/* Tokens from DESIGN.md. Everything below reads them. */
@font-face {
  font-family: "Bricolage Grotesque";
  font-weight: 700;
  font-display: swap;
  src: url("fonts/BricolageGrotesque-700.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Sans";
  font-weight: 400;
  font-display: swap;
  src: url("fonts/InstrumentSans-400.ttf") format("truetype");
}

@font-face {
  font-family: "Instrument Sans";
  font-weight: 600;
  font-display: swap;
  src: url("fonts/InstrumentSans-600.ttf") format("truetype");
}

:root {
  --paper: #f3efe6;
  --surface: #fffdf9;
  --ink: #16201b;
  --ink-2: #4c5750;
  --ink-3: #5c665f;
  --line: #e2dccd;
  --primary: #0e5a47;
  --on-primary: #f4fbf7;
  --primary-soft: #dcebe3;
  --primary-bright: #6fd3b3;
  --negotiating: #9a4b06;
  --negotiating-soft: #fbe9c9;
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Instrument Sans", system-ui, sans-serif;
  --radius: 14px;
  --measure: 60ch;
  --page: 70rem;
  --gap: clamp(1.25rem, 4vw, 2.5rem);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1.0625rem/1.6 var(--font-body);
  font-variant-numeric: tabular-nums;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.75rem);
}

h2 {
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  max-width: 20ch;
}

h3 {
  font-size: 1.25rem;
}

p,
ul,
ol,
dl {
  margin: 0 0 1em;
  max-width: var(--measure);
}

a {
  color: var(--primary);
  text-underline-offset: 0.15em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

.skip {
  position: absolute;
  left: -999rem;
}

.skip:focus {
  left: var(--gap);
  top: 0.5rem;
  background: var(--surface);
  padding: 0.5rem 0.75rem;
}

.site-header,
.site-footer,
main > * {
  max-width: var(--page);
  margin-inline: auto;
  padding-inline: var(--gap);
}

.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-block: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: 700 1.3rem var(--font-display);
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  border-radius: 9px;
}

.site-header nav,
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
}

.site-header nav a,
.site-footer nav a {
  padding-block: 0.7rem;
  color: var(--ink-2);
  font-weight: 600;
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.lead {
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  color: var(--ink-2);
}

.note,
.caption {
  font-size: 0.95rem;
  color: var(--ink-3);
}

.button {
  display: inline-block;
  min-height: 52px;
  padding: 0.85rem 1.6rem;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
  font: 600 1.0625rem/1.4 var(--font-body);
  text-decoration: none;
  cursor: pointer;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Hero */
.hero {
  display: grid;
  gap: var(--gap);
  align-items: center;
  padding-top: clamp(1.5rem, 5vw, 4rem);
}

.hero .lead {
  max-width: 34ch;
}

.phone {
  justify-self: center;
  width: min(300px, 78vw);
  max-height: 560px;
  overflow: hidden;
  border: 9px solid var(--ink);
  border-radius: 40px;
  background: var(--paper);
  box-shadow: 0 30px 60px -30px rgb(22 32 27 / 0.45);
  transform: rotate(2deg);
}

@media (min-width: 54rem) {
  .hero {
    grid-template-columns: 1.25fr 0.75fr;
  }
}

/* Sources: the capture, then what the app reads from it */
.sources {
  display: grid;
  gap: calc(var(--gap) * 1.25) var(--gap);
  max-width: none;
  margin-block: 2.5rem;
  padding: 0;
  list-style: none;
}

@media (min-width: 54rem) {
  .sources {
    grid-template-columns: repeat(3, 1fr);
  }
}

.source h3 {
  margin-bottom: 0.9rem;
}

.capture {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: 0 12px 24px -18px rgb(22 32 27 / 0.5);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--ink-2);
  transform: rotate(-1.5deg);
}

.source:nth-child(2) .capture {
  transform: rotate(1deg);
}

.capture p {
  margin: 0 0 0.35em;
}

.capture p:first-child {
  color: var(--ink);
  font-weight: 600;
}

.becomes {
  width: 2.25rem;
  height: 2.25rem;
  margin: -0.5rem auto -0.5rem 1.5rem;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  font-weight: 600;
  line-height: 2.25rem;
  text-align: center;
  position: relative;
}

.fields {
  padding: 1.4rem 1.1rem 0.6rem;
  border-radius: var(--radius);
  background: var(--primary-soft);
}

.fields div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.45rem;
  border-bottom: 1px solid rgb(14 90 71 / 0.15);
}

.fields div:last-child {
  border-bottom: 0;
}

.fields dt {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
}

.fields dd {
  margin: 0;
  font-weight: 600;
  text-align: right;
}

.caption {
  margin-top: 0.9rem;
}

/* Steps */
.steps {
  display: grid;
  gap: var(--gap);
  max-width: none;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

@media (min-width: 54rem) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

.steps li {
  padding-top: 1rem;
  border-top: 3px solid var(--ink);
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  display: block;
  margin-bottom: 0.4rem;
  font: 700 3rem/1 var(--font-display);
  color: var(--primary);
}

/* Why mobile-only: three scenes of the reader's day */
main > .mobile {
  max-width: none;
  padding-inline: max(var(--gap), calc((100% - var(--page)) / 2 + var(--gap)));
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.mobile h2 {
  max-width: 18ch;
  font-size: clamp(2rem, 5.5vw, 3.5rem);
}

.scene {
  display: grid;
  gap: 1rem var(--gap);
  align-items: center;
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

.scene img {
  width: 100%;
  max-width: 26rem;
  border-radius: calc(var(--radius) * 2);
  background: var(--paper);
}

.scene h3 {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.scene p {
  font-size: 1.15rem;
  color: var(--ink-2);
  max-width: 34ch;
}

@media (min-width: 54rem) {
  .scene {
    grid-template-columns: 1fr 1fr;
  }

  .scene:nth-of-type(even) img {
    order: 2;
    justify-self: end;
  }
}

/* Questions */
details {
  max-width: var(--measure);
  border-bottom: 1px solid var(--line);
}

summary {
  padding-block: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.support {
  margin-top: 2rem;
}

/* Who is behind */
.signature {
  padding: clamp(1.5rem, 5vw, 3rem);
  border-radius: calc(var(--radius) * 2);
  background: var(--primary-soft);
}

main > .signature {
  max-width: calc(var(--page) - 2 * var(--gap));
  margin-block: clamp(1rem, 4vw, 3rem);
}

@media (max-width: 72rem) {
  main > .signature {
    margin-inline: var(--gap);
  }
}

.signature p:last-child {
  margin-bottom: 0;
}

/* Final action, on ink */
main > .notify {
  max-width: none;
  margin-top: clamp(2rem, 6vw, 4rem);
  padding-inline: max(var(--gap), calc((100% - var(--page)) / 2 + var(--gap)));
  background: var(--ink);
  color: var(--on-primary);
}

.notify h2 {
  color: var(--primary-bright);
}

.notify-form {
  max-width: 36rem;
  margin-top: 1.5rem;
}

.notify-form label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.notify-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.notify-row input {
  flex: 1 1 16rem;
  min-height: 52px;
  padding: 0.8rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  font: inherit;
}

.notify .button {
  background: var(--primary-bright);
  color: var(--ink);
}

.notify a:focus-visible,
.notify input:focus-visible,
.notify button:focus-visible {
  outline-color: var(--primary-bright);
}

.trap {
  position: absolute;
  left: -999rem;
}

/* Text pages: header, text and footer share one narrower column */
.text-page {
  --page: 46rem;
}

.text-page p,
.text-page ul {
  max-width: none;
}

.prose {
  padding-block: clamp(2rem, 6vw, 4rem);
}

.prose h1 {
  font-size: clamp(2rem, 6vw, 3.25rem);
}

.prose h2 {
  margin-top: 1.8em;
  font-size: 1.5rem;
  max-width: none;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.25rem 2rem;
  padding-block: 1.5rem;
  color: var(--ink-3);
  font-size: 0.95rem;
}

.site-footer p {
  margin: 0;
}