:root {
  color-scheme: light;
  --paper: #f1eee4;
  --ink: #121210;
  --soft-ink: #4c4a43;
  --left-bank: 0px;
  --right-bank: 0px;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--paper);
  color: var(--ink);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-width: 0;
  min-height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--paper);
}

body {
  min-height: 100svh;
  touch-action: manipulation;
}

button,
kbd,
output {
  font: inherit;
}

.experience {
  position: relative;
  display: grid;
  grid-template-rows: minmax(72px, 12vh) minmax(0, 1fr) minmax(54px, 8vh);
  width: 100%;
  height: 100svh;
  height: 100dvh;
  min-width: 0;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 17% 14%, rgb(18 18 16 / 2%) 0 0.7px, transparent 0.9px) 0 0 / 9px 11px,
    radial-gradient(circle at 78% 72%, rgb(18 18 16 / 1.5%) 0 0.6px, transparent 0.9px) 0 0 / 13px 15px,
    var(--paper);
}

.edge-copy {
  z-index: 3;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: clamp(1rem, 4vw, 5rem);
  min-width: 0;
  padding: max(0.85rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
}

.identity {
  min-width: 0;
}

.date-mark {
  margin: 0 0 0.3rem;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.62rem;
  line-height: 1;
  letter-spacing: 0.15em;
}

h1 {
  margin: 0;
  font-size: clamp(0.98rem, 1.4vw, 1.25rem);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0.01em;
}

.instruction {
  width: min(29rem, 56vw);
  min-width: 0;
  margin: 0.1rem 0 0;
  text-align: right;
  font-size: clamp(0.72rem, 1vw, 0.86rem);
  line-height: 1.35;
  color: var(--soft-ink);
}

.instruction span {
  white-space: nowrap;
}

kbd {
  display: inline-block;
  min-width: 1.2em;
  border-bottom: 1px solid currentColor;
  color: var(--ink);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.9em;
  line-height: 1.1;
  text-align: center;
}

.landscape {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  cursor: ew-resize;
}

#river-canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: transparent;
}

.bank {
  position: absolute;
  z-index: 4;
  top: 57%;
  display: grid;
  place-items: center;
  width: 54px;
  min-width: 54px;
  height: 82px;
  min-height: 82px;
  padding: 0;
  border: 0;
  border-radius: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  cursor: ew-resize;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}

.bank--left {
  left: calc(max(0.25rem, env(safe-area-inset-left)) + var(--left-bank));
  transform: translateY(-50%);
}

.bank--right {
  right: calc(max(0.25rem, env(safe-area-inset-right)) + var(--right-bank));
  transform: translateY(-50%);
}

.bank__mark {
  position: relative;
  width: 18px;
  height: 60px;
}

.bank__mark::before,
.bank__mark::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--ink);
  box-shadow: 4px 8px 0 -0.5px var(--ink), -3px 29px 0 -0.5px var(--ink);
}

.bank--left .bank__mark::before {
  left: 4px;
  transform: rotate(-2deg);
}

.bank--left .bank__mark::after {
  right: 3px;
  top: 15px;
  bottom: 9px;
  transform: rotate(3deg);
}

.bank--right .bank__mark::before {
  right: 4px;
  transform: rotate(2deg);
}

.bank--right .bank__mark::after {
  left: 3px;
  top: 9px;
  bottom: 15px;
  transform: rotate(-3deg);
}

.bank__word {
  position: absolute;
  bottom: 0;
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.55rem;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.62;
}

.bank:hover .bank__word,
.bank:focus-visible .bank__word {
  opacity: 1;
}

.bank:focus-visible {
  outline: 0;
  background: transparent;
}

.bank:focus-visible .bank__mark {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

.bank:active .bank__mark {
  transform: scaleX(0.86);
}

.bank.is-inset:not(:focus-visible) .bank__mark {
  opacity: 0.72;
  transform: scale(0.86);
}

.bank.is-inset:not(:focus-visible) .bank__word {
  opacity: 0.38;
}

.river-notes {
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 1rem;
  min-width: 0;
  padding: 0 max(1rem, env(safe-area-inset-right)) max(0.8rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: clamp(0.62rem, 0.8vw, 0.72rem);
  line-height: 1.2;
  letter-spacing: 0.06em;
  text-transform: lowercase;
}

.conservation,
.river-status {
  min-width: 0;
}

.conservation::before {
  content: "";
  display: inline-block;
  width: 2.8rem;
  height: 0.38rem;
  margin-right: 0.65rem;
  background: var(--ink);
  vertical-align: 0.02rem;
  clip-path: polygon(0 20%, 13% 4%, 29% 18%, 42% 0, 57% 15%, 72% 5%, 100% 24%, 97% 88%, 81% 100%, 62% 82%, 49% 100%, 27% 84%, 8% 96%);
}

.river-status {
  text-align: right;
  color: var(--soft-ink);
}

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

.no-script {
  position: fixed;
  right: 1rem;
  bottom: max(1rem, env(safe-area-inset-bottom));
  max-width: 25rem;
  margin: 0;
  font-size: 0.8rem;
}

@media (max-width: 680px) {
  .experience {
    grid-template-rows: minmax(90px, 15vh) minmax(0, 1fr) minmax(64px, 10vh);
  }

  .edge-copy {
    gap: 0.6rem;
    padding-top: max(0.7rem, env(safe-area-inset-top));
  }

  .date-mark {
    font-size: 0.52rem;
  }

  h1 {
    max-width: 8rem;
    font-size: 0.9rem;
    line-height: 1.08;
  }

  .instruction {
    width: 55vw;
    font-size: 0.66rem;
  }

  .instruction span {
    display: block;
    white-space: normal;
  }

  .bank {
    top: 61%;
    width: 48px;
    min-width: 48px;
    height: 76px;
    min-height: 76px;
  }

  .bank__word {
    opacity: 0.82;
  }

  .river-notes {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    gap: 0.35rem;
    align-content: end;
  }

  .river-status {
    text-align: left;
  }
}

@media (max-height: 520px) {
  .experience {
    grid-template-rows: 64px minmax(0, 1fr) 48px;
  }

  .date-mark {
    display: none;
  }

  .edge-copy {
    padding-top: max(0.55rem, env(safe-area-inset-top));
  }

  .bank {
    top: 54%;
    height: 60px;
    min-height: 60px;
  }

  .bank__mark {
    height: 46px;
  }

  .river-notes {
    padding-bottom: max(0.4rem, env(safe-area-inset-bottom));
  }
}

@media (pointer: coarse) {
  .bank__word {
    opacity: 1;
  }

  .bank::after {
    content: "";
    position: absolute;
    inset: 8px 3px 11px;
    border-top: 1px solid rgb(18 18 16 / 28%);
    border-bottom: 1px solid rgb(18 18 16 / 28%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}