/* Exciting, hybrid: the shell every page shares. Fonts, tokens, browser surfaces, the floating header, footer, the one moving part. */

@font-face {
  font-family: "Literata";
  src: url("/fonts/literata-normal.woff2") format("woff2");
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Literata";
  src: url("/fonts/literata-italic.woff2") format("woff2");
  font-weight: 200 900;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Brandon Grotesque";
  src: url("/fonts/BrandonGrotesque-Regular.woff2") format("woff2"),
    url("/fonts/BrandonGrotesque-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Geist";
  src: url("/fonts/geist-variable.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #fcfdfe;
  --ink: #16181c;
  --ink-2: #545a63;
  --ink-3: #8a9099;
  --rule: #e2e5ea;
  --wash: #f1f3f6;
  --berry: #e2366a;
  --berry-deep: #c8285c;
  --berry-deeper: #ad1f4d;
  --berry-wash: #fdf0f4;
  --berry-ink-2: #5e3a46;

  --serif: "Literata", "Iowan Old Style", Georgia, serif;
  --sans: "Geist", ui-sans-serif, system-ui, sans-serif;
  --logo: "Brandon Grotesque", "Avenir Next", sans-serif;

  --pad: clamp(1.25rem, 0.4rem + 3.6vw, 4.5rem);
  --max: 75rem;
  --rail: clamp(9.5rem, 3.5rem + 9vw, 14rem);
  --gap: clamp(1.5rem, 1rem + 1.4vw, 2.5rem);
  --section: clamp(4rem, 2.4rem + 4.2vw, 6.75rem);
  --fs-body: clamp(1.0625rem, 0.98rem + 0.3vw, 1.1875rem);
  --fs-prose: clamp(1.0625rem, 0.93rem + 0.5vw, 1.25rem);
  --fs-small: 0.9375rem;
  --measure: 33em;

  /* spacing (the floating bar and the home page): 2 4 8 12 16 24 32 40 48 64 80 96 */
  --s-25: 2px; --s-50: 4px; --s-75: 8px; --s-100: 12px; --s-200: 16px; --s-300: 24px;
  --s-400: 32px; --s-500: 40px; --s-600: 48px; --s-700: 64px; --s-800: 80px; --s-900: 96px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  /* how far sticky things sit below the floating bar */
  --bar-clear: var(--s-900);

  --spring: linear(0, 0.006, 0.025 2.8%, 0.101 6.1%, 0.539 18.9%, 0.721 25.3%, 0.849 31.5%, 0.937 38.1%, 0.968 41.8%, 0.991 45.7%, 1.006 50.1%, 1.015 55%, 1.017 63.9%, 1.001 85.9%, 1);

  color-scheme: light;
  accent-color: var(--ink);
  scrollbar-color: #c3c8cf var(--paper);
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--bar-clear);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--fs-body);
  line-height: 1.55;
  font-optical-sizing: auto;
  font-kerning: normal;
  font-variant-numeric: lining-nums proportional-nums;
  text-rendering: optimizeLegibility;
  caret-color: var(--ink);
}

::selection { background: var(--ink); color: var(--paper); }
.jelly-band ::selection, .is-jelly ::selection { background: var(--berry-deep); color: #fff; }

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

h1, h2, h3 { text-wrap: balance; }
/* the frame (header, footer) is set in Geist, like the headings on the calm pages */
.nav-head, .site-foot { font-family: var(--sans); }
p { text-wrap: pretty; }

/* links: quiet at rest, certain on hover */
a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-thickness: max(1px, 0.06em);
  text-underline-offset: 0.22em;
  text-decoration-color: color-mix(in oklab, currentColor 30%, transparent);
  transition: text-decoration-color 0.15s ease-out, color 0.15s ease-out;
}
a:hover { text-decoration-color: currentColor; }
.jelly-band a:not(.btn), .is-jelly .prose a { text-decoration-color: color-mix(in oklab, var(--berry) 60%, transparent); }
.jelly-band a:not(.btn):hover, .is-jelly .prose a:hover { text-decoration-color: var(--berry-deep); }

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

.i {
  width: 0.9em;
  height: 0.9em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -0.1em;
  flex: none;
}
.i-r { margin-left: 0.35em; }
.i-l { margin-right: 0.35em; }

.skip {
  position: absolute;
  left: var(--pad);
  top: 0.75rem;
  z-index: 10;
  padding: 0.5rem 0.9rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 3px;
  transform: translateY(-200%);
}
.skip:focus { transform: none; }

/* ------------------------------------------------------------ frame */
.wrap {
  max-width: calc(var(--max) + 2 * var(--pad));
  margin-inline: auto;
  padding-inline: var(--pad);
}

.cols {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr);
  column-gap: var(--gap);
}
.cols > .rail { grid-column: 1; }
.cols > .main { grid-column: 2; }

.section { margin-top: var(--section); }
.section-h {
  margin: 0;
  font-size: var(--fs-body);
  font-weight: 600;
  line-height: 1.35;
}
.section-h a { text-decoration: none; }
.section-h a:hover { text-decoration: underline; }

/* ------------------------------------------------------------ header: the floating bar */
.nav-head {
  position: sticky;
  top: var(--s-200);
  z-index: 20;
  display: flex;
  justify-content: center;
  padding-inline: var(--s-200);
  margin-top: var(--s-200);
}
.nav-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--s-400);
  padding: var(--s-100) var(--s-300);
  background: color-mix(in oklab, var(--paper) 72%, transparent);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  backdrop-filter: blur(16px) saturate(1.4);
  border: 1px solid color-mix(in oklab, var(--ink) 9%, transparent);
  border-radius: 16px;
  box-shadow: 0 8px 24px -16px rgb(22 24 28 / 0.25);
}
.nav-bar .mark { font-size: 1.75rem; flex: none; }
.nav-links ul { display: flex; gap: var(--s-300); margin: 0; padding: 0; list-style: none; }
.nav-links a {
  font-size: 0.875rem;
  line-height: 1.25rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration-color: transparent;
}
.nav-links a:hover { color: var(--ink); text-decoration-color: currentColor; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--s-75);
  margin: 0;
  padding: var(--s-75) var(--s-100);
  background: transparent;
  border: 0;
  border-radius: 8px;
  color: var(--ink);
  font: 500 0.875rem/1.25rem var(--sans);
  cursor: pointer;
  transition: background-color 300ms var(--ease);
}
.nav-toggle:hover { background: var(--wash); }
.nav-toggle:active { transform: scale(0.98); }
.nav-bars { position: relative; display: block; width: 16px; height: 16px; }
.nav-bars span {
  position: absolute;
  left: 1px;
  right: 1px;
  top: 7px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 500ms var(--ease);
}
.nav-bars span:first-child { transform: translateY(-4px); }
.nav-bars span:last-child { transform: translateY(4px); }
.nav-toggle[aria-expanded="true"] .nav-bars span:first-child { transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-bars span:last-child { transform: rotate(-45deg); }

.nav-menu {
  position: fixed;
  inset: 0;
  z-index: 1;
  padding: var(--s-900) var(--s-400) var(--s-400);
  background: color-mix(in oklab, var(--paper) 94%, transparent);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
  opacity: 0;
  transition: opacity 300ms var(--ease);
}
.nav-menu.is-open { opacity: 1; }
.nav-menu ul { margin: 0; padding: 0; list-style: none; }
.nav-menu li {
  opacity: 0;
  transform: translateY(var(--s-300));
  transition: opacity 500ms var(--ease), transform 500ms var(--ease);
  transition-delay: min(calc(var(--i) * 60ms), 340ms);
}
.nav-menu.is-open li { opacity: 1; transform: none; }
.nav-menu li + li { border-top: 1px solid var(--rule); }
.nav-menu a {
  display: block;
  padding: var(--s-200) 0;
  font-size: 1.875rem;
  line-height: 2.25rem;
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 47.99rem) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav-head { justify-content: stretch; }
  .nav-bar { flex: 1; justify-content: space-between; padding: var(--s-75) var(--s-75) var(--s-75) var(--s-200); }
}
.nav-links a[aria-current] { color: var(--ink); text-decoration-color: currentColor; }
.nav-menu a[aria-current] { text-decoration-line: underline; text-decoration-color: currentColor; }
@media (min-width: 48rem) { .nav-menu { display: none; } }

/* The studio's own logo, as on exciting.io/logos: a black block three times
   as wide as it is tall, tilted -4deg, with the uppercase word set level
   inside it (the text is counter-rotated), and the E-X pair kerned in. */
.mark {
  display: block;
  width: 3em;
  height: 1em;
  font-size: clamp(2.25rem, 1.9rem + 1.1vw, 2.75rem);
  background: var(--ink);
  text-align: center;
  text-decoration: none;
  transform: rotate(-4deg);
  view-transition-name: mark;
}
.mark > span {
  display: block;
  color: #fff;
  font-family: var(--logo);
  font-weight: 400;
  font-synthesis: none;
  font-size: 58%;
  line-height: 1.724em;
  letter-spacing: 0;
  text-transform: uppercase;
  white-space: nowrap;
  transform: rotate(4deg);
}
.mark .kx { margin-right: -0.05em; }
.mark:hover, .mark:focus-visible { transform: rotate(0deg); }
.mark:hover > span, .mark:focus-visible > span { transform: rotate(0deg); }
.mark:focus-visible { outline-offset: 4px; }

/* ------------------------------------------------------------ footer */
.site-foot {
  margin-top: var(--section);
  padding-top: clamp(2rem, 1.4rem + 2vw, 3rem);
  padding-bottom: clamp(2.5rem, 1.6rem + 3vw, 4.5rem);
  background-image: linear-gradient(var(--rule), var(--rule));
  background-size: calc(100% - 2 * var(--pad)) 1px;
  background-position: center top;
  background-repeat: no-repeat;
}
.foot-place { margin: 0.45rem 0 0; color: var(--ink-2); font-size: var(--fs-small); }
.foot-hello {
  margin: 0;
  font-size: clamp(1.375rem, 1.1rem + 1vw, 1.875rem);
  line-height: 1.3;
}
.foot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.5rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-small);
}
.foot-links a { color: var(--ink-2); }
.foot-links a:hover { color: var(--ink); }

/* ------------------------------------------------------------ a browser window, for pages that play an app */
.bw {
  overflow: clip;
  background: #fff;
  border: 1px solid color-mix(in oklab, var(--ink) 12%, transparent);
  border-radius: 16px;
  box-shadow: 0 1px 2px rgb(22 24 28 / 0.05), 0 24px 48px -32px rgb(22 24 28 / 0.35);
}
.bw-bar {
  display: grid;
  grid-template-columns: 1fr minmax(0, 28rem) 1fr;
  align-items: center;
  gap: var(--s-200);
  padding: var(--s-100) var(--s-200);
  background: var(--wash);
  border-bottom: 1px solid var(--rule);
  font: 400 0.875rem/1.25rem var(--sans);
  color: var(--ink-2);
  user-select: none;
}
.bw-dots { display: flex; gap: var(--s-75); }
.bw-dots span { width: 12px; height: 12px; border-radius: 50%; background: #ff5f57; box-shadow: inset 0 0 0 0.5px rgb(0 0 0 / 0.12); }
.bw-dots span:nth-child(2) { background: #febc2e; }
.bw-dots span:nth-child(3) { background: #28c840; }
.bw-url {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-50);
  padding: var(--s-50) var(--s-200);
  background: #fff;
  border: 1px solid var(--rule);
  border-radius: 8px;
  white-space: nowrap;
}
.bw-url svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
/* the page inside is the app's own surface; anything knocked out of it matches */
.bw-view { --paper: #fff; background: var(--paper); }

@media (max-width: 40rem) {
  .bw { border-radius: 12px; }
  .bw-bar { grid-template-columns: auto minmax(0, 1fr); padding-inline: var(--s-100); }
  .bw-dots { gap: var(--s-50); }
  .bw-dots span { width: 10px; height: 10px; }
}

/* ------------------------------------------------------------ narrower (shell) */
@media (max-width: 56rem) {
  .cols { grid-template-columns: minmax(0, 1fr); }
  .cols > .rail, .cols > .main { grid-column: 1; }
  .section-h { margin-bottom: 1.1rem; }
  .foot-place { order: 2; margin-top: 1.5rem; }
  .site-foot .main { order: 1; }
}

/* ------------------------------------------------------------ the one moving part */
@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  .mark, .mark > span { transition: transform 0.9s var(--spring); }
  ::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.22s; }
  ::view-transition-group(mark) { animation-duration: 0.4s; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-menu li { transform: none; transition: opacity 300ms var(--ease); }
  .nav-bars span { transition: none; }
}

@media print {
  .nav-head, .pager, .site-foot .foot-links, .skip { display: none; }
  .cols { display: block; }
}