/* Restyle by changing these variables first. DESIGN.md explains each color's job. */
@font-face {
  font-family: "Antic Slab";
  src: url("fonts/antic-slab-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Rasa";
  src: url("fonts/rasa-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Cantarell";
  src: url("fonts/cantarell-latin-400-normal.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Cantarell";
  src: url("fonts/cantarell-latin-700-normal.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light;
  --color-text: #13293d;
  --color-muted: #4a5d6e;
  --color-background: #fcfcfa;
  --color-surface: #ffffff;
  --color-tint: #e4eff5;
  --color-border: #c9d7e0;
  --color-primary: #114062;
  --color-on-primary: #ffffff;
  --color-on-primary-muted: #cfe0eb;
  --color-accent: #f6b93b;
  --color-accent-hover: #eba91f;
  --color-on-accent: #13293d;
  --color-contour: #b3cddc;
  --color-contour-on-primary: #2f6385;
  --color-hover: #d6e8f3;
  --font-display: "Antic Slab", Rockwell, Georgia, serif;
  --font-body: "Rasa", Georgia, "Times New Roman", serif;
  --font-ui: "Cantarell", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --page-width: 1120px;
  --page-gutter: 20px;
  --space-xs: 4px;
  --space-s: 8px;
  --space-m: 16px;
  --space-ml: 24px;
  --space-l: 32px;
  --space-xl: 64px;
  --space-2xl: 96px;
  --radius-control: 8px;
  --radius-card: 14px;
  --radius-panel: 28px;
  --radius-pill: 999px;
  --header-height: 88px;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1.1875rem;
  line-height: 1.5;
}

a {
  color: inherit;
  text-underline-offset: 3px;
}

p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  font-synthesis: none;
  font-weight: 400;
  line-height: 1.15;
  text-wrap: balance;
}

/* Antic Slab's default word gap reads like a double space at display sizes. */
h1,
h2 {
  word-spacing: -0.12em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 3.875rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.4375rem);
}

h3 {
  font-family: var(--font-ui);
  font-size: 1.125rem;
  font-weight: 700;
}

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

.skip-link {
  position: absolute;
  z-index: 2;
  left: var(--page-gutter);
  top: -100px;
  padding: var(--space-s) var(--space-m);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  font-family: var(--font-ui);
}

.skip-link:focus {
  top: var(--space-s);
}

/* Header */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-s) var(--space-m);
  max-width: calc(var(--page-width) + 2 * var(--page-gutter));
  margin: 0 auto;
  padding: var(--space-m) var(--page-gutter);
}

.brand {
  font-family: var(--font-display);
  font-size: 1.375rem;
  text-decoration: none;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-ml);
  order: 1;
  width: 100%;
}

.site-nav a {
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 1rem;
  text-decoration: none;
  transition: color 150ms ease-out;
}

.site-nav a:hover {
  color: var(--color-text);
  text-decoration: underline;
}

/* Buttons */
.button {
  display: inline-block;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  transition: background-color 150ms ease-out, border-color 150ms ease-out;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.button-primary:hover {
  background: var(--color-accent-hover);
}

.button-secondary {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.button-secondary:hover {
  background: var(--color-hover);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s) var(--space-m);
}

/* Sections */
main > section {
  max-width: calc(var(--page-width) + 2 * var(--page-gutter));
  margin: 0 auto;
  padding: var(--space-xl) var(--page-gutter) 0;
}

.section-intro {
  margin: var(--space-s) 0 var(--space-l);
  color: var(--color-muted);
}

/* Line motif: a burst of voice on a phone line. Used in the hero and closing panels only. */
.contour-defs {
  position: absolute;
  width: 0;
  height: 0;
}

.contour {
  position: absolute;
  z-index: -1;
  fill: none;
  stroke: var(--color-contour);
  stroke-width: 1.5;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent, black 30%);
  mask-image: linear-gradient(180deg, transparent, black 30%);
}

.contour-defs path {
  vector-effect: non-scaling-stroke;
}

.contour-line-accent {
  stroke: var(--color-accent);
  stroke-width: 2.5;
}

/* Hero */
main > section.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  max-width: var(--page-width);
  margin: var(--space-s) var(--page-gutter) 0;
  padding: var(--space-l) var(--space-ml) 136px;
  background: var(--color-tint);
  border-radius: var(--radius-panel);
}

.hero .contour {
  right: -48px;
  bottom: -28px;
  width: calc(100% + 96px);
  height: 150px;
}

.hero h1 {
  max-width: 13em;
}

.hero-subhead {
  max-width: 34em;
  margin: var(--space-m) 0 var(--space-l);
  font-size: 1.375rem;
  line-height: 1.4;
}

.hero-status {
  margin: var(--space-ml) 0 0;
  color: var(--color-muted);
  font-size: 1.125rem;
}

/* Capabilities */
.capability-list {
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}

.capability {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  padding: 14px var(--space-m);
  font-family: var(--font-ui);
  font-size: 1rem;
}

.capability + .capability {
  border-top: 1px solid var(--color-border);
}

/* How it works */
.step-list {
  display: grid;
  gap: var(--space-l);
  margin: var(--space-l) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.step {
  position: relative;
  padding-left: 56px;
  counter-increment: step;
}

.step::before {
  content: counter(step);
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--color-tint);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-pill);
  color: var(--color-primary);
  font-family: var(--font-ui);
  font-weight: 700;
}

/* The line that joins each step to the next. */
.step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 48px;
  bottom: calc(8px - var(--space-l));
  left: 19px;
  width: 1.5px;
  background: var(--color-border);
}

.step p {
  margin: var(--space-s) 0 0;
  color: var(--color-muted);
}

/* Plans */
.plan-grid {
  display: grid;
  gap: var(--space-m);
}

.plan-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
  padding: var(--space-ml);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}

.plan-price {
  margin: 0;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}

.plan-features {
  flex-grow: 1;
  margin: 0;
  padding-left: 1.25em;
}

.plan-link {
  align-self: flex-start;
  color: var(--color-primary);
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
}

/* Closing call to action */
main > section.closing {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  max-width: var(--page-width);
  margin: var(--space-xl) var(--page-gutter) 0;
  padding: var(--space-xl) var(--space-ml) 136px;
  background: var(--color-primary);
  border-radius: var(--radius-panel);
  color: var(--color-on-primary);
}

.closing .contour {
  right: -48px;
  bottom: -28px;
  width: calc(100% + 96px);
  height: 150px;
  stroke: var(--color-contour-on-primary);
}

.closing p {
  max-width: 34em;
  margin: var(--space-s) 0 var(--space-ml);
}

.closing .closing-email {
  margin: var(--space-m) 0 0;
  color: var(--color-on-primary-muted);
}

.closing :focus-visible {
  outline-color: var(--color-on-primary);
}

/* Footer */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-s) var(--space-m);
  max-width: calc(var(--page-width) + 2 * var(--page-gutter));
  margin: 0 auto;
  padding: var(--space-l) var(--page-gutter);
  color: var(--color-muted);
  font-family: var(--font-ui);
  font-size: 1rem;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: var(--space-m);
}

/* Privacy and terms pages */
.legal {
  max-width: calc(44rem + 2 * var(--page-gutter));
  margin: 0 auto;
  padding: var(--space-l) var(--page-gutter) var(--space-xl);
}

.legal h1 {
  font-size: clamp(2.25rem, 5vw, 3.0625rem);
}

.legal h2 {
  margin-top: var(--space-l);
  font-size: 1.5625rem;
}

.legal h3 {
  margin-top: var(--space-ml);
}

.legal h2 + p,
.legal h3 + p {
  margin-top: var(--space-s);
}

.legal ul {
  margin: var(--space-s) 0 var(--space-m);
  padding-left: 1.25em;
}

.legal li + li {
  margin-top: var(--space-xs);
}

.legal-date {
  margin: var(--space-s) 0 var(--space-l);
  color: var(--color-muted);
}

.legal-draft {
  margin: 0 0 var(--space-l);
  padding: var(--space-s) var(--space-m);
  background: var(--color-tint);
  border-radius: var(--radius-control);
  font-family: var(--font-ui);
  font-size: 1rem;
}

/* Tablet and up */
@media (min-width: 768px) {
  html {
    scroll-padding-top: var(--header-height);
  }

  .site-header {
    position: sticky;
    z-index: 1;
    top: 0;
    background: var(--color-background);
  }

  .site-nav {
    order: 0;
    width: auto;
    margin-left: auto;
  }

  main > section {
    padding-top: var(--space-2xl);
  }

  main > section.hero {
    margin-top: var(--space-s);
    padding: var(--space-2xl) var(--space-xl);
  }

  .hero .contour,
  .closing .contour {
    right: -40px;
    bottom: auto;
    top: 50%;
    width: 46%;
    height: 118%;
    transform: translateY(-50%);
    -webkit-mask-image: linear-gradient(90deg, transparent, black 40%);
    mask-image: linear-gradient(90deg, transparent, black 40%);
  }

  .hero h1,
  .hero-subhead,
  .hero-status {
    max-width: 58%;
  }

  .step-list,
  .plan-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .step {
    padding: 56px var(--space-m) 0 0;
  }

  .step:not(:last-child)::after {
    top: 19px;
    right: 8px;
    bottom: auto;
    left: 48px;
    width: auto;
    height: 1.5px;
  }

  main > section.closing {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
  }

  .closing h2,
  .closing p {
    max-width: 58%;
  }
}

/* Laptop and up, where a page margin takes over from the side gutters. */
@media (min-width: 1000px) {
  #capabilities {
    display: grid;
    grid-template-columns: 4fr 8fr;
    grid-template-rows: auto 1fr;
    column-gap: var(--space-xl);
  }

  #capabilities h2,
  #capabilities .section-intro {
    grid-column: 1;
  }

  .capability-list {
    grid-column: 2;
    grid-row: 1 / span 2;
  }
}

@media (min-width: 1160px) {
  main > section.hero,
  main > section.closing {
    margin-inline: auto;
  }
}