/* Catail Studio's design system: the parts every page is built from. It sits on the cat palettes
   in style.css (--bg, --ink, --brand, ... per data-cat), so each cat, the dark black one too,
   carries through. The cats and the scenes stay cartoons; the frames round them are calm:
   hairlines and soft shadows instead of the heavy outlines, room to breathe, a clear type scale.
   Everything here is prefixed ui- so it can live beside the current pages until they move over. */

:root {
  /* Type. */
  --ui-display: var(--display);
  --ui-text: var(--body);
  --ui-size-hero: clamp(44px, 7vw, 84px);
  --ui-size-h1: clamp(38px, 5.6vw, 64px);
  --ui-size-h2: clamp(32px, 4.4vw, 52px);
  --ui-size-h3: 22px;
  --ui-size-lead: clamp(18px, 1.6vw, 21px);
  --ui-size-body: 17px;
  --ui-size-small: 14.5px;
  --ui-size-eyebrow: 13px;

  /* Space: 4 px steps up to the section rhythm. */
  --ui-1: 4px;
  --ui-2: 8px;
  --ui-3: 12px;
  --ui-4: 16px;
  --ui-5: 24px;
  --ui-6: 32px;
  --ui-7: 48px;
  --ui-8: 64px;
  --ui-section: clamp(80px, 11vw, 136px);
  --ui-width: 1200px;
  --ui-narrow: 760px;

  /* Shape and depth. */
  --ui-radius-s: 10px;
  --ui-radius-m: 16px;
  --ui-radius-l: 24px;
  --ui-radius-xl: 32px;
  --ui-hair: color-mix(in srgb, var(--ink) 12%, transparent);
  --ui-hair-strong: color-mix(in srgb, var(--ink) 22%, transparent);
  --ui-shade: color-mix(in srgb, var(--ink) 9%, transparent);
  --ui-shadow-1: 0 1px 2px var(--ui-shade), 0 6px 16px -6px var(--ui-shade);
  --ui-shadow-2: 0 2px 4px var(--ui-shade), 0 24px 48px -18px color-mix(in srgb, var(--ink) 28%, transparent);
  --ui-glow: color-mix(in srgb, var(--accent) 55%, transparent);
  --ui-tint: color-mix(in srgb, var(--accent) 22%, var(--surface));

  /* Motion: short and soft; nothing bounces but the cats. */
  --ui-ease: cubic-bezier(0.22, 0.9, 0.3, 1);
  --ui-fast: 140ms;
  --ui-slow: 320ms;
}

/* ---------- Layout ---------- */

.ui-container {
  width: min(var(--ui-width), 100%);
  margin-inline: auto;
  padding-inline: var(--ui-5);
}

.ui-section {
  padding-block: var(--ui-section);
}

.ui-section--tint {
  background: var(--bg-2);
}

.ui-section--tight {
  padding-block: calc(var(--ui-section) * 0.6);
}

/* A section's heading: a small label, a big line, a sentence or two. */
.ui-heading {
  display: grid;
  gap: var(--ui-4);
  max-width: var(--ui-narrow);
  margin-bottom: var(--ui-7);
}

.ui-heading--center {
  justify-items: center;
  margin-inline: auto;
  text-align: center;
}

.ui-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--ui-2);
  width: fit-content;
  padding: 5px 12px;
  border: 1px solid var(--ui-hair);
  border-radius: 999px;
  background: var(--ui-tint);
  color: var(--ink);
  font: 800 var(--ui-size-eyebrow) / 1.2 var(--ui-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ui-title {
  margin: 0;
  font: 800 var(--ui-size-h2) / 1.04 var(--ui-display);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.ui-title--hero {
  font-size: var(--ui-size-hero);
  line-height: 0.98;
}

.ui-title mark {
  padding: 0 0.08em;
  background: linear-gradient(transparent 64%, var(--accent) 64% 88%, transparent 88%);
  color: inherit;
}

.ui-lead {
  margin: 0;
  color: var(--muted);
  font: 600 var(--ui-size-lead) / 1.55 var(--ui-text);
  text-wrap: pretty;
}

/* ---------- Buttons ---------- */

.ui-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid transparent;
  border-radius: 14px;
  font: 800 16px/1.2 var(--ui-text);
  text-decoration: none;
  white-space: nowrap;
  transition:
    transform var(--ui-fast) var(--ui-ease),
    box-shadow var(--ui-fast) var(--ui-ease),
    background-color var(--ui-slow) var(--ui-ease),
    border-color var(--ui-slow) var(--ui-ease);
}

.ui-button:hover {
  transform: translateY(-1px);
}

.ui-button:active {
  transform: translateY(1px);
}

/* The one that matters: download. A little lip underneath, the last trace of the cartoon. */
.ui-button--primary {
  background: var(--brand);
  color: var(--on-brand);
  border-color: color-mix(in srgb, var(--brand) 70%, var(--ink));
  box-shadow:
    0 2px 0 color-mix(in srgb, var(--brand) 55%, var(--ink)),
    0 10px 24px -10px color-mix(in srgb, var(--brand) 80%, transparent);
}

.ui-button--primary:hover {
  box-shadow:
    0 3px 0 color-mix(in srgb, var(--brand) 55%, var(--ink)),
    0 16px 30px -12px color-mix(in srgb, var(--brand) 85%, transparent);
}

.ui-button--secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--ui-hair-strong);
  box-shadow: var(--ui-shadow-1);
}

.ui-button--secondary:hover {
  border-color: color-mix(in srgb, var(--ink) 35%, transparent);
}

.ui-button--quiet {
  min-height: 0;
  padding: 6px 2px;
  border-radius: 6px;
  color: var(--ink);
}

.ui-button--quiet::after {
  content: "→";
  transition: translate var(--ui-fast) var(--ui-ease);
}

.ui-button--quiet:hover::after {
  translate: 3px 0;
}

.ui-button--small {
  min-height: 36px;
  padding: 7px 14px;
  border-radius: 11px;
  font-size: 14.5px;
}

/* The big download: the Windows mark, the words, and what you get underneath. */
.ui-button--large {
  gap: 14px;
  min-height: 64px;
  padding: 12px 26px 12px 20px;
  border-radius: 18px;
  text-align: left;
}

.ui-button__icon {
  flex: none;
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.ui-button > svg:not(.ui-button__icon) {
  flex: none;
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.ui-button__text {
  display: grid;
  gap: 2px;
  font: 800 20px/1.15 var(--ui-display);
}

.ui-button__text small {
  font: 700 13px/1.3 var(--ui-text);
  opacity: 0.8;
}

.ui-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ui-3) var(--ui-4);
}

.ui-actions--center {
  justify-content: center;
}

/* ---------- Hero: the top of a page, centred ---------- */

.ui-hero {
  display: grid;
  justify-items: center;
  gap: 22px;
  padding-top: clamp(56px, 8vw, 96px);
  text-align: center;
}

.ui-hero .ui-lead {
  max-width: 640px;
}

/* ---------- Badges ---------- */

.ui-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-2);
  color: var(--ink);
  font: 800 12.5px/1.4 var(--ui-text);
  white-space: nowrap;
}

.ui-badge--new {
  background: var(--brand);
  color: var(--on-brand);
}

.ui-badge--soon {
  background: transparent;
  color: var(--muted);
  box-shadow: inset 0 0 0 1px var(--ui-hair-strong);
}

.ui-badge--trust {
  background: var(--ui-tint);
}

.ui-badge svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ---------- Cards ---------- */

.ui-card {
  position: relative;
  display: grid;
  align-content: start;
  gap: var(--ui-3);
  padding: var(--ui-6);
  border: 1px solid var(--ui-hair);
  border-radius: var(--ui-radius-l);
  background: var(--surface);
  box-shadow: var(--ui-shadow-1);
  transition:
    transform var(--ui-slow) var(--ui-ease),
    box-shadow var(--ui-slow) var(--ui-ease),
    border-color var(--ui-slow) var(--ui-ease);
}

a.ui-card {
  color: inherit;
  text-decoration: none;
}

.ui-card--hover:hover,
a.ui-card:hover {
  transform: translateY(-3px);
  border-color: var(--ui-hair-strong);
  box-shadow: var(--ui-shadow-2);
}

.ui-card h3 {
  margin: 0;
  font: 800 var(--ui-size-h3) / 1.2 var(--ui-display);
}

.ui-card p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
}

/* A small rounded tile for a card's icon. */
.ui-tile {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  background: var(--ui-tint);
  color: var(--ink);
}

.ui-tile svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* A card that shows something moving above its words (one of the scenes). */
.ui-card--feature {
  padding: 0;
  overflow: hidden;
}

.ui-card--feature .ui-card__show {
  position: relative;
  min-height: 190px;
  border-bottom: 1px solid var(--ui-hair);
  background:
    radial-gradient(120% 90% at 50% 0%, var(--ui-glow), transparent 70%),
    var(--bg-2);
}

.ui-card--feature .ui-card__body {
  display: grid;
  gap: var(--ui-2);
  padding: var(--ui-5) var(--ui-6) var(--ui-6);
}

/* A product in the studio's showcase. */
.ui-card--product {
  gap: var(--ui-4);
}

.ui-card .ui-button--quiet {
  justify-self: start;
}

.ui-card--product .ui-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ui-3);
}

.ui-card--product .ui-card__icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  box-shadow: var(--ui-shadow-1);
}

.ui-card--soon {
  border-style: dashed;
  background: transparent;
  box-shadow: none;
}

.ui-card--soon .ui-card__icon {
  filter: grayscale(1);
  opacity: 0.55;
}

/* ---------- Grids ---------- */

.ui-grid {
  display: grid;
  gap: var(--ui-5);
}

.ui-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.ui-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ui-grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ---------- Pillars: four short promises over one big picture ---------- */

.ui-pillars {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--ui-hair);
  border-radius: var(--ui-radius-xl);
  background: var(--ui-hair);
  box-shadow: var(--ui-shadow-2);
}

.ui-pillar {
  display: grid;
  align-content: start;
  gap: var(--ui-2);
  padding: var(--ui-6);
  background: var(--surface);
}

.ui-pillar strong {
  display: block;
  font: 800 28px/1.1 var(--ui-display);
}

.ui-pillar span {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.5;
}

.ui-pillar .ui-pillar__big {
  margin-bottom: var(--ui-2);
  color: var(--ink);
  font: 800 clamp(36px, 3.8vw, 50px) / 1 var(--ui-display);
  letter-spacing: -0.02em;
}

/* ---------- The demo frame: a window that shows the app ---------- */

.ui-frame {
  position: relative;
  isolation: isolate;
  border: 1px solid var(--ui-hair-strong);
  border-radius: var(--ui-radius-l);
  background: var(--surface);
  box-shadow: var(--ui-shadow-2);
  overflow: hidden;
}

/* A soft glow behind it, in the cat's own color. */
.ui-stage {
  position: relative;
  padding: var(--ui-6);
}

.ui-stage::before {
  content: "";
  position: absolute;
  inset: 8% 6% -4%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, var(--ui-glow), transparent);
  filter: blur(18px);
}

.ui-frame__bar {
  display: flex;
  align-items: center;
  gap: var(--ui-3);
  height: 40px;
  padding-inline: var(--ui-4);
  border-bottom: 1px solid var(--ui-hair);
  background: var(--bg-2);
  font: 800 13px/1 var(--ui-text);
  color: var(--muted);
}

.ui-frame__dots {
  display: flex;
  gap: 6px;
}

.ui-frame__dots i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ui-hair-strong);
}

.ui-frame__body {
  min-height: 280px;
}

/* ---------- Tabs: a row of pills over the panels they switch ---------- */

.ui-tabs__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  width: fit-content;
  margin: 0 auto var(--ui-6);
  padding: 5px;
  border: 1px solid var(--ui-hair);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--ui-shadow-1);
}

.ui-tabs__tab {
  padding: 8px 18px;
  border-radius: 999px;
  color: var(--muted);
  font: 800 15px/1.2 var(--ui-text);
  transition: background-color var(--ui-fast) var(--ui-ease), color var(--ui-fast) var(--ui-ease);
}

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

.ui-tabs__tab[aria-selected="true"] {
  background: var(--ink);
  color: var(--bg);
}

.ui-tabs__panel[hidden] {
  display: none;
}

/* Tabs that move on by themselves: a thin bar under the row, in the page's color, fills up and
   the next tab opens (ui.js). */
.ui-tabs__list:has(+ .ui-tabs__timer) {
  margin-bottom: var(--ui-3);
}

.ui-tabs__timer {
  width: min(220px, 50%);
  height: 4px;
  margin: 0 auto var(--ui-6);
  overflow: hidden;
  border-radius: 4px;
  background: var(--ui-hair);
}

.ui-tabs__timer i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: left;
  /* ui.js moves it a step every tenth of a second; this glides between the steps. */
  transition: transform 100ms linear;
}

.ui-tabs__panel {
  animation: ui-fade-up var(--ui-slow) var(--ui-ease);
}

@keyframes ui-fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

/* ---------- "And much more": a paragraph of everything else ---------- */

.ui-more {
  max-width: 900px;
  margin-inline: auto;
  font: 700 clamp(22px, 2.6vw, 32px) / 1.45 var(--ui-display);
  text-align: center;
  color: var(--muted);
}

.ui-more b {
  color: var(--ink);
}

/* ---------- Numbers that back it up ---------- */

.ui-stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--ui-5) var(--ui-8);
}

.ui-stat {
  display: grid;
  justify-items: center;
  gap: 2px;
}

.ui-stat strong {
  font: 800 clamp(36px, 4vw, 52px) / 1 var(--ui-display);
}

.ui-stat[hidden] {
  display: none;
}

.ui-stats--live {
  margin-top: var(--ui-7);
}

.ui-stats__note {
  margin: var(--ui-4) 0 0;
  color: var(--muted);
  font: 600 13px/1.4 var(--ui-text);
  text-align: center;
}

/* The note speaks of the live counts, so it waits until one of them shows. */
.ui-stats:not(:has(.ui-stat:not([hidden]))),
.ui-stats:not(:has(.ui-stat:not([hidden]))) + .ui-stats__note {
  display: none;
}

.ui-heading + .ui-stats--live {
  margin-top: 0;
}

.ui-stats__note + .ui-grid {
  margin-top: var(--ui-7);
}

.ui-stat span {
  color: var(--muted);
  font: 700 14.5px/1.3 var(--ui-text);
}

/* ---------- The last call to download ---------- */

.ui-cta {
  position: relative;
  display: grid;
  justify-items: center;
  gap: var(--ui-5);
  padding: clamp(56px, 8vw, 96px) var(--ui-5);
  overflow: hidden;
  border-radius: var(--ui-radius-xl);
  background:
    radial-gradient(80% 120% at 50% 110%, var(--ui-glow), transparent 70%),
    var(--bg-2);
  text-align: center;
}

/* ---------- Top bar ---------- */

.ui-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--ui-hair);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
}

.ui-nav__inner {
  display: flex;
  align-items: center;
  gap: var(--ui-5);
  height: 64px;
}

.ui-nav__brand .logo {
  width: auto;
  height: 26px;
}

.ui-nav__links {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-right: auto;
}

.ui-nav__links > a,
.ui-nav__menu > summary {
  padding: 7px 12px;
  border-radius: 10px;
  color: var(--muted);
  font: 700 15px/1.2 var(--ui-text);
  text-decoration: none;
  transition: color var(--ui-fast) var(--ui-ease), background-color var(--ui-fast) var(--ui-ease);
}

.ui-nav__links > a:hover,
.ui-nav__menu > summary:hover,
.ui-nav__menu[open] > summary {
  background: var(--bg-2);
  color: var(--ink);
}

.ui-nav__menu {
  position: relative;
}

.ui-nav__menu > summary {
  list-style: none;
}

.ui-nav__menu > summary::-webkit-details-marker {
  display: none;
}

.ui-nav__menu > summary::after {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-left: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-3px) rotate(45deg);
}

/* The products menu: a card of products under the bar. */
.ui-nav__panel {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  display: grid;
  gap: 4px;
  width: 340px;
  padding: var(--ui-2);
  border: 1px solid var(--ui-hair);
  border-radius: var(--ui-radius-m);
  background: var(--surface);
  box-shadow: var(--ui-shadow-2);
  animation: ui-fade-up var(--ui-fast) var(--ui-ease);
}

.ui-nav__item {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: center;
  gap: var(--ui-3);
  padding: var(--ui-2) var(--ui-3);
  border-radius: 12px;
  color: var(--ink);
  text-decoration: none;
}

.ui-nav__item:hover {
  background: var(--bg-2);
}

.ui-nav__item img {
  width: 40px;
  height: 40px;
  border-radius: 11px;
}

.ui-nav__item strong {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 800 15px/1.2 var(--ui-text);
}

.ui-nav__item span {
  display: block;
  color: var(--muted);
  font: 600 13.5px/1.35 var(--ui-text);
}

.ui-nav__end {
  display: flex;
  align-items: center;
  gap: var(--ui-2);
}

.ui-nav__lang {
  padding: 6px 10px;
  border-radius: 10px;
  color: var(--muted);
  font: 800 13.5px/1.2 var(--ui-text);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.ui-nav__lang:hover {
  background: var(--bg-2);
  color: var(--ink);
}

.ui-icon-link {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: var(--muted);
}

.ui-icon-link:hover {
  background: var(--bg-2);
  color: var(--ink);
}

.ui-icon-link svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* ---------- Footer: columns of links, the studio underneath ---------- */

.ui-footer {
  margin-top: var(--ui-section);
  padding-block: var(--ui-8) var(--ui-6);
  border-top: 1px solid var(--ui-hair);
  background: var(--bg-2);
}

.ui-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr));
  gap: var(--ui-6);
}

.ui-footer__brand {
  display: grid;
  align-content: start;
  gap: var(--ui-3);
  color: var(--muted);
  font-size: 15px;
}

.ui-footer__brand .logo {
  height: 28px;
}

.ui-footer h4 {
  margin: 0 0 var(--ui-3);
  color: var(--ink);
  font: 800 13px/1.2 var(--ui-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ui-footer ul {
  display: grid;
  gap: var(--ui-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ui-footer li a {
  color: var(--muted);
  font: 600 15px/1.4 var(--ui-text);
  text-decoration: none;
}

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

.ui-footer__base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--ui-3);
  margin-top: var(--ui-7);
  padding-top: var(--ui-5);
  border-top: 1px solid var(--ui-hair);
  color: var(--muted);
  font: 600 14px/1.4 var(--ui-text);
}

/* ---------- Where you are: Catail Studio / Catail ---------- */

.ui-crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font: 700 14px/1.2 var(--ui-text);
}

.ui-crumbs a {
  color: inherit;
  text-decoration: none;
}

.ui-crumbs a:hover {
  color: var(--ink);
}

.ui-crumbs a::after {
  content: "/";
  margin-left: 8px;
  opacity: 0.5;
}

.ui-crumbs [aria-current] {
  color: var(--ink);
}

/* ---------- Split: words on one side, a picture of it on the other ---------- */

.ui-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  align-items: center;
  gap: var(--ui-7);
}

.ui-split--flip > :first-child {
  order: 2;
}

.ui-split__text {
  display: grid;
  justify-items: start;
  gap: var(--ui-4);
}

/* ---------- A list of plain facts, each with a paw ---------- */

.ui-checks {
  display: grid;
  gap: var(--ui-2);
  margin: 0;
  padding: 0;
  list-style: none;
  font: 700 16px/1.45 var(--ui-text);
}

.ui-checks li {
  position: relative;
  padding-left: 28px;
}

.ui-checks li::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 0;
  width: 18px;
  height: 18px;
  background: var(--accent);
  -webkit-mask: url("assets/paw.svg") center / contain no-repeat;
  mask: url("assets/paw.svg") center / contain no-repeat;
}

.ui-checks--row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--ui-2) var(--ui-5);
  font-size: 15px;
}

/* ---------- A page of plain text: privacy and the like ---------- */

.ui-doc {
  display: grid;
  gap: var(--ui-7);
  max-width: var(--ui-narrow);
  padding-block: clamp(48px, 7vw, 88px) 0;
}

.ui-doc__head {
  display: grid;
  justify-items: start;
  gap: var(--ui-4);
}

.ui-doc__date {
  margin: 0;
  color: var(--muted);
  font: 700 13.5px/1.4 var(--ui-text);
}

.ui-doc h2 {
  margin: 0 0 var(--ui-4);
  font-size: clamp(26px, 3vw, 34px);
}

.ui-doc h3 {
  margin: var(--ui-5) 0 var(--ui-2);
  font-size: 19px;
}

.ui-doc__part p,
.ui-doc__part li {
  color: var(--ink);
  font: 500 16.5px/1.65 var(--ui-text);
}

.ui-doc__part p {
  margin: 0 0 var(--ui-3);
}

.ui-doc__part ul {
  display: grid;
  gap: var(--ui-2);
  margin: 0 0 var(--ui-3);
  padding-left: 1.2em;
}

.ui-doc a {
  color: var(--ink);
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.ui-doc code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--bg-2);
  font-size: 0.9em;
  overflow-wrap: anywhere;
}

.ui-doc__summary h2 {
  margin: 0;
  font-size: 22px;
}

/* ---------- The slogan: "Ve bir kedisi var." ---------- */

/* The slogan, right under the title: a little tilted, like a note stuck on, with a paw either side. */
.ui-slogan {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: -6px 0 2px;
  padding: 8px 20px;
  border: 1px solid var(--ui-hair);
  border-radius: 999px;
  background: var(--surface);
  box-shadow: inset 0 1px 0 var(--ui-edge), var(--ui-shadow-1);
  color: var(--ink);
  font: 800 clamp(20px, 2.2vw, 26px) / 1.2 var(--ui-display);
  rotate: -2deg;
}

.ui-slogan__paw {
  width: 22px;
  height: 22px;
  background: var(--brand);
  -webkit-mask: url("assets/paw.svg") center / contain no-repeat;
  mask: url("assets/paw.svg") center / contain no-repeat;
}

.ui-slogan__paw:first-child {
  rotate: -18deg;
}

.ui-slogan__paw:last-child {
  rotate: 18deg;
}

/* ---------- The phone menu ---------- */

.ui-nav__mobile {
  display: none;
}

.ui-nav__mobile > summary {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--ink);
  list-style: none;
  cursor: pointer;
}

.ui-nav__mobile > summary::-webkit-details-marker {
  display: none;
}

.ui-nav__mobile > summary:hover {
  background: var(--bg-2);
}

/* Three lines that fold into a cross. */
.ui-nav__mobile > summary span,
.ui-nav__mobile > summary span::before,
.ui-nav__mobile > summary span::after {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform var(--ui-fast) var(--ui-ease), background-color var(--ui-fast) var(--ui-ease);
}

.ui-nav__mobile > summary span {
  position: relative;
}

.ui-nav__mobile > summary span::before,
.ui-nav__mobile > summary span::after {
  content: "";
  position: absolute;
  left: 0;
}

.ui-nav__mobile > summary span::before {
  transform: translateY(-6px);
}

.ui-nav__mobile > summary span::after {
  transform: translateY(6px);
}

.ui-nav__mobile[open] > summary span {
  background: transparent;
}

.ui-nav__mobile[open] > summary span::before {
  transform: rotate(45deg);
}

.ui-nav__mobile[open] > summary span::after {
  transform: rotate(-45deg);
}

/* Hangs under the whole bar (the bar is the nearest positioned box). */
.ui-nav__sheet {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  display: grid;
  gap: 2px;
  padding: var(--ui-2) var(--ui-4) var(--ui-5);
  border-bottom: 1px solid var(--ui-hair);
  background: var(--bg);
  box-shadow: var(--ui-shadow-2);
  animation: ui-fade-up var(--ui-fast) var(--ui-ease);
}

.ui-nav__sheet a {
  padding: 12px;
  border-radius: 12px;
  color: var(--ink);
  font: 800 17px/1.2 var(--ui-text);
  text-decoration: none;
}

.ui-nav__sheet a:hover,
.ui-nav__sheet a[aria-current="page"] {
  background: var(--bg-2);
}

.ui-nav__links > a[aria-current="page"] {
  color: var(--ink);
}

.ui-nav__item--soon img {
  filter: grayscale(1);
  opacity: 0.55;
}

/* ---------- The footer's cat, peeking out of its box on the edge ---------- */

.ui-footer {
  position: relative;
}

.ui-footer__cat {
  position: absolute;
  right: max(24px, calc(50% - 570px));
  bottom: 100%;
  width: 120px;
  margin-bottom: -6px;
}

.ui-footer__base a {
  color: inherit;
}

.ui-footer__base a:hover {
  color: var(--ink);
}

/* ---------- Pages built on this system ---------- */

/* The cartoon parts (style.css, scenes.css) draw thick ink outlines with a hard shadow. Here the
   frames calm down to hairlines and soft shadows; the cats and the scenes inside stay cartoons. */
.ui-page {
  --stroke: 1px solid var(--ui-hair-strong);
  --lift: var(--ui-shadow-2);
}

/* ---------- Narrow screens ---------- */

@media (max-width: 1000px) {
  .ui-grid--4,
  .ui-pillars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ui-footer__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .ui-footer__brand {
    grid-column: 1 / -1;
  }

  .ui-nav__links {
    display: none;
  }

  .ui-nav__end {
    margin-left: auto;
  }

  .ui-nav__mobile {
    display: block;
  }

  .ui-split {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--ui-6);
  }

  .ui-split--flip > :first-child {
    order: 0;
  }
}

@media (max-width: 720px) {
  .ui-container {
    padding-inline: var(--ui-4);
  }

  .ui-nav__inner {
    gap: var(--ui-3);
  }

  .ui-nav__brand .logo {
    height: 22px;
  }

  .ui-nav__end {
    gap: 4px;
  }

  .ui-nav__end > .ui-icon-link {
    display: none;
  }

  .ui-footer__cat {
    width: 96px;
  }

  .ui-grid--2,
  .ui-grid--3,
  .ui-grid--4,
  .ui-pillars {
    grid-template-columns: minmax(0, 1fr);
  }

  .ui-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ui-card {
    padding: var(--ui-5);
  }

  .ui-tabs__list {
    border-radius: var(--ui-radius-m);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ui-button,
  .ui-card,
  .ui-tabs__panel,
  .ui-nav__panel {
    transition: none;
    animation: none;
  }
}

/* ---------- The "not found" page ---------- */

.ui-lost {
  min-height: 100vh;
  align-content: center;
  padding-block: var(--ui-7);
}

.ui-lost .ui-nav__brand {
  margin-bottom: var(--ui-5);
}

/* The dizzy cat: it sways on its feet while four stars go round above its head, passing in
   front of it, then behind, smaller and dimmer. */
.ui-dizzy {
  position: relative;
  display: block;
  width: 170px;
  margin: 10px 0 4px;
}

.ui-dizzy__cat {
  position: relative;
  z-index: 2;
  transform-origin: 50% 100%;
  animation: ui-dizzy-sway 2.4s ease-in-out infinite;
}

/* Centred on the cat's head, which sits left of the middle of the picture. */
.ui-dizzy__stars {
  position: absolute;
  top: -4%;
  left: 38%;
  width: 150px;
  height: 46px;
  translate: -50% 0;
  z-index: 3;
  animation: ui-dizzy-sway 2.4s ease-in-out infinite;
  transform-origin: 50% 400%;
}

.ui-dizzy__stars i {
  position: absolute;
  top: 0;
  left: 0;
  width: 26px;
  height: 26px;
  margin: -13px 0 0 -13px;
  offset-path: path("M 75 38 A 70 15 0 1 1 75 8 A 70 15 0 1 1 75 38");
  offset-rotate: 0deg;
  animation: ui-dizzy-orbit 1.6s linear infinite;
  animation-delay: calc(var(--n) * -0.4s);
}

.ui-dizzy__stars svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: #ffd34d;
  stroke: #c98a00;
  stroke-width: 1.2;
  stroke-linejoin: round;
  animation: ui-dizzy-twinkle 0.8s ease-in-out infinite alternate;
}

/* Front of the ring at the start and the end; at the back, half way, smaller and dimmer. */
@keyframes ui-dizzy-orbit {
  from {
    offset-distance: 0%;
  }
  50% {
    scale: 0.55;
    opacity: 0.45;
  }
  to {
    offset-distance: 100%;
  }
}

@keyframes ui-dizzy-sway {
  0%,
  100% {
    rotate: -5deg;
  }
  50% {
    rotate: 5deg;
  }
}

@keyframes ui-dizzy-twinkle {
  to {
    rotate: 25deg;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ui-dizzy__cat,
  .ui-dizzy__stars,
  .ui-dizzy__stars i,
  .ui-dizzy__stars svg {
    animation-play-state: paused;
  }
}

/* ==========================================================================
   Depth. The pages sat flat on the paper; these give them layers: a soft
   light from above, cards that catch it on their top edge, bands that fade in
   and out, and a framed top with a cat's ears and whiskers.
   ========================================================================== */

:root {
  /* The thin bright line along a card's top edge, where the light catches it. */
  --ui-edge: color-mix(in srgb, #fff 70%, transparent);
  --ui-shadow-1: 0 1px 2px var(--ui-shade), 0 8px 20px -10px color-mix(in srgb, var(--ink) 20%, transparent);
  --ui-shadow-2:
    0 2px 6px var(--ui-shade),
    0 18px 40px -18px color-mix(in srgb, var(--ink) 26%, transparent),
    0 40px 90px -50px color-mix(in srgb, var(--accent) 70%, transparent);
}

[data-cat="black"] {
  --ui-edge: color-mix(in srgb, #fff 9%, transparent);
}

/* A soft light from the top of the page instead of the paw wallpaper everywhere. */
body.ui-page {
  background:
    radial-gradient(1100px 520px at 50% -140px, color-mix(in srgb, var(--accent) 34%, transparent), transparent 72%),
    var(--bg);
}

.ui-page main::before {
  display: none;
}

.ui-card {
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface) 90%, var(--bg-2)));
  box-shadow: inset 0 1px 0 var(--ui-edge), var(--ui-shadow-1);
}

.ui-card--soon {
  background: color-mix(in srgb, var(--surface) 45%, transparent);
  box-shadow: inset 0 1px 0 var(--ui-edge);
}

.ui-pillars,
.ui-frame {
  box-shadow: inset 0 1px 0 var(--ui-edge), var(--ui-shadow-2);
}

/* Tinted bands fade in and out rather than starting with a hard edge. */
.ui-section--tint {
  background: linear-gradient(
    180deg,
    transparent,
    var(--bg-2) clamp(60px, 8vw, 120px),
    var(--bg-2) calc(100% - clamp(60px, 8vw, 120px)),
    transparent
  );
}

/* ---------- Paw prints: a few, fading out toward the middle ---------- */

.ui-paws {
  position: relative;
  isolation: isolate;
}

.ui-paws::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: color-mix(in srgb, var(--accent) 60%, transparent);
  opacity: 0.55;
  pointer-events: none;
  -webkit-mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 70% 65% at 50% 45%, transparent 30%, #000 80%);
  -webkit-mask-composite: source-in;
  mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 70% 65% at 50% 45%, transparent 30%, #000 80%);
  mask-composite: intersect;
}

/* ---------- The showcase: a framed, layered top ---------- */

.ui-showcase {
  position: relative;
  isolation: isolate;
  margin-top: clamp(40px, 6vw, 64px);
  padding: clamp(56px, 8vw, 100px) clamp(20px, 5vw, 72px) clamp(36px, 5vw, 56px);
  border: 1px solid var(--ui-hair);
  border-radius: 44px;
  background:
    radial-gradient(55% 70% at 12% 105%, color-mix(in srgb, var(--accent) 38%, transparent), transparent 70%),
    radial-gradient(55% 70% at 88% 105%, color-mix(in srgb, var(--brand) 26%, transparent), transparent 70%),
    var(--bg-2);
  box-shadow:
    inset 0 1px 0 var(--ui-edge),
    0 2px 6px var(--ui-shade),
    0 50px 100px -60px color-mix(in srgb, var(--ink) 45%, transparent);
}

/* Paw prints inside the frame, kept off the words in the middle. */
.ui-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background: color-mix(in srgb, var(--accent) 70%, transparent);
  opacity: 0.45;
  pointer-events: none;
  -webkit-mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 58% 62% at 50% 45%, transparent 62%, #000 100%);
  -webkit-mask-composite: source-in;
  mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 58% 62% at 50% 45%, transparent 62%, #000 100%);
  mask-composite: intersect;
}

/* ---------- The big title; and whiskers, either side of whatever they're put round ---------- */

.ui-title--display {
  font-size: clamp(44px, 7.2vw, 100px);
  line-height: 0.98;
  letter-spacing: -0.025em;
  /* The lines are set by hand (a <br />), so no balancing that could split them further. */
  text-wrap: wrap;
}

/* Like a cat's cheeks: a whisker on either side of what's inside. */
.ui-cheeks {
  position: relative;
  white-space: nowrap;
}

.ui-whiskers {
  position: absolute;
  top: 52%;
  width: 0.95em;
  height: auto;
  fill: none;
  stroke: color-mix(in srgb, var(--ink) 38%, transparent);
  stroke-width: 2.6;
  stroke-linecap: round;
  translate: 0 -50%;
  vector-effect: non-scaling-stroke;
}

.ui-whiskers path {
  vector-effect: non-scaling-stroke;
}

.ui-whiskers--left {
  right: calc(100% + 0.18em);
}

.ui-whiskers--right {
  left: calc(100% + 0.18em);
  scale: -1 1;
}

/* The last call gets the same layered light and paw prints. */
.ui-cta {
  border: 1px solid var(--ui-hair);
  box-shadow: inset 0 1px 0 var(--ui-edge), var(--ui-shadow-2);
  isolation: isolate;
}

.ui-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: color-mix(in srgb, var(--accent) 70%, transparent);
  opacity: 0.45;
  pointer-events: none;
  -webkit-mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 60% 70% at 50% 50%, transparent 40%, #000 90%);
  -webkit-mask-composite: source-in;
  mask:
    url("assets/paw-tile.svg") 0 0 / 150px 150px,
    radial-gradient(ellipse 60% 70% at 50% 50%, transparent 40%, #000 90%);
  mask-composite: intersect;
}

@media (max-width: 560px) {
  /* No room beside the title any more: the whiskers go. */
  .ui-whiskers {
    display: none;
  }

  .ui-cheeks {
    white-space: normal;
  }
}

@media (max-width: 720px) {
  .ui-showcase {
    border-radius: 30px;
  }
}

/* ---------- The theme menu in the top bar: five cats, the site wears the one you pick ---------- */

.ui-themes > summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.ui-themes__paw {
  width: 15px;
  height: 15px;
  background: var(--brand);
  -webkit-mask: url("assets/paw.svg") center / contain no-repeat;
  mask: url("assets/paw.svg") center / contain no-repeat;
}

.ui-themes__panel {
  right: 0;
  left: auto;
  grid-template-columns: repeat(5, 70px);
  width: auto;
}

/* Each button wears its own cat's colors (data-cat), so it shows what you'd get. */
.ui-themes__cat {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 10px 4px 7px;
  border: 1px solid transparent;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  font: 700 12.5px/1.2 var(--ui-text);
}

.ui-themes__cat .cat {
  width: 46px;
  transform-origin: 50% 100%;
  transition: transform 200ms var(--pop);
}

.ui-themes__cat:hover .cat {
  transform: translateY(-3px) rotate(-3deg);
}

.ui-themes__cat:hover,
.ui-themes__cat[aria-pressed="true"] {
  border-color: var(--ui-hair);
  background: var(--bg-2);
  color: var(--ink);
}

/* ---------- Back to the top: a cat with an arrow on its tummy ---------- */

.ui-to-top {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 40;
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border: 1px solid var(--ui-hair);
  border-radius: 50%;
  background: var(--surface);
  box-shadow: inset 0 1px 0 var(--ui-edge), var(--ui-shadow-2);
  transition:
    opacity var(--ui-slow) var(--ui-ease),
    translate var(--ui-slow) var(--ui-ease),
    visibility var(--ui-slow);
}

/* Out of sight near the top of the page; it slides up into view as you scroll down. */
.ui-to-top[hidden] {
  display: grid;
  visibility: hidden;
  opacity: 0;
  translate: 0 16px;
  pointer-events: none;
}

.ui-to-top__cat {
  position: relative;
  width: 50px;
  transition: translate 200ms var(--pop);
}

.ui-to-top:hover .ui-to-top__cat {
  translate: 0 -4px;
}

/* On the white of the tummy. */
.ui-to-top__arrow {
  position: absolute;
  top: 66%;
  left: 41%;
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--ink);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  translate: -50% -50%;
}

[data-cat="black"] .ui-to-top__arrow {
  stroke: #1b1a1e;
}

@media (max-width: 720px) {
  .ui-themes__panel {
    grid-template-columns: repeat(5, 58px);
  }

  .ui-themes__cat .cat {
    width: 38px;
  }

  .ui-to-top {
    width: 58px;
    height: 58px;
  }

  .ui-to-top__cat {
    width: 42px;
  }
}