/* BetterTabs site. Colours and folder tabs come from the extension itself (extension/sidepanel.css). */

:root {
  color-scheme: light dark;
  --paper: #edf1f5;
  --field: #ffffff;
  --ink: #18222e;
  --muted: #586472;
  --rule: #d2d9e1;
  --hover: #e0e6ed;
  --mark: #ffe45c;
  --mark-ink: #18222e;
  --focus: #2f6feb;
  --tint-mix: 30%;
  --serif: ui-serif, "New York", "Iowan Old Style", Charter, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #161b22;
    --field: #0f1419;
    --ink: #e3e8ee;
    --muted: #97a3b0;
    --rule: #29313b;
    --hover: #212932;
    --focus: #7aa7ff;
    --tint-mix: 36%;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 1rem/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.12;
}

p {
  margin: 0;
}

a {
  color: inherit;
}

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

code,
kbd {
  font-family: var(--mono);
  font-size: 0.9em;
}

code {
  padding: 0.05em 0.35em;
  border-radius: 0.3rem;
  background: var(--hover);
}

kbd {
  padding: 0.1em 0.4em;
  border: 1px solid var(--rule);
  border-bottom-width: 2px;
  border-radius: 0.3rem;
  background: var(--field);
}

.wrap {
  width: min(100% - 2.5rem, 68rem);
  margin-inline: auto;
}

.skip {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 10;
  padding: 0.5rem 0.875rem;
  border-radius: 0.5rem;
  background: var(--field);
  translate: 0 -200%;
}

.skip:focus {
  translate: 0;
}

/* Nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  background: color-mix(in oklab, var(--paper) 82%, transparent);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: saturate(1.6) blur(14px);
}

.nav .wrap {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 3.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: auto;
  font-weight: 700;
  text-decoration: none;
}

.brand img {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 0.4rem;
}

.nav a:not(.brand):not(.button) {
  color: var(--muted);
  font-size: 0.9375rem;
  text-decoration: none;
}

.nav a:not(.brand):not(.button):hover {
  color: var(--ink);
}

/* Buttons: the highlighter yellow is the current-tab colour in the extension */

.button {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.5rem 1.25rem;
  border: 2px solid var(--ink);
  border-radius: 0.625rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.button-primary {
  background: var(--mark);
  color: var(--mark-ink);
  box-shadow: 0.1875rem 0.1875rem 0 var(--ink);
  transition: translate 0.12s ease, box-shadow 0.12s ease;
}

.button-primary:hover {
  translate: 0.0625rem 0.0625rem;
  box-shadow: 0.125rem 0.125rem 0 var(--ink);
}

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

.nav .button {
  min-height: 2.25rem;
  padding: 0.25rem 0.875rem;
  font-size: 0.9375rem;
  box-shadow: none;
}

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

@media (max-width: 40rem) {
  .nav a:not(.brand):not(.button) {
    display: none;
  }
}

/* Hero */

.hero {
  padding: 4.5rem 0 1rem;
}

.hero h1 {
  max-width: 14ch;
  font: 800 clamp(2.75rem, 7vw, 5rem) / 1 var(--serif);
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.hero .lede {
  max-width: 40rem;
  margin-top: 1.5rem;
  color: var(--muted);
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.facts {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.875rem;
}

/* The demo: a Chrome window with the real panel running in the side panel */

.window {
  display: grid;
  grid-template-rows: auto 1fr;
  margin-top: 3.5rem;
  border: 2px solid var(--ink);
  border-radius: 0.875rem;
  background: var(--field);
  box-shadow: 0.5rem 0.5rem 0 var(--ink);
  overflow: hidden;
}

.strip {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  padding: 0.5rem 0.625rem 0;
  background: var(--hover);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}

.strip span {
  display: grid;
  flex: 1 1 0;
  place-items: center;
  min-width: 0;
  max-width: 2.75rem;
  height: 1.875rem;
  border-radius: 0.5rem 0.5rem 0 0;
  background: color-mix(in oklab, var(--base) 34%, var(--paper));
  font-size: 0.6875rem;
  font-weight: 700;
  overflow: hidden;
}

.strip span.now {
  flex: 0 0 9rem;
  max-width: none;
  place-items: center start;
  padding-left: 0.625rem;
  background: var(--field);
  white-space: nowrap;
}

.strip .strip-note {
  display: block;
  flex: none;
  align-self: center;
  max-width: none;
  height: auto;
  margin-left: auto;
  padding-left: 0.75rem;
  background: none;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 400;
  white-space: nowrap;
}

.stage {
  display: grid;
  grid-template-columns: 1fr minmax(0, 24rem);
  min-height: 34rem;
}

.page {
  display: grid;
  align-content: start;
  gap: 0.875rem;
  padding: 2rem;
}

.page i {
  display: block;
  height: 0.75rem;
  border-radius: 0.375rem;
  background: var(--hover);
}

.page i:first-child {
  width: 45%;
  height: 1.75rem;
  margin-bottom: 0.75rem;
}

.demo {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 34rem;
  border: 0;
  border-left: 2px solid var(--ink);
  background: var(--paper);
}

.demo-note {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

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

  .page {
    display: none;
  }

  /* Fewer, wider tabs: squeezed to slivers they only look broken on a phone. */
  .strip span:nth-child(n + 9):not(.strip-note) {
    display: none;
  }

  .strip span {
    max-width: 2.25rem;
  }

  .strip span.now {
    flex-basis: 5.5rem;
  }

  .demo {
    border-left: 0;
  }
}

/* Sections */

section {
  padding: 5.5rem 0 0;
}

section > .wrap > h2,
.section-head h2 {
  max-width: 22ch;
  font: 800 clamp(1.875rem, 4.2vw, 2.75rem) / 1.08 var(--serif);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.section-head p {
  max-width: 38rem;
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.125rem;
}

/* How it works */

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 2rem;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.steps li {
  padding-top: 1rem;
  border-top: 2px solid var(--ink);
  counter-increment: step;
}

.steps li::before {
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 1.75rem;
  height: 1.75rem;
  margin-bottom: 0.75rem;
  border-radius: 50%;
  background: var(--mark);
  color: var(--mark-ink);
  font-weight: 800;
}

.steps h3 {
  font-size: 1.25rem;
}

.steps p {
  margin-top: 0.5rem;
  color: var(--muted);
}

/* Features: each card is a folder, like the folders in the panel */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 3rem 1.5rem;
  margin: 4rem 0 0;
  padding: 0;
  list-style: none;
}

.card {
  --tint: color-mix(in oklab, var(--base) var(--tint-mix), var(--paper));
  position: relative;
  padding: 1.5rem 1.25rem 1.25rem;
  border-top: 2px solid var(--tint);
  border-radius: 0 0.625rem 0.625rem 0.625rem;
  background: var(--field);
}

.card h3 {
  position: absolute;
  bottom: 100%;
  left: -2px;
  padding: 0.3125rem 0.875rem 0.25rem;
  border-radius: 0.5rem 0.5rem 0 0;
  background: var(--tint);
  font: 700 0.9375rem/1.3 var(--sans);
}

.card p {
  color: var(--muted);
}

.card p + p {
  margin-top: 0.625rem;
}

.card-wide {
  grid-column: 1 / -1;
}

.card-wide p {
  max-width: 44rem;
}

.more {
  margin-top: 2.5rem;
  color: var(--muted);
}

/* Privacy */

.privacy {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 3rem;
  align-items: start;
  padding: 2.5rem;
  border: 2px solid var(--ink);
  border-radius: 0.875rem;
  background: var(--field);
}

.privacy h2 {
  font: 800 clamp(1.75rem, 3.6vw, 2.375rem) / 1.1 var(--serif);
  letter-spacing: -0.02em;
}

.privacy .section-head p {
  margin-top: 1rem;
}

.permissions {
  margin: 0;
  padding: 0;
  list-style: none;
}

.permissions li {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--rule);
}

.permissions li:first-child {
  border-top: 0;
  padding-top: 0;
}

.permissions code {
  align-self: start;
  justify-self: start;
}

.permissions span {
  color: var(--muted);
}

.privacy-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9375rem;
}

@media (max-width: 52rem) {
  .privacy {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 1.5rem;
  }

  .permissions li {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }
}

/* Install */

.install {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

.install ol {
  margin: 0;
  padding-left: 1.25rem;
}

.install li {
  padding-left: 0.375rem;
}

.install li + li {
  margin-top: 0.75rem;
}

.install .actions {
  margin-top: 1.5rem;
}

.install-card {
  padding: 1.5rem;
  border: 2px solid var(--ink);
  border-radius: 0.875rem;
  background: var(--field);
}

.install-card h3 {
  margin-bottom: 1rem;
  font-size: 1.125rem;
}

@media (max-width: 52rem) {
  .install {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* FAQ */

.faq {
  max-width: 46rem;
  margin-top: 2rem;
}

.faq details {
  border-top: 1px solid var(--rule);
}

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

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3rem;
  padding: 0.75rem 0;
  font-weight: 650;
  cursor: pointer;
  list-style: none;
}

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

.faq summary::after {
  content: "+";
  flex: none;
  color: var(--muted);
  font-size: 1.375rem;
  line-height: 1;
}

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

.faq details p {
  padding: 0 2rem 1rem 0;
  color: var(--muted);
}

.faq p + p {
  margin-top: -0.25rem;
}

/* Footer */

footer {
  margin-top: 6rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  justify-content: space-between;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

/* Privacy page and other plain pages */

.doc {
  max-width: 42rem;
  padding: 4rem 0 0;
}

.doc h1 {
  font: 800 clamp(2rem, 5vw, 3rem) / 1.05 var(--serif);
  letter-spacing: -0.02em;
}

.doc h2 {
  margin-top: 2.5rem;
  font: 700 1.375rem/1.2 var(--sans);
}

.doc p,
.doc ul {
  margin-top: 0.875rem;
}

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

.doc li + li {
  margin-top: 0.375rem;
}

.doc .updated {
  color: var(--muted);
}

/* High contrast mode drops background colours, so keep the edges */

@media (forced-colors: active) {
  .button-primary {
    border-color: ButtonText;
  }

  .card,
  .card h3,
  .steps li::before {
    border: 1px solid CanvasText;
  }

  .strip span.now {
    outline: 2px solid Highlight;
  }
}