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

@font-face {
  font-family: Newsreader;
  font-style: italic;
  font-display: swap;
  font-weight: 300;
  src: url("fonts/newsreader-italic-latin.woff2") format("woff2");
}

:root {
  --ground: #f2f5f4;
  --raised: #e9eeec;
  --edge: #c2cfcc;
  --ink: #163b45;
  --ink-dim: #4f6a70;
  --on-ink: #f2f5f4;
  --tone-1: #d3a64d;
  --tone-1-bg: #f8e8c2;
  --tone-1-ink: #654200;
  --tone-2: #77afc8;
  --tone-2-bg: #dbeef6;
  --tone-2-ink: #174f67;
  --tone-3: #82b087;
  --tone-3-bg: #e0efdf;
  --tone-3-ink: #295f32;
  --tone-4: #b88fbb;
  --tone-4-bg: #f0e1f1;
  --tone-4-ink: #693b6d;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --serif: Newsreader, Georgia, "Times New Roman", serif;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: "Inter Variable", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink-dim);
}

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

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 0.05em 0.4em;
  border: 1px solid var(--edge);
  border-radius: 5px;
  background: var(--ground);
  color: var(--ink);
  font: inherit;
  font-size: 0.8em;
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
}

/* Page frame */
.page {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.masthead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1.25rem;
  padding-bottom: 1.25rem;
}

.wordmark {
  color: var(--ink);
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  text-decoration: none;
}

/* Hero */
.wash {
  position: absolute;
  inset: 0 0 auto;
  z-index: -1;
  height: min(52rem, 88vh);
  background:
    linear-gradient(
      180deg,
      rgb(242 245 244 / 20%),
      rgb(242 245 244 / 0%) 35%,
      rgb(242 245 244 / 35%) 75%,
      var(--ground) 100%
    ),
    url("images/tidal-inlet.jpg") center 30% / cover no-repeat;
}

body {
  position: relative;
  z-index: 0;
}

.hero {
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
}

.hero-text {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 3rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
}

.hero-lede {
  max-width: 34rem;
  color: var(--ink);
  font-size: 1.125rem;
  line-height: 1.5;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  margin-top: 1.25rem;
}

.button {
  display: inline-block;
  padding: 0.7rem 1.25rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--on-ink);
  font-weight: 600;
  text-decoration: none;
}

.button:hover {
  background: var(--ink-dim);
  color: var(--on-ink);
}

/* Demo */
.demo {
  margin-top: 1.5rem;
}

.demo-window {
  display: grid;
  grid-template-columns: 11.5rem minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--edge);
  border-radius: 14px;
  background: var(--ground);
  box-shadow: 0 30px 70px rgb(22 59 69 / 14%);
  font-size: 0.875rem;
  line-height: 1.35;
}

.demo-bar {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 1.25rem;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--edge);
  color: var(--ink-dim);
  font-size: 0.8125rem;
}

.demo-lights {
  display: inline-flex;
  gap: 0.4rem;
}

.demo-lights i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--edge);
}

.demo-write::before {
  content: "✎ ";
}

.demo-account {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
}

.demo-live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--tone-3);
}

.demo-labels {
  padding: 1.25rem 0.6rem 0.4rem;
  color: var(--ink-dim);
  font-size: 0.75rem;
}

.demo-swatch {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 0.5rem;
  border-radius: 50%;
  vertical-align: 1px;
}

.demo-swatch[data-tone="1"],
.demo-chip[data-tone="1"] {
  background: var(--tone-1);
}

.demo-swatch[data-tone="2"],
.demo-chip[data-tone="2"] {
  background: var(--tone-2);
}

.demo-swatch[data-tone="3"],
.demo-chip[data-tone="3"] {
  background: var(--tone-3);
}

.demo-swatch[data-tone="4"],
.demo-chip[data-tone="4"] {
  background: var(--tone-4);
}

.demo-chip {
  display: inline-block;
  margin-right: 0.4rem;
  padding: 0 0.4rem;
  border-radius: 4px;
  font-size: 0.75rem;
  line-height: 1.5;
}

.demo-chip[data-tone="1"] {
  background: var(--tone-1-bg);
  color: var(--tone-1-ink);
  box-shadow: inset 0 0 0 1px var(--tone-1);
}

.demo-chip[data-tone="2"] {
  background: var(--tone-2-bg);
  color: var(--tone-2-ink);
  box-shadow: inset 0 0 0 1px var(--tone-2);
}

.demo-chip[data-tone="3"] {
  background: var(--tone-3-bg);
  color: var(--tone-3-ink);
  box-shadow: inset 0 0 0 1px var(--tone-3);
}

.demo-chip[data-tone="4"] {
  background: var(--tone-4-bg);
  color: var(--tone-4-ink);
  box-shadow: inset 0 0 0 1px var(--tone-4);
}

.demo-group {
  display: block;
  padding: 0.55rem 0.75rem 0.2rem;
  color: var(--ink-dim);
  font-size: 0.75rem;
}

.demo-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.demo-star {
  color: var(--tone-1);
  font-size: 0.8rem;
}

.demo-meta {
  display: block;
  margin-top: 0.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-sidebar {
  padding: 1.25rem 0.75rem;
  border-right: 1px solid var(--edge);
}

.demo-brand {
  padding: 0 0.6rem 1rem;
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.demo-sidebar ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.demo-sidebar li {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  color: var(--ink-dim);
}

.demo-sidebar li[data-current] {
  background: var(--raised);
  color: var(--ink);
  font-weight: 600;
}

.demo-main {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
}

.demo-title {
  padding: 1rem 1.5rem 0.25rem;
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.demo-list {
  flex: 1;
  margin: 0;
  padding: 0 0.75rem;
  list-style: none;
}

.demo-list:focus-visible {
  outline-offset: -2px;
}

.demo-row {
  display: grid;
  grid-template-columns: 1.6rem 9.5rem minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  max-height: 5rem;
  padding: 0.4rem 0.75rem;
  overflow: hidden;
  border-radius: 8px;
  cursor: default;
  transition:
    max-height 160ms ease,
    padding 160ms ease,
    opacity 120ms ease;
}

.demo-row[aria-selected="true"] {
  background: var(--raised);
}

.demo-row[data-leaving] {
  max-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  opacity: 0;
}

.demo-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.demo-row[data-unread] .demo-dot {
  background: var(--ink);
}

.demo-sender,
.demo-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.demo-row[data-unread] .demo-sender,
.demo-row[data-unread] .demo-subject {
  font-weight: 600;
}

.demo-snippet {
  color: var(--ink-dim);
}

.demo-snippet::before {
  content: "";
}

.demo-time {
  color: var(--ink-dim);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
}

.demo-empty {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem;
  color: var(--ink-dim);
  text-align: center;
}

.demo-empty[hidden] {
  display: none;
}

.demo-empty strong {
  color: var(--ink);
  font-size: 1.125rem;
}

.demo-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  padding: 0.55rem 1.5rem 0.65rem;
  border-top: 1px solid var(--edge);
}

.demo-hints button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.35rem;
  border: 0;
  border-radius: 6px;
  background: none;
  color: var(--ink-dim);
  font: inherit;
  cursor: pointer;
}

.demo-hints button:hover:not(:disabled) {
  background: var(--raised);
  color: var(--ink);
}

.demo-hints button:disabled {
  opacity: 0.45;
  cursor: default;
}

.demo-caption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  margin-top: 1rem;
  color: var(--ink-dim);
  font-size: 0.9375rem;
}

.demo-status {
  min-height: 1.5em;
  color: var(--ink);
}

/* Features */
.features,
.cta {
  margin-top: clamp(4rem, 9vw, 7rem);
}

.features h2 {
  font-size: 2.25rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem 2.5rem;
  margin: 2rem 0 0;
}

.grid > div {
  padding-top: 0.9rem;
  border-top: 3px solid var(--tone-2);
}

.grid > div:nth-child(4n + 2) {
  border-top-color: var(--tone-3);
}

.grid > div:nth-child(4n + 3) {
  border-top-color: var(--tone-1);
}

.grid > div:nth-child(4n + 4) {
  border-top-color: var(--tone-4);
}

.grid dt {
  font-weight: 650;
}

.grid dd {
  margin: 0.35rem 0 0;
  color: var(--ink-dim);
  font-size: 0.9375rem;
}

/* Closing call to action */
.closing {
  display: flex;
  align-items: center;
  min-height: clamp(30rem, 50vw, 40rem);
  margin-top: clamp(4rem, 9vw, 7rem);
  padding: 4rem 0 9rem;
  background:
    linear-gradient(180deg, rgb(16 28 44 / 35%), rgb(16 28 44 / 0%) 60%),
    url("images/coastal-dusk.jpg") center 60% / cover no-repeat;
  color: var(--on-ink);
}

.closing .button {
  background: var(--on-ink);
  color: var(--ink);
}

.closing .button:hover {
  background: var(--raised);
  color: var(--ink);
}

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

.cta {
  width: 100%;
  margin-top: 0;
  text-align: center;
}

.cta h2 {
  font-size: clamp(2.5rem, 6vw, 4rem);
}

.cta p {
  margin-top: 1rem;
  font-size: 1.125rem;
}

.cta .actions {
  justify-content: center;
  margin-top: 1.5rem;
}

/* Footer */
.footer {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
  color: var(--ink-dim);
  font-size: 0.9375rem;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

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

/* Document pages */
.doc {
  max-width: 42rem;
  padding-top: clamp(2rem, 6vw, 4.5rem);
  padding-bottom: 5rem;
}

.doc h1 {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
}

.doc .updated {
  margin-top: 0.75rem;
  color: var(--ink-dim);
}

.doc h2 {
  margin-top: 3rem;
  font-size: 1.75rem;
}

.doc p,
.doc ul,
.doc ol {
  margin-top: 1rem;
}

.doc ul,
.doc ol {
  padding-left: 1.25rem;
}

.doc li + li {
  margin-top: 0.5rem;
}

.doc .lede {
  margin-top: 1.5rem;
  font-size: 1.25rem;
  line-height: 1.5;
}

@media (max-width: 64rem) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 52rem) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .demo-window {
    grid-template-columns: minmax(0, 1fr);
  }

  .demo-sidebar {
    display: none;
  }

  .demo-row {
    grid-template-columns: 1.4rem minmax(0, 1fr) auto;
    gap: 0.6rem;
    max-height: 6rem;
  }

  .wash {
    height: 40rem;
  }

  .demo-text {
    grid-column: 2 / -1;
    grid-row: 2;
  }

  .demo-time {
    grid-column: 3;
    grid-row: 1;
  }

  .demo-title,
  .demo-hints {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .demo-list {
    padding: 0 0.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .demo-row {
    transition: none;
  }
}