-size: 1.25rem;
}

.strip .live {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--paper);
  font-weight: 700;
}

.pulse {
  display: inline-block;
  flex: none;
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background: var(--paper);
  opacity: 0.55;
}

.pulse.beat {
  animation: beat 1400ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes beat {
  from { opacity: 1; transform: scale(1.9); }
  to { opacity: 0.55; transform: scale(1); }
}

.strip span {
  color: var(--mute-dark);
}

.strip span b {
  color: var(--paper);
  font-family: var(--mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* Below the fold the line keeps running down the left edge. */
.stops {
  margin: 0 var(--gutter);
  border-left: 6px solid var(--ink);
}

.section {
  --top: clamp(3rem, 8vh, 5.5rem);
  position: relative;
  padding: var(--top) 0 clamp(2.5rem, 6vh, 4rem) clamp(1.5rem, 4vw, 3.5rem);
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
  gap: 1.5rem clamp(2rem, 5vw, 5rem);
  border-bottom: 1px solid var(--line);
}

.section:last-child {
  border-bottom: 0;
}

.section::before {
  content: "";
  position: absolute;
  left: calc(-1.125rem - 3px);
  top: calc(var(--top) - 0.125rem);
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 6px solid var(--ink);
  background: var(--paper);
}

.section h2 {
  font-size: clamp(1.875rem, 3.4vw, 3rem);
  letter-spacing: -0.035em;
}

.section-text {
  display: grid;
  gap: 1rem;
  align-content: start;
  max-width: 34rem;
}

.section-text p {
  color: var(--mute);
}

.section-text p strong {
  color: var(--ink);
}

pre {
  margin: 0;
  align-self: start;
  min-width: 0;
  padding: 1.5rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.9375rem;
  line-height: 1.6;
  tab-size: 4;
}

pre ::selection,
pre::selection {
  background: var(--paper);
  color: var(--ink);
}

.spec {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(7.5rem, max-content) minmax(0, 1fr);
  align-self: start;
  padding: 0.25rem 1.5rem;
  background: var(--paper);
  border-radius: var(--radius);
}

.spec dt,
.spec dd {
  margin: 0;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--hair);
}

.spec dt {
  font-weight: 700;
  padding-right: 1.5rem;
}

.spec dd {
  color: var(--mute);
}

.spec dd code {
  color: var(--ink);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  padding: 1.75rem var(--gutter);
  background: var(--ink);
  color: var(--mute-dark);
  font-size: 0.9375rem;
}

.foot a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  color: var(--paper);
}

.foot .brand {
  font-size: 1.125rem;
}

.foot .brand img {
  width: 2rem;
  height: 2rem;
}

/* ---- Dashboard ------------------------------------------------------- */

.app {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  min-height: 100vh;
}

.rail {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1.25rem 1rem 1.25rem 1.25rem;
  background: var(--ink);
  color: var(--paper);
  overflow-y: auto;
}

.rail-nav {
  display: grid;
  gap: 0.25rem;
}

.rail-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 2.75rem;
  padding: 0 0.5rem;
  font-weight: 700;
  font-size: 1.0625rem;
  text-decoration: none;
  color: var(--mute-dark);
}

.rail-link .disc {
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  border: 3px solid currentColor;
  flex: none;
}

.rail-link[aria-current="page"] {
  color: var(--paper);
}

.rail-link[aria-current="page"] .disc {
  background: var(--paper);
  border-color: var(--paper);
}

.rail-link.is-locked {
  color: var(--mute-dark);
  cursor: not-allowed;
}

.disc {
  position: relative;
}

/* A barred disc: the stop exists, the line is closed. */
.is-locked .disc::after,
.closed .disc::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150%;
  height: 3px;
  background: currentColor;
  transform: translate(-50%, -50%) rotate(-45deg);
}

.rail-foot {
  margin-top: auto;
  display: grid;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 2px solid var(--mute);
  font-size: 0.875rem;
}

.rail-foot .status {
  color: var(--mute-dark);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.rail-foot .status .pulse {
  margin-right: 0.5rem;
  vertical-align: 0.0625rem;
}

.rail-foot .status b {
  color: var(--paper);
  font-family: var(--mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.rail-foot .who {
  color: var(--mute-dark);
  overflow-wrap: anywhere;
}

.rail-foot form {
  margin: 0;
}

.rail-foot .plate {
  min-height: 2.5rem;
  width: 100%;
  justify-content: center;
  font-size: 0.9375rem;
}

.rail-foot a {
  color: var(--mute-dark);
}

.work {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  padding: 1.75rem var(--gutter) 1.25rem;
  border-bottom: 1px solid var(--line);
}

.bar h1 {
  font-size: 2.25rem;
  letter-spacing: -0.03em;
}

.bar .count {
  font-family: var(--mono);
  font-size: 0.9375rem;
  color: var(--mute);
}

.bar .api {
  margin-left: auto;
  font-size: 0.875rem;
  color: var(--mute);
}

.pane {
  container: pane / inline-size;
  flex: 1;
  padding: 1.75rem var(--gutter) 3rem;
  display: grid;
  gap: 1.75rem;
  align-content: start;
}

.flash {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.5rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.flash:empty {
  display: none;
}

.composer {
  display: grid;
  grid-template-columns: minmax(10rem, 1fr) minmax(12rem, 2fr) auto;
  gap: 0.75rem;
  align-items: end;
  padding: 1.25rem;
  background: var(--paper);
  border-radius: var(--radius);
}

.composer .plate {
  justify-content: center;
}

.table-wrap {
  overflow-x: auto;
  padding: 0 1.25rem;
  background: var(--paper);
  border-radius: var(--radius);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 0.875rem 1rem 0.875rem 0;
  border-bottom: 1px solid var(--hair);
}

th {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--mute);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

td.num {
  font-family: var(--mono);
  font-size: 0.875rem;
  width: 4rem;
}

td.strong {
  font-weight: 700;
}

td.desc {
  color: var(--mute);
  overflow-wrap: anywhere;
}

td.act {
  width: 1%;
  padding-right: 0;
  text-align: right;
}

td.act form {
  margin: 0;
}

.row-btn {
  appearance: none;
  min-height: 2.25rem;
  padding: 0 0.875rem;
  border: 1px solid var(--control-line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
}

td.empty {
  padding: 2.5rem 0;
  color: var(--mute);
}

.tag {
  display: inline-block;
  padding: 0.0625rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--ink);
  font-size: 0.8125rem;
  font-weight: 700;
}

.tag.is-solid {
  background: var(--ink);
  color: var(--paper);
}

.meta {
  margin: 0;
  display: grid;
  grid-template-columns: 8rem 1fr;
  max-width: 40rem;
  padding: 0.25rem 1.5rem;
  background: var(--paper);
  border-radius: var(--radius);
}

.meta dt,
.meta dd {
  margin: 0;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--hair);
}

.meta dt {
  font-weight: 700;
}

.meta dd {
  overflow-wrap: anywhere;
}

.hint {
  max-width: 40rem;
  display: grid;
  gap: 0.75rem;
}

.hint p {
  color: var(--mute);
}

/* Sign in: the dashboard, locked. */
.signin {
  display: grid;
  grid-template-columns: minmax(0, 24rem) minmax(0, 1fr);
  gap: 2rem clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.signin form {
  display: grid;
  gap: 1rem;
}

.signin .plate {
  justify-content: space-between;
}

.locked {
  display: grid;
  gap: 0.75rem;
  padding: 0 1.25rem;
  color: var(--mute);
  background: var(--paper);
  border-radius: var(--radius);
}

.locked th {
  color: var(--mute);
  border-color: var(--hair);
}

td.closed {
  padding: 1.25rem 0;
  font-weight: 700;
  color: var(--ink);
}

td.closed .disc {
  display: inline-block;
  vertical-align: -0.125rem;
  width: 1rem;
  height: 1rem;
  margin-right: 0.75rem;
  border-radius: 50%;
  border: 3px solid currentColor;
}

/* Hover only where a pointer hovers: on touch a tapped plate must not stay inverted. */
@media (hover: hover) {
  a:hover {
    text-decoration-thickness: 2px;
  }

  .plate:hover {
    background: var(--paper);
    color: var(--ink);
  }

  .plate:hover svg {
    transform: translateX(3px);
  }

  .plate-quiet:hover {
    background: var(--ink);
    color: var(--paper);
  }

  .band .plate:hover,
  .rail .plate:hover {
    background: var(--ink);
    color: var(--paper);
  }

  .band-nav a:hover {
    text-decoration: underline;
  }

  .clone button:hover {
    background: var(--ink);
    color: var(--paper);
  }

  a.rail-link:hover {
    color: var(--paper);
  }

  .row-btn:hover {
    background: var(--ink);
    color: var(--paper);
  }
}

/* ---- Adaptation -------------------------------------------------------
   Content-driven breakpoints: 1100 (rail narrows), 900 (sections stack),
   760 (phone: line turns vertical, dashboard nav moves to the thumb),
   480 (shortest labels). Tables stack by the pane's width, not the screen's. */

@media (max-width: 1100px) {
  :root {
    --rail: 12rem;
  }
}

@media (max-width: 900px) {
  .section,
  .signin {
    grid-template-columns: minmax(0, 1fr);
  }

  .locked {
    display: none;
  }
}

/* The composer keeps one row while the pane is wide enough for it. */
@container pane (max-width: 44rem) {
  .composer {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* A narrow pane turns each table row into a stacked entry: id beside the
   title, details under it, the row action on the right. Every column stays. */
@container pane (max-width: 34rem) {
  .table-wrap thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .table-wrap tr:last-child {
    border-bottom: 0;
  }

  .table-wrap tr {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 1fr) auto;
    column-gap: 0.75rem;
    row-gap: 0.25rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--hair);
  }

  .table-wrap td {
    grid-column: 2;
    padding: 0;
    border: 0;
    width: auto;
  }

  .table-wrap td:first-child {
    grid-column: 1;
    grid-row: 1 / span 4;
  }

  .table-wrap td.act {
    grid-column: 3;
    grid-row: 1 / span 4;
    align-self: start;
  }

  .table-wrap td[data-label]::before {
    content: attr(data-label) " ";
    color: var(--mute);
    font-family: var(--sans);
    font-weight: 400;
  }

  .table-wrap td.empty {
    grid-column: 1 / -1;
    grid-row: auto;
    padding: 1.5rem 0;
  }
}

@media (max-width: 760px) {
  .band {
    gap: 1rem;
    min-height: 4.5rem;
  }

  .band .brand {
    font-size: 1.375rem;
    gap: 0.75rem;
  }

  .band .brand img {
    width: 2.5rem;
    height: 2.5rem;
  }

  .first {
    min-height: calc(100svh - 4.5rem);
  }

  .strip {
    font-size: 1rem;
  }

  .band-nav {
    display: none;
  }

  .band > form {
    margin-left: auto;
  }

  .band .plate {
    margin-left: auto;
    padding: 0 0.875rem;
    font-size: 0.9375rem;
  }

  .line {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .line::before {
    left: 0.9375rem;
    right: auto;
    top: 0;
    bottom: 0;
    width: 6px;
    height: auto;
  }

  .line li {
    grid-template-columns: 2.25rem 1fr;
    column-gap: 1rem;
    padding: 0;
  }

  .line li .stop {
    grid-row: span 3;
    margin: 0;
  }

  .line li > output {
    grid-column: 2;
  }

  .line .rider {
    display: none;
  }

  .wire-rows li:nth-child(n + 6) {
    display: none;
  }

  /* Dashboard on a phone: brand and sign-out on top, the stops along the
     bottom edge where the thumb is, clear of the home indicator. */
  .app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto 1fr;
  }

  .rail {
    position: static;
    height: auto;
    overflow: visible;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    padding: 0.625rem var(--gutter);
  }

  .rail .brand {
    font-size: 1.125rem;
  }

  .rail .brand img {
    width: 2rem;
    height: 2rem;
  }

  .rail-nav {
    position: fixed;
    z-index: 10;
    left: 0;
    right: 0;
    bottom: 0;
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(0, 1fr);
    gap: 0;
    padding: 0 env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    background: var(--ink);
    border-top: 1px solid var(--line-dark);
  }

  .rail-link {
    flex-direction: column;
    justify-content: center;
    gap: 0.375rem;
    min-height: 4rem;
    padding: 0.5rem 0.25rem;
    font-size: 0.875rem;
  }

  .rail-link .disc {
    width: 1.125rem;
    height: 1.125rem;
  }

  .work {
    padding-bottom: calc(4.5rem + env(safe-area-inset-bottom));
  }

  .rail-foot {
    margin: 0 0 0 auto;
    padding: 0;
    border: 0;
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .rail-foot .who,
  .rail-foot .status {
    display: none;
  }

  .rail-foot .plate {
    width: auto;
    padding: 0 0.875rem;
  }

  .bar {
    padding-top: 1.25rem;
  }

  .bar h1 {
    font-size: 1.875rem;
  }

  .bar .api {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .label-long {
    display: none;
  }

  .label-short {
    display: inline;
  }

  .actions > form,
  .actions > form .plate,
  .actions > a.plate {
    width: 100%;
  }

  .actions .plate {
    justify-content: space-between;
  }

  .wire {
    padding: 1rem 1rem 0.5rem;
  }

  .wire-rows li {
    grid-template-columns: 3.25rem minmax(0, 1fr) 4.75rem;
  }

  .wire-rows .s {
    display: none;
  }

  /* The spec list reads as term over description. */
  .spec {
    grid-template-columns: minmax(0, 1fr);
  }

  .spec dt {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .spec dd {
    padding-top: 0.25rem;
  }
}

/* Short landscape screens: a compact sign band, and the rail scrolls with
   the page instead of pinning. */
@media (min-width: 761px) and (max-height: 560px) {
  .band {
    min-height: 4.5rem;
  }

  .band .brand {
    font-size: 1.375rem;
    gap: 0.75rem;
  }

  .band .brand img {
    width: 2.5rem;
    height: 2.5rem;
  }

  .first {
    min-height: calc(100svh - 4.5rem);
  }

  .rail {
    position: static;
    height: auto;
    min-height: 100vh;
  }
}

/* Touch: every control reaches 44px; the denser desktop sizes stay for mice.
   A press inverts the plate, the feedback hover gives a mouse. */
@media (pointer: coarse) {
  .row-btn,
  .rail .plate,
  .band .plate,
  .clone button {
    min-height: 2.75rem;
  }

  .plate-quiet:active,
  .clone button:active,
  .row-btn:active {
    background: var(--ink);
    color: var(--paper);
  }

  .plate:not(.plate-quiet):active,
  .band .plate:active,
  .rail .plate:active {
    background: var(--paper);
    color: var(--ink);
  }
}

/* Very wide screens: the sign grows with the room; the column stays centered. */
@media (min-width: 1800px) {
  html {
    font-size: 18px;
  }
}

@media (min-width: 2400px) {
  html {
    font-size: 20px;
  }
}

/* ---- Print: ink on paper, no black fields, nothing that only works on a screen. */

@media print {
  @page {
    margin: 16mm 14mm;
  }

  :root {
    --gutter: 0px;
  }

  html {
    font-size: 11pt;
  }

  body {
    background: var(--paper);
  }

  .band,
  .rail,
  .strip,
  .foot,
  pre {
    background: none;
    color: var(--ink);
    box-shadow: none;
  }

  .band,
  .rail {
    border-top: 0;
    border-bottom: 2px solid var(--ink);
    min-height: 0;
    padding: 0 0 0.5rem;
  }

  .brand {
    color: var(--ink);
    min-height: 0;
  }

  /* The logo is a black square: printed on white it needs no field. */
  .brand img {
    filter: invert(1);
  }

  .band-nav,
  .band .plate,
  .actions,
  .note,
  .route-head .plate,
  .line .rider,
  .line output,
  .rail-nav,
  .rail-foot,
  .composer,
  .flash,
  td.act,
  .table-wrap th:last-child,
  .signin,
  .bar .api {
    display: none !important;
  }

  .first {
    min-height: 0;
    display: block;
  }

  .hero {
    padding: 1.5rem 0 1rem;
  }

  .hero h1 {
    font-size: 30pt;
  }

  .route {
    padding: 0 0 1rem;
    break-inside: avoid;
  }

  .strip {
    padding: 0.5rem 0;
    border-top: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    font-size: 10pt;
  }

  .strip span,
  .strip span b {
    color: var(--ink);
  }

  .stops {
    margin: 0;
  }

  .section {
    grid-template-columns: minmax(0, 1fr);
    padding: 1.25rem 0 1.25rem 1.5rem;
    break-inside: avoid;
  }

  pre {
    border: 2px solid var(--ink);
    white-space: pre-wrap;
    font-size: 9pt;
  }

  .section-text a[href^="http"]::after,
  .foot a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
    color: var(--mute);
  }

  .foot {
    border-top: 2px solid var(--ink);
    padding: 0.75rem 0 0;
    color: var(--mute);
  }

  .foot a {
    min-height: 0;
    color: var(--ink);
  }

  .app {
    display: block;
  }

  .rail {
    position: static;
    height: auto;
    display: block;
  }

  .bar,
  .pane {
    padding-left: 0;
    padding-right: 0;
  }

  tr {
    break-inside: avoid;
  }

  thead {
    display: table-header-group;
  }
}

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

  .line.go .rider,
  .pulse.beat {
    animation: none;
  }

  .line.go .stop {
    animation: lit 1ms linear forwards;
  }
}