:root {
  --paper: #efede5;
  --paper-bright: #f7f5ee;
  --ink: #19201e;
  --ink-soft: #626863;
  --rule: rgba(25, 32, 30, 0.18);
  --rule-strong: rgba(25, 32, 30, 0.46);
  --blue: #2f55d9;
  --orange: #f05b3f;
  --acid: #d6e44e;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --max: 1500px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 9% 5%, rgba(255, 255, 255, 0.72), transparent 28rem),
    linear-gradient(rgba(25, 32, 30, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(25, 32, 30, 0.018) 1px, transparent 1px),
    var(--paper);
  background-size: auto, 24px 24px, 24px 24px, auto;
}

button,
input {
  color: inherit;
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 1rem;
  left: 1rem;
  padding: 0.75rem 1rem;
  color: white;
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  width: min(100% - 48px, var(--max));
  margin: 0 auto;
}

.masthead {
  min-height: 108px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--ink);
}

.wordmark {
  width: fit-content;
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.4rem;
  font-style: italic;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.wordmark-mark {
  width: 20px;
  height: 20px;
  border: 1px solid var(--ink);
  border-radius: 50%;
  box-shadow: inset 6px 0 0 var(--acid);
}

.masthead-note {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.drift-clock {
  display: flex;
  justify-self: end;
  gap: 0.7rem;
  align-items: center;
}

.clock-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0;
  border: 0;
  background: none;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.clock-orbit {
  width: 17px;
  height: 17px;
  border: 1px solid var(--rule-strong);
  border-radius: 50%;
  position: relative;
}

.clock-orbit::after {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  position: absolute;
  top: -2px;
  left: 5px;
  background: var(--orange);
}

.clock-button.is-running .clock-orbit {
  animation: turn 4s linear infinite;
}

.clock-label {
  color: var(--ink-soft);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.garden {
  padding: 54px 0 36px;
}

.garden-heading {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 5vw;
  align-items: end;
  margin-bottom: 38px;
}

.section-index {
  margin: 0 0 1rem;
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
p {
  text-wrap: pretty;
}

h1 {
  max-width: 820px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(4.4rem, 8.5vw, 9rem);
  font-weight: 400;
  letter-spacing: -0.07em;
  line-height: 0.76;
}

.garden-intro {
  max-width: 410px;
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.5vw, 1.35rem);
  font-style: italic;
  line-height: 1.45;
}

.field {
  height: clamp(570px, 60vw, 790px);
  min-height: 570px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--ink);
  background:
    radial-gradient(circle at 62% 38%, rgba(214, 228, 78, 0.22), transparent 16%),
    radial-gradient(circle at 62% 38%, transparent 0 23%, rgba(25, 32, 30, 0.07) 23.1% 23.25%, transparent 23.4%),
    radial-gradient(circle at 62% 38%, transparent 0 39%, rgba(25, 32, 30, 0.045) 39.1% 39.25%, transparent 39.4%),
    rgba(247, 245, 238, 0.46);
}

#threads,
.node-layer {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
}

.node {
  --node-colour: var(--blue);
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  position: absolute;
  background: transparent;
  transform: translate(-50%, -50%);
  transition: filter 180ms ease;
}

.node::before,
.node::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.node::before {
  width: var(--node-size, 13px);
  height: var(--node-size, 13px);
  background: var(--node-colour);
  box-shadow: 0 0 0 0 rgba(47, 85, 217, 0.18);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.node::after {
  width: calc(var(--node-size, 13px) + 18px);
  height: calc(var(--node-size, 13px) + 18px);
  border: 1px solid var(--node-colour);
  opacity: 0.26;
  transition: opacity 180ms ease, transform 180ms ease;
}

.node:hover::before,
.node:focus-visible::before,
.node.is-active::before,
.node.is-meeting::before {
  transform: scale(1.35);
  box-shadow: 0 0 0 12px color-mix(in srgb, var(--node-colour) 13%, transparent);
}

.node:hover::after,
.node:focus-visible::after,
.node.is-active::after,
.node.is-meeting::after {
  opacity: 0.76;
  transform: scale(1.22);
}

.node-label {
  width: 130px;
  position: absolute;
  top: calc(50% + 25px);
  left: 50%;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  line-height: 1.35;
  text-align: center;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.field-key {
  display: flex;
  gap: 1rem;
  position: absolute;
  top: 22px;
  left: 24px;
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field-key span {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
}

.key-dot {
  width: 7px;
  height: 7px;
  display: inline-block;
  border-radius: 50%;
}

.key-origin { background: var(--blue); }
.key-planted { background: var(--orange); }
.key-crossed { background: var(--acid); border: 1px solid var(--ink); }

.field-hint {
  max-width: 200px;
  margin: 0;
  position: absolute;
  right: 24px;
  bottom: 21px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.58rem;
  line-height: 1.5;
  text-align: right;
  text-transform: uppercase;
}

.question-card {
  width: min(420px, calc(100% - 40px));
  min-height: 250px;
  padding: 24px;
  position: absolute;
  z-index: 20;
  right: 20px;
  bottom: 20px;
  border: 1px solid var(--ink);
  background: rgba(247, 245, 238, 0.94);
  box-shadow: 8px 8px 0 var(--ink);
  backdrop-filter: blur(9px);
  animation: card-in 260ms ease both;
}

.question-card[hidden] {
  display: none;
}

.card-topline,
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.icon-button,
.text-button {
  border: 0;
  background: none;
}

.icon-button {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  padding: 0;
  font-size: 1.5rem;
}

.card-question {
  margin: 40px 0 45px;
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  letter-spacing: -0.035em;
  line-height: 1.06;
}

.text-button {
  padding: 0 0 3px;
  border-bottom: 1px solid currentColor;
  font-size: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
}

.text-button.is-kept::before {
  content: "✦ ";
  color: var(--orange);
}

.workbench {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: clamp(3rem, 8vw, 9rem);
  padding: 100px 0 130px;
}

.workbench-heading h2 {
  max-width: 480px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 5vw, 6rem);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.91;
}

.seed-form {
  margin-bottom: 72px;
}

.seed-form label {
  display: block;
  margin-bottom: 20px;
  font-family: var(--mono);
  font-size: 0.61rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  border-bottom: 1px solid var(--ink);
}

.input-row input {
  min-width: 0;
  padding: 14px 0 18px;
  border: 0;
  background: transparent;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  letter-spacing: -0.025em;
}

.input-row input::placeholder {
  color: rgba(25, 32, 30, 0.34);
}

.plant-button {
  display: inline-flex;
  gap: 1.2rem;
  align-items: center;
  padding: 0 0.2rem 0 2rem;
  border: 0;
  background: transparent;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.plant-button:hover span:last-child,
.intervention:hover .intervention-arrow {
  transform: translate(4px, -4px);
}

.plant-button span:last-child,
.intervention-arrow {
  transition: transform 160ms ease;
}

.interventions {
  border-top: 1px solid var(--ink);
}

.intervention {
  width: 100%;
  min-height: 104px;
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 18px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: transparent;
  text-align: left;
}

.intervention:hover {
  background: rgba(255, 255, 255, 0.24);
}

.intervention-number {
  font-family: var(--mono);
  font-size: 0.6rem;
}

.intervention-copy {
  display: grid;
  gap: 0.35rem;
}

.intervention-copy strong {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: -0.02em;
}

.intervention-copy small {
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.intervention-arrow {
  font-size: 1.3rem;
}

.sound-glyph {
  height: 20px;
  display: flex;
  gap: 3px;
  align-items: center;
}

.sound-glyph i {
  width: 2px;
  height: 5px;
  display: block;
  background: var(--ink);
}

.sound-glyph i:nth-child(2) { height: 13px; }
.sound-glyph i:nth-child(3) { height: 9px; }
.sound-glyph i:nth-child(4) { height: 17px; }

#sound-button[aria-pressed="true"] .sound-glyph i {
  animation: listen 0.9s ease-in-out infinite alternate;
}

#sound-button[aria-pressed="true"] .sound-glyph i:nth-child(2) { animation-delay: -0.25s; }
#sound-button[aria-pressed="true"] .sound-glyph i:nth-child(3) { animation-delay: -0.5s; }
#sound-button[aria-pressed="true"] .sound-glyph i:nth-child(4) { animation-delay: -0.72s; }

.footer {
  min-height: 120px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--ink);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.toast {
  max-width: calc(100% - 32px);
  padding: 0.8rem 1rem;
  position: fixed;
  z-index: 100;
  right: 22px;
  bottom: 22px;
  color: var(--paper-bright);
  background: var(--ink);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes turn {
  to { transform: rotate(360deg); }
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(12px) rotate(0.4deg); }
}

@keyframes listen {
  to { transform: scaleY(0.32); }
}

@media (max-width: 800px) {
  .app-shell {
    width: min(100% - 28px, var(--max));
  }

  .masthead {
    min-height: 88px;
    grid-template-columns: 1fr auto;
  }

  .masthead-note,
  .clock-label {
    display: none;
  }

  .garden {
    padding-top: 38px;
  }

  .garden-heading,
  .workbench {
    grid-template-columns: 1fr;
  }

  .garden-heading {
    gap: 2rem;
  }

  h1 {
    font-size: clamp(4rem, 20vw, 6.2rem);
    line-height: 0.8;
  }

  .garden-intro {
    max-width: 340px;
  }

  .field {
    height: 660px;
  }

  .field-key {
    gap: 0.7rem;
    top: 16px;
    left: 14px;
  }

  .node-label {
    width: 104px;
    font-size: 0.52rem;
  }

  .question-card {
    width: calc(100% - 24px);
    right: 12px;
    bottom: 12px;
  }

  .field-hint {
    right: 14px;
    bottom: 14px;
  }

  .workbench {
    gap: 4rem;
    padding: 75px 0 100px;
  }

  .seed-form {
    margin-bottom: 54px;
  }

  .footer {
    min-height: 130px;
    display: grid;
    gap: 0.4rem;
    align-content: center;
  }
}

@media (max-width: 460px) {
  .wordmark {
    font-size: 1.2rem;
  }

  h1 {
    font-size: clamp(3.65rem, 19vw, 5rem);
  }

  .field-key span {
    font-size: 0;
  }

  .field-key span::after {
    content: attr(data-short);
  }

  .input-row {
    grid-template-columns: 1fr;
  }

  .plant-button {
    justify-content: space-between;
    padding: 14px 0;
    border-top: 1px solid var(--rule);
  }
}

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