:root {
  color-scheme: light dark;
  --surface: #ffffff;
  --surface-container: #f0f4f9;
  --surface-container-high: #e9eef6;
  --on-surface: #1f1f1f;
  --on-surface-variant: #444746;
  --outline-variant: #c4c7c5;
  --primary: #0b57d0;
  --on-primary: #ffffff;
  --font: "Google Sans Text", "Google Sans", Roboto, "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "Google Sans", "Google Sans Text", Roboto, "Segoe UI", system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #131314;
    --surface-container: #1e1f20;
    --surface-container-high: #282a2c;
    --on-surface: #e3e3e3;
    --on-surface-variant: #c4c7c5;
    --outline-variant: #444746;
    --primary: #a8c7fa;
    --on-primary: #062e6f;
  }
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--surface);
  color: var(--on-surface);
  font: 400 16px/1.6 var(--font);
}

a {
  color: var(--primary);
}

a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 2px;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--outline-variant);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font: 500 18px/1 var(--font-display);
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 20px;
  color: var(--on-surface-variant);
  font: 500 14px/20px var(--font-display);
  text-decoration: none;
}

.site-nav a:hover {
  background: var(--surface-container);
  color: var(--on-surface);
}

/* Hero */

.hero {
  padding: 56px 0 32px;
}

.hero h1 {
  margin: 0 0 12px;
  font: 400 clamp(32px, 6vw, 44px)/1.15 var(--font-display);
  letter-spacing: -0.5px;
}

.lede {
  max-width: 600px;
  margin: 0 0 28px;
  color: var(--on-surface-variant);
  font-size: 18px;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  height: 40px;
  padding: 0 24px;
  border-radius: 20px;
  font: 500 14px/20px var(--font-display);
  letter-spacing: 0.1px;
  text-decoration: none;
}

.btn--filled {
  background: var(--primary);
  color: var(--on-primary);
}

.btn--tonal {
  background: var(--surface-container-high);
  color: var(--on-surface);
}

/* Preview illustration */

.preview {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 16px;
  margin: 40px 0 8px;
  padding: 20px;
  border-radius: 24px;
  background: var(--surface-container);
}

.preview__side h2 {
  margin: 0 0 6px;
  font: 500 14px/20px var(--font-display);
}

.cal-row {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 32px;
  font-size: 14px;
}

.cal-row--sub {
  padding-left: 16px;
}

.box {
  flex: none;
  width: 16px;
  height: 16px;
  border: 2px solid var(--c);
  border-radius: 3px;
  background: var(--c);
  position: relative;
}

.box::after {
  content: "";
  position: absolute;
  left: 3.5px;
  top: 0.5px;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.box--off {
  background: transparent;
}

.box--off::after {
  display: none;
}

.preview__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  align-content: start;
}

.day {
  min-height: 120px;
  padding: 8px;
  border-radius: 12px;
  background: var(--surface);
}

.day__label {
  margin-bottom: 6px;
  color: var(--on-surface-variant);
  font: 500 12px/16px var(--font-display);
  text-transform: uppercase;
}

.chip {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
  padding: 2px 8px;
  overflow: hidden;
  border-radius: 6px;
  background: var(--c);
  color: var(--t, #fff);
  font: 500 12px/20px var(--font);
  white-space: nowrap;
  text-overflow: ellipsis;
}

.chip::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
}

@media (max-width: 600px) {
  .preview {
    grid-template-columns: 1fr;
  }

  .preview__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .preview__grid .day:nth-child(3) {
    display: none;
  }
}

/* Content */

main section {
  padding: 24px 0;
}

h2 {
  margin: 0 0 12px;
  font: 400 26px/1.3 var(--font-display);
}

h3 {
  margin: 24px 0 8px;
  font: 500 18px/1.4 var(--font-display);
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.features li {
  padding: 20px;
  border-radius: 16px;
  background: var(--surface-container);
}

.features strong {
  display: block;
  margin-bottom: 4px;
  font: 500 16px/1.4 var(--font-display);
}

.features span {
  color: var(--on-surface-variant);
  font-size: 15px;
}

.muted {
  color: var(--on-surface-variant);
}

code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--surface-container);
  font: 14px/1.5 ui-monospace, "Cascadia Mono", Consolas, monospace;
  overflow-wrap: anywhere;
}

/* Policy page */

.policy {
  padding: 40px 0 24px;
}

.policy h1 {
  margin: 0 0 4px;
  font: 400 clamp(28px, 5vw, 36px)/1.2 var(--font-display);
}

.policy ul {
  padding-left: 22px;
}

.policy li {
  margin-bottom: 6px;
}

.callout {
  margin: 16px 0;
  padding: 16px 20px;
  border-radius: 16px;
  background: var(--surface-container);
}

/* Footer */

.site-footer {
  margin-top: 32px;
  padding: 24px 0 40px;
  border-top: 1px solid var(--outline-variant);
  color: var(--on-surface-variant);
  font-size: 13px;
}

.site-footer p {
  margin: 4px 0;
}