@font-face {
  font-family: "Tiro Gurmukhi";
  font-display: swap;
  src: url("fonts/tiro-gurmukhi-gurmukhi.woff2") format("woff2");
  unicode-range: U+0951-0952, U+0964-0965, U+0A01-0A76, U+200C-200D, U+20B9, U+25CC, U+262C, U+A830-A839;
}

@font-face {
  font-family: "Tiro Gurmukhi";
  font-display: swap;
  src: url("fonts/tiro-gurmukhi-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "Tiro Devanagari Hindi";
  font-display: swap;
  src: url("fonts/tiro-devanagari-hindi-devanagari.woff2") format("woff2");
  unicode-range: U+0900-097F, U+1CD0-1CF9, U+200C-200D, U+20A8, U+20B9, U+20F0, U+25CC, U+A830-A839, U+A8E0-A8FF;
}

@font-face {
  font-family: "Tiro Devanagari Hindi";
  font-display: swap;
  src: url("fonts/tiro-devanagari-hindi-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #f6eedb;
  --panel: #fbf6ea;
  --ink: #2d1a12;
  --muted: #6e5646;
  --line: #dcc7a0;
  --maroon: #8a1c1c;
  --mustard: #e2a11b;
  --rani: #b5245b;

  --night: #0d0806;
  --night-ink: #f3e6cc;
  --night-muted: #bfa88b;
  --gold: #f2b63c;
  --gold-soft: rgba(242, 182, 60, 0.35);
  --divider: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='30' height='10'%3E%3Cpath d='M1 5h9M20 5h9' stroke='%23e2a11b' stroke-width='1' stroke-linecap='round'/%3E%3Cpath d='M15 1.8l3.2 3.2-3.2 3.2-3.2-3.2z' fill='%23e2a11b' stroke='%23b5245b' stroke-width='.9'/%3E%3C/svg%3E");

  --serif: "Tiro Gurmukhi", Georgia, "Times New Roman", serif;
  --gurmukhi: "Tiro Gurmukhi", "Noto Serif Gurmukhi", Georgia, serif;
  --devanagari: "Tiro Devanagari Hindi", "Noto Serif Devanagari", Georgia, serif;

  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #1c1310;
    --panel: #261a15;
    --ink: #f3e7cf;
    --muted: #c4ae92;
    --line: #4d382b;
    --maroon: #e06a57;
    --mustard: #f0b437;
    --rani: #ea6b98;
  }
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[lang="pa"] {
  font-family: var(--gurmukhi);
}

[lang="hi"] {
  font-family: var(--devanagari);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.band {
  height: 26px;
  background: #8a1c1c url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='26'%3E%3Crect width='26' height='26' fill='%238a1c1c'/%3E%3Cpath d='M13 2l11 11-11 11L2 13z' fill='%23e2a11b'/%3E%3Cpath d='M13 2l11 11-11 11L2 13z' fill='none' stroke='%23b67f0e' stroke-width='.8' stroke-dasharray='2 1.5'/%3E%3Cpath d='M13 7l6 6-6 6-6-6z' fill='%23b5245b'/%3E%3Cpath d='M13 11l2 2-2 2-2-2z' fill='%23fbf1dc'/%3E%3C/svg%3E") repeat-x center / 26px 26px;
}

main,
footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

.title {
  padding: 14px 0 16px;
  text-align: center;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.1;
}

h1 .name {
  display: block;
  color: var(--maroon);
  font-size: clamp(2.2rem, 8vw, 3rem);
}

h1 .tagline {
  display: block;
  white-space: nowrap;
  font-size: clamp(0.95rem, 4.6vw, 1.85rem);
}

.scripts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 14px;
  margin: 8px 0 0;
  font-size: 1.05rem;
  color: var(--muted);
}

@media (min-width: 760px) {
  .scripts [lang] + [lang]::before {
    content: "◆";
    margin-right: 14px;
    font-size: 0.6em;
    vertical-align: middle;
    color: var(--mustard);
  }
}

.stage {
  position: relative;
  padding-bottom: 16px;
  background: var(--night);
  color: var(--night-ink);
  border-radius: 50% 50% 14px 14px / 90px 90px 14px 14px;
  box-shadow: 0 18px 40px -24px rgba(60, 25, 5, 0.6);
  overflow: hidden;
}

.stage::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1.5px solid var(--gold-soft);
  border-radius: inherit;
  pointer-events: none;
}

.stage::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 9px;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  background: var(--gold);
  rotate: 45deg;
  box-shadow: 0 0 14px 3px rgba(242, 182, 60, 0.5);
}

.tree {
  display: block;
  width: 100%;
  aspect-ratio: 1000 / 320;
  max-height: max(180px, calc(100vh - 465px));
}

.say {
  margin: 2px 0 0;
  padding: 0 20px;
  text-align: center;
  font-size: clamp(1.25rem, 4vw, 1.6rem);
  color: var(--gold);
}

.say [lang] {
  white-space: nowrap;
}

.say .dot {
  margin: 0 8px;
  font-size: 0.55em;
  vertical-align: middle;
  color: #e06a57;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px 20px;
  margin-top: 8px;
  padding: 0 20px;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--night-muted);
}

.check input {
  accent-color: var(--gold);
}

.count {
  padding-left: 18px;
  border-left: 1px solid rgba(242, 182, 60, 0.3);
  font-family: var(--serif);
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
  color: var(--gold);
}

.count::before {
  content: "✿ ";
}

button {
  font: inherit;
  cursor: pointer;
}

button.primary {
  padding: 11px 26px;
  background: var(--gold);
  color: #2a1608;
  border: 0;
  border-radius: 999px;
  box-shadow: inset 0 0 0 3px var(--gold), inset 0 0 0 4.5px #8a1c1c;
  font-weight: 700;
}

button.primary:hover:not(:disabled) {
  background: #ffc95c;
}

button:disabled {
  cursor: progress;
  opacity: 0.7;
}

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

.level {
  position: relative;
  width: 110px;
  height: 8px;
  background: rgba(243, 230, 204, 0.12);
  border-radius: 4px;
  overflow: hidden;
}

.level i {
  position: absolute;
  inset: 0;
  background: var(--gold);
  transform-origin: left;
  transform: scaleX(0);
}

.status {
  min-height: 1.6em;
  margin: 8px 20px 0;
  text-align: center;
  color: var(--night-muted);
}

.status.error {
  color: #ff9b85;
}

.graph {
  margin: 10px 20px 0;
}

#trace {
  display: block;
  width: 100%;
  height: 90px;
  background: rgba(243, 230, 204, 0.04);
  border: 1px solid rgba(242, 182, 60, 0.2);
  border-radius: 6px;
}

.graph figcaption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 4px;
  font-size: 0.8rem;
  color: var(--night-muted);
}

.prototype {
  margin: 36px 0;
  padding: 22px 24px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 6px solid var(--mustard);
  border-radius: 6px;
}

.prototype h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.45rem;
  color: var(--maroon);
}

.prototype p {
  margin: 0 0 8px;
}

.prototype p[lang] {
  font-size: 1.05rem;
  color: var(--muted);
}

.prototype p:last-child {
  margin-bottom: 0;
}

.why {
  display: grid;
  gap: 24px 36px;
  margin-bottom: 36px;
}

.why > div {
  container-type: inline-size;
}

@media (min-width: 720px) {
  .why {
    grid-template-columns: 1fr 1fr;
  }
}

.why h2 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 8px;
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.1rem;
}

.why h2::before {
  content: "";
  align-self: center;
  width: 11px;
  height: 11px;
  background: var(--mustard);
  border: 2px solid var(--rani);
  rotate: 45deg;
}

.why h2 [lang] {
  color: var(--maroon);
  font-size: 1.1em;
}

.why h2 span + span::before,
.links h2 span + span::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 10px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--divider) center / contain no-repeat;
}

.why p {
  margin: 0;
}

@container (max-width: 430px) {
  .why h2 > span:last-child {
    flex-basis: 100%;
    padding-left: 23px;
  }

  .why h2 > span:last-child::before {
    display: none;
  }
}

footer {
  padding-bottom: 28px;
  text-align: center;
  color: var(--muted);
}

footer p {
  max-width: 36em;
  margin: 0 auto;
}

.links {
  position: relative;
  margin: 4px 0 40px;
  padding: 36px 24px 28px;
  text-align: center;
  color: var(--night-ink);
  background: radial-gradient(ellipse 60% 80% at 50% 0%, rgba(242, 182, 60, 0.16), transparent 70%), var(--night);
  border-radius: 14px;
  box-shadow: 0 18px 40px -24px rgba(60, 25, 5, 0.6);
  container-type: inline-size;
}

.links::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  width: 12px;
  height: 12px;
  margin-left: -6px;
  background: var(--gold);
  rotate: 45deg;
  box-shadow: 0 0 14px 3px rgba(242, 182, 60, 0.5);
}

.links::after {
  content: "";
  position: absolute;
  inset: 7px;
  border: 1.5px solid var(--gold-soft);
  border-radius: 9px;
  pointer-events: none;
}

.links h2 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 2px 8px;
  margin: 0 0 20px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.4rem;
}

.links h2 [lang] {
  color: var(--gold);
  font-size: 1.1em;
}

@container (max-width: 480px) {
  .links h2 > span:last-child {
    flex-basis: 100%;
  }

  .links h2 > span:last-child::before {
    display: none;
  }
}

.links a {
  text-decoration: none;
  transition: background-color 0.15s, border-color 0.15s;
}

.videos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.videos a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  min-width: 240px;
  padding: 11px 26px 11px 14px;
  background: var(--gold);
  color: #2a1608;
  border-radius: 999px;
  box-shadow: inset 0 0 0 3px var(--gold), inset 0 0 0 4.5px #8a1c1c, 0 0 26px -8px rgba(242, 182, 60, 0.7);
  font-size: 1.1rem;
  font-weight: 700;
}

.videos a:hover {
  background: #ffc95c;
}

.videos svg {
  width: 30px;
  height: 30px;
  flex: none;
}

.videos circle {
  fill: #8a1c1c;
}

.videos path {
  fill: #ffd774;
}

.resources {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 18px auto 0;
}

.resources a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 18px;
  text-align: left;
  color: var(--night-ink);
  background: rgba(243, 230, 204, 0.04);
  border: 1px solid rgba(242, 182, 60, 0.35);
  border-radius: 10px;
}

.resources a:hover {
  background: rgba(242, 182, 60, 0.1);
  border-color: var(--gold);
}

.resources svg {
  width: 28px;
  height: 28px;
  flex: none;
  color: var(--gold);
}

.resources b {
  display: block;
  font-size: 1.05rem;
  color: var(--gold);
}

.resources small {
  display: block;
  font-size: 0.85rem;
  color: var(--night-muted);
}

.sayings p {
  font-size: 1.4rem;
  color: var(--maroon);
}

.sayings p:last-child {
  font-size: 1rem;
  color: var(--muted);
}

.sayings p + p {
  margin-top: 2px;
}

.credit {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: 1.05rem;
  color: var(--ink);
}

@media (max-width: 600px) {
  .tree {
    aspect-ratio: 3 / 2;
  }

  .say {
    font-size: 1.15rem;
  }

  .say .dot {
    display: none;
  }

  .say [lang="hi"] {
    margin-left: 10px;
  }

  #trace {
    height: 72px;
  }

  .links {
    padding: 34px 16px 20px;
  }

  .videos a {
    flex: 1 1 100%;
    min-width: 0;
  }

  .stage {
    border-radius: 50% 50% 12px 12px / 56px 56px 12px 12px;
  }
}