/* Cubist – see Website/DESIGN.md */

@font-face {
  font-family: "Inter";
  src: url("/fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --canvas: #000000;
  --surface: #0e0e10;
  --surface-2: #18181b;
  --hairline: rgba(255, 255, 255, 0.1);
  --hairline-strong: rgba(255, 255, 255, 0.22);
  --ink: #f5f5f7;
  --body: #c7c7cc;
  --mute: #98989f;
  --accent: #ffd60a;
  --on-accent: #000000;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --page: 1120px;
  --gutter: 24px;
  --section: 96px;
  --radius-card: 16px;
  --radius-small: 8px;

  color-scheme: dark;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

h1,
h2,
h3 {
  color: var(--ink);
  margin: 0;
  text-wrap: balance;
  hyphens: manual;
}

h1 {
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.15;
  font-weight: 650;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
  text-wrap: pretty;
}

/* Long legal text may break words; short marketing lines stay whole. */
.prose p {
  hyphens: auto;
}

a {
  color: var(--ink);
  text-decoration-color: var(--hairline-strong);
  text-underline-offset: 3px;
  transition: color 150ms ease, text-decoration-color 150ms ease;
}

a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.wrap {
  width: 100%;
  max-width: calc(var(--page) + 2 * var(--gutter));
  margin: 0 auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left));
  padding-right: max(var(--gutter), env(safe-area-inset-right));
}

.skip {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 10;
  padding: 10px 16px;
  border-radius: var(--radius-small);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
}

.skip:focus-visible {
  top: 12px;
}

/* Header */

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 650;
  font-size: 19px;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.brand:hover {
  color: var(--ink);
}

.brand img {
  width: 28px;
  height: 28px;
}

.site-nav {
  display: flex;
  gap: 24px;
  font-size: 15px;
}

.site-nav a {
  color: var(--body);
  text-decoration: none;
  padding: 10px 0;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

/* Hero */

.hero .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: 48px;
  padding-top: 48px;
  padding-bottom: var(--section);
  min-height: min(720px, calc(100dvh - 64px));
}

.hero p.lead {
  margin-top: 24px;
  max-width: 34ch;
  font-size: 19px;
  color: var(--body);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 28px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  font-size: 16px;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 150ms ease, opacity 150ms ease;
}

.button:hover {
  color: var(--on-accent);
  opacity: 0.9;
}

.button:active {
  transform: scale(0.98);
}

/* Before launch the App Store button is a label, not a link. */
.button.is-soon {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--hairline-strong);
}

.text-link {
  font-weight: 500;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.cube {
  position: relative;
  justify-self: center;
  width: min(100%, 420px);
  aspect-ratio: 1;
}

.cube img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  /* The flat grey log cube turns to colour once, like the app's intro. */
  .cube .colour {
    animation: develop 1600ms cubic-bezier(0.4, 0, 0.2, 1) 300ms both;
  }

  @keyframes develop {
    from {
      opacity: 0;
    }

    to {
      opacity: 1;
    }
  }
}

/* Sections */

.section {
  padding: var(--section) 0;
  border-top: 1px solid var(--hairline);
}

.section h2 + p {
  margin-top: 16px;
  max-width: 60ch;
  font-size: 19px;
}

.groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 48px 64px;
  margin-top: 56px;
}

.groups h3 {
  color: var(--mute);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--hairline);
}

.groups dl {
  margin: 0;
}

.groups dt {
  margin-top: 24px;
  color: var(--ink);
  font-weight: 600;
}

.groups dd {
  margin: 6px 0 0;
}

.prices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 48px;
}

.price {
  padding: 32px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  background: var(--surface);
}

.price.is-pro {
  border-color: var(--hairline-strong);
}

.price .amount {
  margin-top: 12px;
  color: var(--ink);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.price .amount small {
  color: var(--mute);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0;
}

.price p:last-child {
  margin-top: 16px;
}

.note {
  margin-top: 24px;
  color: var(--mute);
  font-size: 15px;
}

.privacy-band .wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.privacy-band p {
  font-size: 19px;
}

/* FAQ */

.faq {
  margin-top: 40px;
  max-width: 800px;
}

.faq details {
  border-bottom: 1px solid var(--hairline);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  color: var(--ink);
  font-weight: 600;
  font-size: 18px;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  flex: none;
  color: var(--mute);
  font-size: 24px;
  font-weight: 400;
  line-height: 1;
}

.faq details[open] summary::after {
  content: "\2212";
}

.faq details p {
  padding-bottom: 24px;
  max-width: 64ch;
}

/* Legal and support pages */

.page {
  padding: 56px 0 var(--section);
}

.page .wrap {
  max-width: calc(760px + 2 * var(--gutter));
}

.page h1 {
  font-size: clamp(36px, 5vw, 48px);
}

.page .lead {
  margin-top: 16px;
  font-size: 19px;
}

.prose h2 {
  margin-top: 48px;
  font-size: 24px;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.prose h3 {
  margin-top: 28px;
  font-size: 18px;
}

.prose p,
.prose ul,
.prose address {
  margin-top: 12px;
}

.prose address {
  font-style: normal;
}

.prose ul {
  padding-left: 20px;
}

.prose li + li {
  margin-top: 6px;
}

.prose .meta {
  margin-top: 48px;
  color: var(--mute);
  font-size: 15px;
}

.contact {
  margin-top: 32px;
  padding: 28px 32px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  background: var(--surface);
}

.contact .mail {
  display: inline-block;
  margin-top: 8px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 32px 0 calc(32px + env(safe-area-inset-bottom));
  font-size: 15px;
  color: var(--mute);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.site-footer a {
  color: var(--body);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--ink);
}

/* Mobile */

@media (max-width: 767px) {
  :root {
    --gutter: 20px;
    --section: 64px;
  }

  .site-nav {
    gap: 18px;
  }

  .hero .wrap {
    grid-template-columns: 1fr;
    gap: 24px;
    min-height: 0;
    padding-top: 16px;
  }

  .cube {
    order: -1;
    justify-self: start;
    width: min(44vw, 176px);
  }

  .groups,
  .prices,
  .privacy-band .wrap {
    grid-template-columns: 1fr;
  }

  .groups {
    gap: 40px;
    margin-top: 40px;
  }

  .price {
    padding: 28px 24px;
  }

  .contact {
    padding: 24px;
  }
}