/* tweet-emotion-pipeline demo page: design tokens, layout, and components. */

:root {
  /* Color — Z-identity bones (zulqarnainhassan.com navy/cream/blues, per Z Sep 2026:
     project pages share the site identity for consistency) with this project's own
     catchy accent mapped to the task: sunny yellow #FFD93D = happiness, blue = sadness. */
  --cream: #FBF8F2;
  --panel: #FFFFFF;
  --line: rgba(19, 35, 59, 0.10);
  --ink: #13233B;
  --muted: #5B6B80;
  --navy: #0A1628;
  --deep: #070E1C;
  --band-2: #0D1B33;
  --line-d: #1E3355;
  --chip-d: #0F1F38;
  --fog: #EAF0F9;
  --mist: #A2B4CE;
  --blue: #3B96FF;
  --blue-ink: #1560D6;
  --coral: #FFD93D;
  --coral-ink: #A97B00;
  /* Yellow-ink is AA for large text only on cream, so small yellow text
     (chips, link hovers, counters, stage numbers) uses the deep yellow at 5.5:1+. */
  --coral-deep: #7E5B00;

  /* Type */
  --display: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --t: 250ms;
  --reveal: 950ms;

  /* Layout */
  --wrap: 1160px;
  --gutter: clamp(20px, 5vw, 40px);
  --r: 6px;
  --r-lg: 8px;
  --sp: clamp(56px, 8vw, 96px);
}

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

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

body {
  margin: 0;
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
}

/* Author display values on grids and flex boxes would otherwise beat the user agent's
   [hidden] rule, so the attribute is made to win here. */
[hidden] {
  display: none !important;
}

a {
  color: var(--blue-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--t) var(--ease), text-decoration-color var(--t) var(--ease);
}

a:hover {
  color: var(--coral-deep);
  text-decoration-thickness: 2px;
}

.band-dark a {
  color: var(--blue);
}

.band-dark a:hover {
  color: var(--coral);
}

:focus-visible {
  outline: 2px solid var(--blue-ink);
  outline-offset: 2px;
  border-radius: 4px;
}

.band-dark :focus-visible {
  outline-color: var(--blue);
}

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

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 10;
  padding: 8px 12px;
  background: var(--panel);
  color: var(--ink);
  font-weight: 500;
  border-radius: var(--r);
}

.skip:focus {
  left: 8px;
}

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

/* Type helpers */

.kicker {
  display: block;
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.band-dark .kicker {
  color: var(--mist);
}

h1 {
  margin: 0 0 20px;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.125rem, 5.2vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.028em;
  max-width: 20ch;
}

/* The payoff phrase: Fraunces italic with a yellow rule painted on the inline box,
   0.05em thick, just under the baseline. It survives line wraps at 375 px. */
h1 em {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 550;
  letter-spacing: -0.01em;
  background-image: linear-gradient(var(--coral), var(--coral));
  background-repeat: no-repeat;
  background-size: 100% 0.05em;
  background-position: 0 calc(100% - 0.13em);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(1.625rem, 2.8vw, 2.125rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
}

h2 em {
  font-style: italic;
  font-weight: 600;
}

h3 {
  margin: 0;
  font-family: var(--body);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.3;
}

.lede,
.sec-head p {
  margin: 0;
  color: var(--muted);
  max-width: 62ch;
}

.band-dark .lede {
  color: var(--mist);
  font-size: clamp(1.0625rem, 1.5vw, 1.1875rem);
}

.mono {
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.todo {
  display: inline-block;
  padding: 0 6px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 0.85em;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0;
  text-transform: none;
  background: rgba(255, 217, 61, 0.18);
  color: var(--coral-deep);
  vertical-align: baseline;
}

.band-dark .todo {
  color: var(--coral);
}

.noscript {
  margin: 20px 0 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--coral-deep);
}

/* Mark and wordmark */

.mark {
  display: block;
  width: 28px;
  height: 28px;
  flex: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  min-width: 0;
}

.wordmark {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog);
  white-space: nowrap;
}

.wordmark .dot {
  color: var(--coral);
}

/* Hero */

.band-dark {
  background: var(--navy);
  color: var(--fog);
}

.hero {
  padding: clamp(20px, 3vw, 28px) 0 clamp(40px, 6vw, 72px);
  background: radial-gradient(900px 420px at 85% -20%, rgba(59, 150, 255, 0.16), transparent 60%),
    linear-gradient(180deg, var(--navy), var(--deep));
  border-bottom: 1px solid var(--line-d);
}

.brand-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
  margin: 0 0 clamp(36px, 5vw, 60px);
}

.repo-link {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}

.repo-link:hover {
  text-decoration: underline;
  text-decoration-thickness: 1px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}

.eyebrow .ver,
.eyebrow .todo {
  letter-spacing: 0.02em;
  text-transform: none;
}

.eyebrow .todo {
  letter-spacing: 0;
}

.livedot {
  position: relative;
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--coral);
  flex: none;
}

.livedot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--coral);
  opacity: 0.7;
  animation: pulse 2s var(--ease) infinite;
}

@keyframes pulse {
  0% {
    transform: scale(0.7);
    opacity: 0.8;
  }

  100% {
    transform: scale(2);
    opacity: 0;
  }
}

.hero .lede + .lede {
  margin-top: 12px;
}

.disclaimer {
  font-size: 0.9375rem;
}

/* Sections */

.section {
  padding: var(--sp) 0 0;
}

.section:last-of-type {
  padding-bottom: var(--sp);
}

.sec-head {
  margin: 0 0 28px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

/* Receipts */

.receipts {
  padding-top: clamp(32px, 5vw, 56px);
}

.receipt-note {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.tiles {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 18px 16px;
  min-width: 0;
  transition: transform var(--t) var(--ease), border-color var(--t) var(--ease);
}

.tile:hover {
  transform: translateY(-4px);
  border-color: var(--coral-ink);
}

.tile:hover .tile-src a {
  color: var(--coral-deep);
}

.tile .kicker {
  margin: 0;
}

.tile-v {
  font-family: var(--mono);
  font-weight: 500;
  font-size: 1.625rem;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
  min-height: 1.15em;
  overflow-wrap: anywhere;
}

.tile-v .todo {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0;
  vertical-align: middle;
}

.tile-l {
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1.4;
}

.tile-s {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.tile-src {
  margin-top: auto;
  padding-top: 8px;
  font-family: var(--mono);
  font-size: 0.75rem;
}

/* Try it: presets, textarea, and result */

.try-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 24px;
  align-items: start;
}

.presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
}

.preset-desc {
  margin: 0 0 20px;
  font-size: 0.9375rem;
  color: var(--muted);
  min-height: 1.5em;
}

.preset-desc .mono {
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color var(--t) var(--ease), border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.btn:hover {
  border-color: var(--coral-ink);
  color: var(--coral-deep);
}

.btn[aria-pressed="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--fog);
}

.btn[aria-pressed="true"]:hover {
  border-color: var(--coral);
  color: var(--fog);
}

.btn-primary {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--fog);
  padding: 12px 20px;
}

.btn-primary:hover {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--navy);
}

.btn-primary[disabled] {
  opacity: 0.6;
  cursor: default;
}

.btn-primary[disabled]:hover {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--fog);
}

.btn-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 0.75rem;
  background: transparent;
  border-color: var(--line-d);
  color: var(--fog);
}

.btn-copy:hover {
  border-color: var(--coral);
  color: var(--coral);
}

form.scorer {
  padding: clamp(18px, 3vw, 28px);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.field label {
  font-family: var(--body);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.3;
}

.hint {
  margin: 0 0 8px;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--muted);
}

textarea {
  display: block;
  width: 100%;
  min-height: 150px;
  padding: 12px 14px;
  border: 1px solid var(--muted);
  border-radius: var(--r);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.9375rem;
  line-height: 1.55;
  resize: vertical;
  transition: border-color var(--t) var(--ease);
}

textarea:hover {
  border-color: var(--ink);
}

textarea[aria-invalid="true"] {
  border-color: var(--coral-ink);
  box-shadow: inset 0 0 0 1px var(--coral-ink);
}

.counter {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  text-align: right;
}

.counter.over {
  color: var(--coral-deep);
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.form-actions .mono {
  color: var(--muted);
}

.result {
  position: sticky;
  top: 20px;
  padding: clamp(18px, 3vw, 28px);
}

.result .kicker {
  margin-bottom: 14px;
}

.result-empty {
  margin: 0;
  color: var(--muted);
}

.result-body {
  opacity: 1;
}

/* The one big moment on the page. */
.result-body.fade {
  opacity: 0;
  transform: translateY(8px);
}

.result-body.fade.in {
  opacity: 1;
  transform: none;
  transition: opacity var(--reveal) var(--ease), transform var(--reveal) var(--ease);
}

.result-metric {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  line-height: 1;
  letter-spacing: -0.028em;
  color: var(--coral-ink);
}

.result-label {
  margin: 6px 0 0;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.375rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.result-metric-l {
  display: block;
  margin: 6px 0 18px;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* Two-tone probability bar: sadness share on the left, happiness share on the right. */
.split {
  margin: 0 0 18px;
}

.split-bar {
  display: flex;
  height: 12px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--cream);
  overflow: hidden;
}

.split-sad {
  display: block;
  height: 100%;
  width: 50%;
  background: var(--blue-ink);
  transition: width var(--reveal) var(--ease);
}

.split-happy {
  display: block;
  height: 100%;
  flex: 1 1 0;
  background: var(--coral-ink);
}

.split-labels {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.swatch {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  border-radius: 2px;
  vertical-align: middle;
}

.swatch-sad {
  background: var(--blue-ink);
}

.swatch-happy {
  background: var(--coral-ink);
}

/* Why: per-term contributions as diverging bars around a centre line. */
.why {
  margin: 0 0 18px;
}

.why .kicker {
  margin-bottom: 6px;
}

.why-note {
  margin: 0 0 8px;
  font-size: 0.8125rem;
  color: var(--muted);
}

.why-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.why-row {
  display: grid;
  grid-template-columns: minmax(0, 12ch) minmax(0, 1fr) 64px;
  gap: 12px;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid var(--line);
}

.why-row:last-child {
  border-bottom: 0;
}

.why-term {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.why-v {
  justify-self: end;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.why-bar {
  position: relative;
  display: block;
  height: 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--cream);
  overflow: hidden;
}

.why-bar::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: rgba(19, 35, 59, 0.28);
}

.why-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  transition: width var(--reveal) var(--ease);
}

.why-fill.pos {
  left: 50%;
  background: var(--coral-ink);
  border-radius: 0 4px 4px 0;
}

.why-fill.neg {
  right: 50%;
  background: var(--blue-ink);
  border-radius: 4px 0 0 4px;
}

.result-truth {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

.result-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 6px 16px;
  margin: 0 0 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.result-meta dt {
  color: var(--muted);
}

.result-meta dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.result-meta .empty {
  color: var(--muted);
}

.result-disclaimer {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.result-error {
  margin: 0;
  padding: 0 0 0 14px;
  border-left: 3px solid var(--coral-ink);
}

.result-error h3 {
  margin-bottom: 8px;
  color: var(--coral-deep);
}

.result-error ul {
  margin: 0;
  padding-left: 18px;
  font-size: 0.9375rem;
}

.result-error li + li {
  margin-top: 4px;
}

.result-error p {
  margin: 0;
  font-size: 0.9375rem;
}

/* Pipeline strip */

.stages {
  counter-reset: stage;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 22px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.stage {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 14px 12px;
  min-width: 0;
}

/* A thin connector to the previous card, drawn across the grid gap. */
.stage + .stage::before {
  content: "";
  position: absolute;
  top: 25px;
  left: -23px;
  width: 23px;
  height: 1px;
  background: rgba(19, 35, 59, 0.28);
}

.stage-name {
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
}

.stage-name::before {
  counter-increment: stage;
  content: counter(stage, decimal-leading-zero) " ";
  color: var(--coral-deep);
}

.stage-desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--muted);
}

.stage-outs-l {
  display: block;
  margin: auto 0 0;
  padding-top: 8px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.stage-outs {
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.6875rem;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.code-block {
  position: relative;
  margin: 0;
  padding: 18px 18px 18px;
  background: var(--band-2);
  border: 1px solid var(--line-d);
  border-radius: var(--r-lg);
  color: var(--fog);
  min-width: 0;
}

.code-block .kicker {
  margin: 0 96px 10px 0;
  color: var(--mist);
}

.code-block pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.code-block code {
  font-family: inherit;
}

.code-block .todo {
  color: var(--coral);
}

.code-note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-d);
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--mist);
  max-width: 80ch;
}

.code-note code {
  font-family: inherit;
  color: var(--fog);
}

/* Top terms */

.terms-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.terms-col {
  padding: clamp(18px, 3vw, 24px);
  min-width: 0;
}

.terms-col .kicker {
  margin-bottom: 12px;
}

.terms-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.term-row {
  display: grid;
  grid-template-columns: minmax(0, 14ch) minmax(0, 1fr) 56px;
  gap: 12px;
  align-items: center;
  padding: 5px 0;
  border-bottom: 1px solid var(--line);
}

.term-row:last-child {
  border-bottom: 0;
}

.term-name {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.term-v {
  justify-self: end;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.bar {
  height: 8px;
  border-radius: 4px;
  border: 1px solid var(--line);
  background: var(--cream);
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: 4px;
  background: var(--blue-ink);
}

.terms-happy .bar span {
  background: var(--coral-ink);
}

.terms-sad .bar span {
  background: var(--blue-ink);
}

.terms-empty {
  margin: 0;
  padding: clamp(18px, 3vw, 28px);
  color: var(--muted);
}

.method-note {
  margin: 12px 0 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Run it yourself */

.run-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.run-links {
  margin: 18px 0 0;
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Footer */

.foot {
  margin-top: var(--sp);
  padding: 36px 0 40px;
  border-top: 1px solid var(--line-d);
}

.foot-name {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.foot-role {
  margin: 8px 0 18px;
  color: var(--mist);
  font-size: 0.9375rem;
}

.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.foot-cards {
  margin-top: 14px;
}

.foot-note {
  margin: 20px 0 0;
  font-size: 0.875rem;
  color: var(--mist);
  max-width: 70ch;
}

/* Responsive */

@media (max-width: 1000px) {
  .tiles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .try-grid {
    grid-template-columns: 1fr;
  }

  .result {
    position: static;
  }

  .stages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* The fourth card opens the second row, so it has no card to its left. */
  .stage:nth-child(4)::before {
    display: none;
  }
}

@media (max-width: 640px) {
  .tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tiles li:last-child {
    grid-column: span 2;
  }

  .run-grid,
  .terms-grid {
    grid-template-columns: 1fr;
  }

  /* The strip stacks; connectors turn vertical and run through the gap above each card. */
  .stages {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .stage + .stage::before {
    top: -19px;
    left: 24px;
    width: 1px;
    height: 19px;
  }

  .stage:nth-child(4)::before {
    display: block;
  }
}

@media (max-width: 480px) {
  .tiles {
    grid-template-columns: 1fr;
  }

  .tiles li:last-child {
    grid-column: auto;
  }

  .why-row {
    grid-template-columns: minmax(0, 9ch) minmax(0, 1fr) 60px;
    gap: 8px;
  }

  .term-row {
    grid-template-columns: minmax(0, 11ch) minmax(0, 1fr) 52px;
    gap: 8px;
  }

  .form-actions .btn-primary {
    width: 100%;
  }

  .wordmark {
    font-size: 1rem;
  }
}

/* Reduced motion is law: a static fallback for every animation. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .result-body.fade,
  .result-body.fade.in {
    opacity: 1;
    transform: none;
  }

  .livedot::after {
    transform: none;
    opacity: 0.5;
  }

  .tile:hover {
    transform: none;
  }
}