/* Keyboard ---------------------------------------------------------- */
/* The composition is drawn at 900 x 317 (312 plus the 5px shadow) and
   scaled as one unit to the width of its container. keyboard.js sets
   --scale to min(1, available width / 900); the values below only
   cover the moment before it runs. */
.hero__keys {
  position: relative;
  padding: 0.5rem var(--gutter) clamp(1.75rem, 2.6vw, 2.25rem);
}

.keyboard {
  --scale: 0.36;
  width: calc(900px * var(--scale));
  height: calc(317px * var(--scale));
  margin-inline: auto;
}

@media (min-width: 600px) {
  .keyboard { --scale: 0.55; }
}

@media (min-width: 1000px) {
  .keyboard { --scale: 1; }
}

.keyboard__stage {
  position: relative;
  width: 900px;
  height: 317px;
  transform: scale(var(--scale));
  transform-origin: 0 0;
}

.key {
  position: absolute;
  /* Keys span 0-875px, so 12px centres them in the 900px stage. */
  left: calc(var(--x) + 12px);
  top: var(--y);
  z-index: 1;
  width: 146px;
  height: 161px;
  border-radius: 38px;
  color: var(--ink-key);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.key--lower {
  z-index: 2;
}

.key--enter {
  width: 218px;
  height: 300px;
}

.key:focus-visible {
  z-index: 3;
  outline: 4px solid var(--ink-key);
  outline-offset: 5px;
  border-radius: 38px;
}

.key__base,
.key__face {
  position: absolute;
  border: 2px solid var(--ink-key);
  transition: transform 180ms var(--ease-out), box-shadow 180ms var(--ease-out);
}

.key__base {
  inset: 0;
  border-radius: 38px;
  background: linear-gradient(180deg, var(--base) 55%, color-mix(in srgb, var(--base), #000 14%));
  box-shadow: 0 5px 0 var(--ink-key);
}

/* Angled seams where the face meets the side wall. */
.key__base::before,
.key__base::after {
  content: "";
  position: absolute;
  bottom: 7px;
  width: 2px;
  height: 27px;
  border-radius: 1px;
  background: var(--ink-key);
  opacity: 0.5;
  pointer-events: none;
}

.key__base::before {
  left: 12px;
  transform: rotate(24deg);
}

.key__base::after {
  right: 12px;
  transform: rotate(-24deg);
}

.key__face {
  top: 4px;
  right: 10px;
  bottom: 33px;
  left: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 29px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--face), #fff 34%), var(--face) 58%);
}

.key__letter {
  font-family: var(--font-display);
  font-size: 72px;
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.05em;
}

.key__caption {
  font-size: 10px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* Enter: the lower-left of the face sits under the final O, so the
   arrow and caption stay in the exposed top and right. */
.key--enter .key__face {
  display: block;
}

.key__return {
  position: absolute;
  top: 30px;
  left: 30px;
  width: 104px;
  height: auto;
  pointer-events: none;
}

/* Rotated rather than vertical writing-mode: Safari lacks
   text-orientation: sideways and stands the apostrophe up. */
.key--enter .key__caption {
  position: absolute;
  top: 50%;
  left: calc(100% - 22px);
  font-size: 11px;
  letter-spacing: 0.16em;
  transform: translate(-50%, -50%) rotate(90deg);
}

/* Press states ------------------------------------------------------ */
@media (hover: hover) {
  .key:hover .key__face {
    transform: translateY(8px);
  }
}

.key:focus-visible .key__face {
  transform: translateY(8px);
}

.key.is-pressed .key__face,
.key:active .key__face {
  transform: translateY(13px);
}

.key.is-pressed .key__base {
  transform: translateY(4px);
  box-shadow: 0 1px 0 var(--ink-key);
}

.key:active .key__base {
  transform: translateY(5px);
  box-shadow: 0 0 0 var(--ink-key);
}

@media (prefers-reduced-motion: reduce) {
  .key__base,
  .key__face {
    transition-duration: 1ms;
  }
}