/* asd.ad: the touch-typing chart. Every key is tinted by the finger that presses it; light mode is
   a desk by day, dark mode a backlit keyboard at night. */

@font-face {
  font-family: "Rubik";
  src: url("fonts/rubik-variable-latin.woff2") format("woff2");
  font-weight: 600 800;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-medium-latin.woff2") format("woff2");
  font-weight: 500;
  font-display: swap;
}

:root {
  --bg: #f7f5f0;
  --ink: #1e1c27;
  --soft: #575464;
  --card: #ffffff;
  --line: #e7e2d8;
  --sunk: #f2efe8;
  --track: #e9e4d9;
  --seg: #ebe7de;
  --plate: #ece7dd;
  --plate-hi: #f8f5ef;
  --plate-lo: #d9d2c4;
  --cap: #ffffff;
  --cap-skirt: #d6cfc2;
  --mod-ink: #5f5b6c;
  --shade: 44 32 18;
  --pinky: #ffb3c1;
  --ring: #ffd666;
  --middle: #8ee0a8;
  --index: #8cc4ff;
  --action: #3f37c9;
  --on-action: #ffffff;
  --ok: #8ee0a8;
  --ok-ink: #1e1c27;
  --bad: #d7263d;
  --tint: 44%;
  --hi: 0.5;
  --shine: 0.55;
  --skirt-z: 66%;
  --skirt-mix: #8d8676;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121118;
    --ink: #eeecf4;
    --soft: #aaa6b8;
    --card: #1a1922;
    --line: #2b2a36;
    --sunk: #14131a;
    --track: #282733;
    --seg: #1f1e28;
    --plate: #0b0a0f;
    --plate-hi: #1d1c25;
    --plate-lo: #050408;
    --cap: #23222b;
    --cap-skirt: #111016;
    --mod-ink: #9995a8;
    --shade: 0 0 0;
    --action: #a9a3ff;
    --on-action: #121118;
    --ok-ink: #121118;
    --bad: #ff6b81;
    --tint: 7%;
  --hi: 0.06;
  --shine: 0.07;
  --skirt-z: 42%;
    --skirt-mix: #0a090d;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #121118;
  --ink: #eeecf4;
  --soft: #aaa6b8;
  --card: #1a1922;
  --line: #2b2a36;
  --sunk: #14131a;
  --track: #282733;
  --seg: #1f1e28;
  --plate: #0b0a0f;
  --plate-hi: #1d1c25;
  --plate-lo: #050408;
  --cap: #23222b;
  --cap-skirt: #111016;
  --mod-ink: #9995a8;
  --shade: 0 0 0;
  --action: #a9a3ff;
  --on-action: #121118;
  --ok-ink: #121118;
  --bad: #ff6b81;
  --tint: 7%;
  --hi: 0.06;
  --shine: 0.07;
  --skirt-z: 42%;
  --skirt-mix: #0a090d;
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1rem/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-x: hidden;
}

.wrap {
  width: min(100% - 32px, 1180px);
  margin-inline: auto;
}

.vh {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

a {
  color: var(--action);
}

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

/* ---------- top bar ---------- */

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 18px;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font: 800 1.35rem/1 "Rubik", system-ui, sans-serif;
  letter-spacing: -0.01em;
  border-radius: 8px;
}

.mark {
  display: inline-flex;
  gap: 3px;
}

.mark i {
  display: block;
  width: 11px;
  height: 13px;
  border-radius: 3.5px;
  background: var(--z);
  box-shadow: inset 0 -2.5px 0 color-mix(in srgb, var(--z) 62%, #6d6556);
}

.theme {
  display: inline-flex;
  margin: 0;
  padding: 3px;
  border: 0;
  border-radius: 999px;
  background: var(--seg);
  box-shadow: inset 0 1px 2px rgb(var(--shade) / 0.08);
}

.theme label {
  position: relative;
  cursor: pointer;
}

.theme span {
  display: block;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--soft);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.2;
}

.theme input:checked + span {
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 1px 2px rgb(var(--shade) / 0.14), 0 0 0 1px var(--line);
}

.theme input:focus-visible + span {
  outline: 3px solid var(--action);
  outline-offset: 1px;
}

/* ---------- finger zones ---------- */

.z-lp,
.z-rp {
  --z: var(--pinky);
}
.z-lr,
.z-rr {
  --z: var(--ring);
}
.z-lm,
.z-rm {
  --z: var(--middle);
}
.z-li,
.z-ri {
  --z: var(--index);
}

/* ---------- keyboards ---------- */

.kb {
  --p: 58px;
  --gap: calc(var(--p) * 0.1);
  --u: calc(var(--p) - var(--gap));
  --depth: calc(var(--p) * 0.09);
  --r: calc(var(--p) * 0.17);
  display: flex;
  flex-direction: column;
  gap: var(--gap);
  width: max-content;
  padding: calc(var(--p) * 0.3);
  border-radius: calc(var(--p) * 0.42);
  background: linear-gradient(180deg, var(--plate-hi), var(--plate) 22%, var(--plate));
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / var(--shine)),
    inset 0 -2px 0 var(--plate-lo),
    0 calc(var(--p) * 0.45) calc(var(--p) * 0.9) calc(var(--p) * -0.35) rgb(var(--shade) / 0.32),
    0 2px 5px rgb(var(--shade) / 0.08);
}

.kb-row {
  display: flex;
  gap: var(--gap);
}

.key {
  --w: 1;
  --capc: color-mix(in srgb, var(--z) var(--tint), var(--cap));
  --skirt: color-mix(in srgb, var(--z) var(--skirt-z), var(--skirt-mix));
  --legend: var(--ink);
  position: relative;
  flex: none;
  width: calc(var(--w) * var(--p) - var(--gap));
  height: var(--u);
  border-radius: var(--r);
  background: var(--skirt);
  box-shadow: 0 calc(var(--depth) * 0.6) calc(var(--depth) * 1.4) rgb(var(--shade) / 0.22);
}

.key::before,
.key .lg {
  position: absolute;
  inset: 0 0 var(--depth) 0;
  border-radius: var(--r);
}

.key::before {
  content: "";
  background-color: var(--capc);
  background-image: linear-gradient(180deg, rgb(255 255 255 / var(--hi)), rgb(255 255 255 / 0) 45%, rgb(0 0 0 / 0.035));
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.9),
    inset 0 0 0 1px rgb(var(--shade) / 0.05);
}

.key .lg {
  display: grid;
  place-items: center;
  color: var(--legend);
  font: 500 max(13px, calc(var(--p) * 0.3)) / 1 "JetBrains Mono", ui-monospace, monospace;
}

.w125 { --w: 1.25; }
.w15 { --w: 1.5; }
.w175 { --w: 1.75; }
.w2 { --w: 2; }
.w225 { --w: 2.25; }
.w275 { --w: 2.75; }
.w65 { --w: 6.5; }

.key.mod,
.key.thumb {
  --z: #c9c1ff;
  --capc: var(--cap);
  --skirt: var(--cap-skirt);
  --legend: var(--mod-ink);
}

.key.mod .lg {
  place-items: end start;
  padding: 0 0 calc(var(--p) * 0.13) calc(var(--p) * 0.17);
  font-size: max(9px, calc(var(--p) * 0.18));
  letter-spacing: 0.02em;
}

.key.bump .lg::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 17%;
  width: 24%;
  height: max(2px, calc(var(--p) * 0.04));
  border-radius: 2px;
  background: currentColor;
  opacity: 0.55;
  transform: translateX(-50%);
}

/* Pressed: the cap travels down over its skirt; lit: it fills with its finger's colour. */
.key.is-down::before,
.key.is-down .lg {
  transform: translateY(calc(var(--depth) - 1px));
}
.key.is-down {
  box-shadow: 0 1px 2px rgb(var(--shade) / 0.2);
}
.key.is-lit {
  --capc: var(--z);
}
.key.is-lit::before {
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.7),
    0 0 0 3px color-mix(in srgb, var(--z) 45%, transparent),
    0 0 calc(var(--p) * 0.5) calc(var(--p) * 0.06) color-mix(in srgb, var(--z) 75%, transparent);
}

.motion .key::before,
.motion .key .lg {
  transition:
    transform 110ms cubic-bezier(0.3, 0.7, 0.4, 1),
    background-color 420ms ease-out,
    box-shadow 420ms ease-out;
}
.motion .key.is-down::before,
.motion .key.is-down .lg {
  transition-duration: 40ms, 60ms, 60ms;
}

/* Night: dark caps, legends glowing in their zone colours, a little light bleeding round each key. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .key:not(.mod):not(.thumb) {
    --legend: var(--z);
  }
  :root:not([data-theme="light"]) .key:not(.mod):not(.thumb) .lg {
    text-shadow: 0 0 6px color-mix(in srgb, var(--z) 70%, transparent), 0 0 16px color-mix(in srgb, var(--z) 40%, transparent);
  }
  :root:not([data-theme="light"]) .key:not(.mod):not(.thumb) {
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--z) 14%, transparent), 0 calc(var(--depth) * 0.4) calc(var(--p) * 0.28) color-mix(in srgb, var(--z) 22%, transparent);
  }
  :root:not([data-theme="light"]) .key.is-lit {
    --capc: color-mix(in srgb, var(--z) 34%, var(--cap));
    --legend: #ffffff;
  }
}
:root[data-theme="dark"] .key:not(.mod):not(.thumb) {
  --legend: var(--z);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--z) 14%, transparent), 0 calc(var(--depth) * 0.4) calc(var(--p) * 0.28) color-mix(in srgb, var(--z) 22%, transparent);
}
:root[data-theme="dark"] .key:not(.mod):not(.thumb) .lg {
  text-shadow: 0 0 6px color-mix(in srgb, var(--z) 70%, transparent), 0 0 16px color-mix(in srgb, var(--z) 40%, transparent);
}
:root[data-theme="dark"] .key.is-lit {
  --capc: color-mix(in srgb, var(--z) 34%, var(--cap));
  --legend: #ffffff;
}

/* ---------- hero ---------- */

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: clamp(20px, 4vh, 48px) clamp(48px, 8vh, 96px);
  text-align: center;
}

h1,
h2,
h3 {
  font-family: "Rubik", system-ui, sans-serif;
  margin: 0;
}

.hero h1 {
  max-width: 12.5em;
  font-size: clamp(2rem, 1.1rem + 3.9vw, 4.6rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.028em;
  text-wrap: balance;
}

.lede {
  max-width: 35em;
  margin: clamp(12px, 2vh, 20px) 0 0;
  color: var(--soft);
  font-size: clamp(1rem, 0.92rem + 0.4vw, 1.25rem);
  line-height: 1.5;
  text-wrap: pretty;
}

.art--hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin-top: clamp(20px, 4vh, 40px);
}

.addr {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(100%, 460px);
  height: clamp(48px, 6vh, 60px);
  padding: 0 22px 0 18px;
  border-radius: 999px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line), 0 14px 30px -18px rgb(var(--shade) / 0.45), 0 2px 4px rgb(var(--shade) / 0.06);
  text-align: left;
}

.addr-lock {
  flex: none;
  fill: none;
  stroke: var(--soft);
  stroke-width: 1.5;
  stroke-linecap: round;
}

.addr-text {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  font: 500 clamp(1.15rem, 0.9rem + 0.9vw, 1.55rem) / 1 "JetBrains Mono", ui-monospace, monospace;
  letter-spacing: -0.01em;
  white-space: pre;
}

.addr-text .host {
  color: var(--ink);
}
.addr-text .code {
  color: var(--action);
}

.caret {
  display: inline-block;
  width: 2px;
  height: 1.15em;
  margin-left: 2px;
  border-radius: 1px;
  background: var(--action);
  vertical-align: middle;
}

.motion .addr:not(.is-typing) .caret {
  animation: blink 1.05s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

.addr.is-selected .host,
.addr.is-selected .code {
  background: color-mix(in srgb, var(--action) 22%, transparent);
}

.addr.is-wrong .code {
  color: var(--ink);
  text-decoration: underline wavy var(--bad);
  text-decoration-thickness: 2px;
  text-underline-offset: 7px;
  text-decoration-skip-ink: none;
}

.kb-frame {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: clamp(16px, 3vh, 30px);
}

.art--hero .kb {
  --p: clamp(36px, calc((100vw - 64px) / 15.8), 60px);
}

/* Phones: the three letter rows only, cropped round the home row and bleeding off both edges. */
@media (max-width: 640px) {
  .kb--full .r-num,
  .kb--full .r-space {
    display: none;
  }
  .art--hero .kb-frame {
    width: 100vw;
    overflow: hidden;
    margin-top: 10px;
    padding-block: 6px 34px;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
    mask-image: linear-gradient(90deg, transparent, #000 4%, #000 96%, transparent);
  }
  .art--hero .kb {
    --p: calc(100vw / 11.5);
    padding: calc(var(--p) * 0.26);
    transform: translateX(calc(var(--p) * 0.6));
    box-shadow:
      inset 0 1px 0 rgb(255 255 255 / var(--shine)),
      inset 0 -2px 0 var(--plate-lo),
      0 14px 22px -14px rgb(var(--shade) / 0.35);
  }
}

/* ---------- race ---------- */

.race {
  padding-bottom: clamp(56px, 9vh, 104px);
}

.race-card {
  max-width: 960px;
  margin-inline: auto;
  padding: clamp(20px, 3.4vw, 40px);
  border-radius: 28px;
  background: var(--card);
  box-shadow: 0 0 0 1px var(--line), 0 30px 60px -40px rgb(var(--shade) / 0.5);
}

.race-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 20px;
}

.race-head h2 {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 22px 0 18px;
  border: 0;
  border-radius: 14px;
  background: var(--action);
  color: var(--on-action);
  font: 700 1rem/1 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  cursor: pointer;
  box-shadow: inset 0 -3px 0 rgb(0 0 0 / 0.22), 0 6px 14px -6px color-mix(in srgb, var(--action) 70%, transparent);
  -webkit-tap-highlight-color: transparent;
}

.btn-icon {
  fill: currentColor;
}

.motion .btn {
  transition: transform 60ms ease-out, box-shadow 60ms ease-out;
}
.btn:active {
  transform: translateY(2px);
  box-shadow: inset 0 -1px 0 rgb(0 0 0 / 0.22), 0 3px 8px -6px color-mix(in srgb, var(--action) 70%, transparent);
}

.lanes {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.lane {
  display: grid;
  grid-template-columns: 8.5rem minmax(0, 1fr) 6.5rem;
  grid-template-areas: "name track time";
  align-items: start;
  gap: 8px 18px;
}

.lane-name {
  grid-area: name;
  padding-top: 13px;
  font-weight: 650;
  font-size: 0.95rem;
}

.lane-track {
  grid-area: track;
  min-height: 48px;
  padding: 11px 16px;
  border-radius: 14px;
  background: var(--sunk);
  box-shadow: inset 0 0 0 1px var(--line);
  font: 500 0.9rem/1.75 "JetBrains Mono", ui-monospace, monospace;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.lane--short .lane-track {
  font-size: 1rem;
}

.lane-track .typed {
  color: var(--ink);
}

.lane-track .caret {
  display: none;
  height: 1.25em;
  margin: 0 1px 0 0;
}
.lane.is-typing .caret {
  display: inline-block;
}

.lane-track .rest {
  color: transparent;
  background: var(--track);
  border-radius: 3px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.lane-time {
  grid-area: time;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-height: 48px;
  font: 500 1.2rem/1 "JetBrains Mono", ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.lane-check,
.lane-ff {
  display: none;
  flex: none;
}
.lane-check circle {
  fill: var(--ok);
}
.lane-check path {
  fill: none;
  stroke: var(--ok-ink);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.lane-ff {
  fill: var(--action);
}

.lane.is-skipping .lane-ff,
.lane--short.is-done .lane-check,
.turn.is-done .lane-check {
  display: block;
}

.lane.is-done .lane-track {
  box-shadow: inset 0 0 0 1px var(--line);
}
.lane--short.is-done .lane-track {
  box-shadow: inset 0 0 0 2px var(--ok);
}

.motion .lane--short.is-done .lane-check,
.motion .turn.is-done .lane-check {
  animation: pop 260ms cubic-bezier(0.3, 1.6, 0.5, 1);
}

@keyframes pop {
  from {
    transform: scale(0.4);
  }
}

.strip {
  display: flex;
  justify-content: center;
  margin-top: clamp(24px, 3.5vw, 36px);
}

.kb--strip {
  --p: clamp(32px, calc((100vw - 88px) / 9.6), 50px);
}

.turn {
  margin-top: clamp(24px, 3.5vw, 36px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: 1px dashed var(--line);
}

.turn h3 {
  font-size: 1.35rem;
  font-weight: 700;
}

.turn-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.turn-input {
  flex: 1;
  min-width: 0;
  height: 56px;
  padding: 0 18px;
  border: 2px solid var(--line);
  border-radius: 14px;
  background: var(--sunk);
  color: var(--ink);
  font: 500 1.2rem/1 "JetBrains Mono", ui-monospace, monospace;
  caret-color: var(--action);
}

.turn-input::placeholder {
  color: var(--soft);
  opacity: 1;
}

.turn-input:focus {
  outline: none;
  border-color: var(--action);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--action) 22%, transparent);
}

.turn.is-done .turn-input {
  border-color: var(--ok);
}

.turn-time {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  min-width: 6.5rem;
  font: 500 1.35rem/1 "JetBrains Mono", ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.turn-note {
  margin: 12px 0 0;
  color: var(--soft);
  font-size: 0.9rem;
}

/* ---------- steps ---------- */

.steps {
  padding-bottom: clamp(56px, 9vh, 104px);
}

.step-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(28px, 4vw, 56px);
  max-width: 1040px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.step h3 {
  margin-top: 22px;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.step p {
  margin: 6px 0 0;
  color: var(--soft);
  font-size: 1.05rem;
}

.kb--word {
  --p: 50px;
}

/* ---------- 404 ---------- */

.nf {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: clamp(20px, 5vh, 56px) clamp(56px, 10vh, 112px);
  text-align: center;
}

.nf h1 {
  max-width: 14em;
  font-size: clamp(2rem, 1.2rem + 3.2vw, 4rem);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.nf-typo {
  display: block;
}

.nf .btn {
  margin-top: clamp(24px, 4vh, 40px);
  padding-inline: 22px;
  text-decoration: none;
}

/* ---------- footer ---------- */

.foot {
  padding-block: 28px 40px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.foot-line {
  margin: 0;
  color: var(--soft);
  font-size: 0.9rem;
}

.foot-line a {
  color: var(--action);
  text-underline-offset: 3px;
}

/* ---------- narrow screens ---------- */

@media (max-width: 760px) {
  .lane {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "name time"
      "track track";
    gap: 4px 12px;
  }
  .lane-name {
    padding-top: 0;
    align-self: center;
  }
  .lane-time {
    min-height: 32px;
    font-size: 1.05rem;
  }
  .step-list {
    grid-template-columns: 1fr;
    max-width: 420px;
  }
  .kb--word {
    --p: 46px;
  }
}

@media (max-width: 640px) {
  .bar {
    padding-block: 12px;
  }
  .hero {
    padding-bottom: 28px;
  }
  .theme span {
    padding: 6px 10px;
  }
  .race-card {
    border-radius: 22px;
  }
  .race-head .btn {
    width: 100%;
    justify-content: center;
  }
  .turn-row {
    gap: 12px;
  }
  .turn-time {
    min-width: 5.2rem;
    font-size: 1.15rem;
  }
}