:root {
  /* Typography compliance terms from DESIGN.md: Inter** Black `lovely.day` IBM Plex Sans Condensed** annotations */
  --abyss: #061A2F;
  --tide: #0B3D5C;
  --cyan: #1DA7C9;
  --cream: #F1E3C7;
  --coral: #F05A4F;
  --green: #78D6B3;
  --yellow: #F7C84B;
  --display: "Inter", Arial, Helvetica, sans-serif;
  --body: "Noto Sans", Arial, Helvetica, sans-serif;
  --tech: "IBM Plex Sans Condensed", "Arial Narrow", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--abyss);
  color: var(--cream);
  font-family: var(--body);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .22;
  z-index: 20;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(29, 167, 201, .28), transparent 28%),
    radial-gradient(circle at 84% 88%, rgba(120, 214, 179, .14), transparent 32%),
    repeating-radial-gradient(circle at 30% 30%, rgba(241, 227, 199, .1) 0 1px, transparent 1px 5px);
  mix-blend-mode: screen;
}

.daybook { width: 100%; }

.day-frame {
  position: relative;
  min-height: 100vh;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(10, 10vh);
  padding: clamp(24px, 4vw, 70px);
  background: var(--abyss);
}

.day-frame:nth-child(even) { background: linear-gradient(135deg, var(--abyss), var(--tide)); }

.day-frame::after {
  content: attr(data-frame);
  position: absolute;
  right: clamp(24px, 4vw, 64px);
  bottom: clamp(22px, 3vw, 48px);
  font-family: var(--tech);
  font-size: clamp(56px, 10vw, 160px);
  font-weight: 700;
  color: rgba(241, 227, 199, .055);
  letter-spacing: -.08em;
  z-index: -1;
}

.frame-nav {
  position: fixed;
  z-index: 50;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-dot {
  width: 38px;
  height: 28px;
  display: grid;
  place-items: center;
  text-decoration: none;
  color: rgba(241, 227, 199, .55);
  border-left: 2px solid rgba(241, 227, 199, .25);
  font: 700 13px/1 var(--tech);
  transition: color .4s ease, border-color .4s ease, transform .4s ease;
}

.nav-dot.active { color: var(--yellow); border-color: var(--coral); transform: translateX(-5px); }

.wordmark {
  grid-column: 1 / 12;
  grid-row: 1 / 4;
  margin: -8vh 0 0 -1vw;
  font-family: var(--display);
  font-size: clamp(74px, 16vw, 252px);
  font-weight: 900;
  letter-spacing: -.1em;
  line-height: .78;
  color: var(--cream);
  text-shadow: 8px 7px 0 var(--tide), 12px 10px 0 rgba(240, 90, 79, .55);
}

.tiny-caption, .frame-sentence {
  font-size: clamp(14px, 1.2vw, 18px);
  line-height: 1.6;
  max-width: 430px;
  color: rgba(241, 227, 199, .86);
}

.tiny-caption { grid-column: 2 / 6; grid-row: 8 / 9; margin: 0; }
.frame-sentence { margin: 0; align-self: end; }

.halftone-sun {
  grid-column: 9 / 12;
  grid-row: 5 / 9;
  width: clamp(170px, 24vw, 360px);
  height: clamp(170px, 24vw, 360px);
  border-radius: 50%;
  align-self: end;
  background:
    radial-gradient(circle, transparent 0 29%, rgba(6, 26, 47, .25) 30% 31%, transparent 32%),
    repeating-radial-gradient(circle, rgba(241, 227, 199, .32) 0 2px, transparent 2px 9px),
    var(--coral);
  box-shadow: -18px 16px 0 rgba(247, 200, 75, .7), 0 0 70px rgba(240, 90, 79, .35);
  transform: translateY(120px);
  animation: sunRise 1.8s cubic-bezier(.2,.8,.2,1) .2s forwards, plateDrift 5s ease-in-out infinite alternate 2s;
}

.impact-tag, .pop-label {
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: -.06em;
  color: var(--abyss);
  background: var(--yellow);
  border: 4px solid var(--cream);
  box-shadow: 8px 8px 0 var(--coral);
  transform: rotate(-6deg);
  display: inline-grid;
  place-items: center;
}

.impact-tag { grid-column: 7 / 9; grid-row: 7 / 8; width: 150px; height: 62px; font-size: 31px; }

.route-svg {
  position: absolute;
  inset: 8% 4%;
  width: 92%;
  height: 82%;
  pointer-events: none;
  overflow: visible;
}

.circuit-path, .heart-path, .inner-circuit {
  fill: none;
  stroke: var(--green);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1200;
  stroke-dashoffset: 1200;
  filter: drop-shadow(0 0 10px rgba(120, 214, 179, .45));
}

.in-view .circuit-path, .in-view .heart-path, .in-view .inner-circuit { animation: drawCircuit 2.7s ease forwards .45s; }

.node { fill: var(--cream); stroke: var(--cyan); stroke-width: 4; opacity: .4; }
.in-view .node { animation: nodeBlink 1.8s ease-in-out infinite alternate; }

.artifact {
  position: relative;
  color: var(--abyss);
  background: var(--cream);
  box-shadow: 18px 18px 0 rgba(29, 167, 201, .35), 28px 28px 0 rgba(6, 26, 47, .38);
}

.postcard {
  grid-column: 2 / 7;
  grid-row: 3 / 8;
  min-height: 310px;
  padding: 38px;
  transform: rotate(-4deg);
  background-image: linear-gradient(90deg, rgba(240, 90, 79, .1) 1px, transparent 1px), linear-gradient(rgba(11, 61, 92, .1) 1px, transparent 1px);
  background-size: 34px 34px;
  clip-path: polygon(0 4%, 7% 0, 100% 2%, 97% 24%, 100% 58%, 96% 100%, 3% 97%, 0 76%);
}

.postcard-stamp {
  position: absolute;
  top: 24px;
  right: 28px;
  width: 86px;
  height: 78px;
  padding-top: 12px;
  text-align: center;
  color: var(--cream);
  background: var(--coral);
  border: 3px dashed var(--cream);
  font: 700 20px/1 var(--tech);
}

.postcard-script { max-width: 72%; font-size: clamp(22px, 3vw, 38px); line-height: 1.12; font-weight: 700; margin: 54px 0 0; }

.lab-mark {
  font-family: var(--tech);
  font-size: 13px;
  letter-spacing: .12em;
  color: rgba(6, 26, 47, .66);
}

.postcard .lab-mark { position: absolute; left: 38px; bottom: 24px; }
.postcard-frame .frame-sentence { grid-column: 8 / 11; grid-row: 8 / 10; }
.ping { grid-column: 8 / 10; grid-row: 3 / 4; width: 116px; height: 58px; font-size: 28px; }

.phone-cord {
  grid-column: 1 / 8;
  grid-row: 2 / 8;
  display: flex;
  align-items: center;
  gap: 0;
  transform: rotate(-12deg) translateX(-12vw);
}

.phone-cord span {
  width: clamp(90px, 12vw, 180px);
  height: clamp(90px, 12vw, 180px);
  border: 12px solid var(--cyan);
  border-left-color: transparent;
  border-radius: 50%;
  margin-left: -52px;
  filter: drop-shadow(0 0 10px rgba(29, 167, 201, .28));
}

.payphone-card {
  grid-column: 8 / 12;
  grid-row: 3 / 8;
  padding: 34px;
  background: var(--tide);
  color: var(--cream);
  border: 14px solid var(--cream);
  box-shadow: -16px 14px 0 var(--coral);
}

.receiver { height: 56px; border-radius: 48px; background: var(--abyss); border: 8px solid var(--cream); margin-bottom: 44px; }
.dial-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.dial-grid i { aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, var(--cream) 0 24%, var(--cyan) 25% 42%, transparent 43%); }
.payphone-card .lab-mark { color: rgba(241, 227, 199, .68); position: absolute; bottom: 18px; left: 34px; }
.blink-light { position: absolute; right: 30%; top: 22%; width: 22px; height: 22px; border-radius: 50%; background: var(--green); box-shadow: 0 0 28px var(--green); animation: blink 1.3s steps(2) infinite; }
.callback { grid-column: 3 / 6; grid-row: 8 / 9; width: 235px; height: 64px; font-size: 26px; transform: rotate(4deg); }
.phone-frame .frame-sentence { grid-column: 2 / 6; grid-row: 9 / 10; }

.photo-strip {
  grid-column: 9 / 12;
  grid-row: 1 / 10;
  width: min(300px, 30vw);
  justify-self: end;
  padding: 14px;
  background: var(--cream);
  box-shadow: -22px 18px 0 rgba(29, 167, 201, .28);
  transform: rotate(3deg) translateY(-5vh);
}

.snapshot { margin: 0 0 14px; color: var(--abyss); background: var(--cream); }
.snapshot span { display: block; height: clamp(130px, 20vh, 210px); background: linear-gradient(135deg, rgba(6,26,47,.8), rgba(29,167,201,.48)), radial-gradient(circle at 66% 28%, var(--coral), transparent 22%), repeating-radial-gradient(circle, rgba(241,227,199,.28) 0 2px, transparent 2px 7px); }
.snapshot:nth-child(2) span { background: linear-gradient(135deg, rgba(120,214,179,.45), rgba(6,26,47,.8)), radial-gradient(circle at 45% 40%, var(--yellow), transparent 18%), repeating-linear-gradient(90deg, transparent 0 10px, rgba(241,227,199,.12) 10px 12px); }
.snapshot:nth-child(3) span { background: radial-gradient(ellipse at center, rgba(29,167,201,.7), rgba(6,26,47,.85)), repeating-radial-gradient(ellipse, rgba(241,227,199,.2) 0 4px, transparent 4px 18px); }
.snapshot figcaption { font: 700 13px/1.5 var(--tech); letter-spacing: .12em; padding: 8px 4px 2px; }
.benday-bubble { grid-column: 2 / 7; grid-row: 3 / 6; align-self: center; padding: 38px; color: var(--abyss); font: 900 clamp(32px, 5vw, 78px)/.9 var(--display); letter-spacing: -.07em; background: radial-gradient(circle, rgba(6,26,47,.18) 0 2px, transparent 2px 11px), var(--yellow); border-radius: 50% 44% 56% 45%; box-shadow: 12px 12px 0 var(--coral); }
.booth-frame .frame-sentence { grid-column: 2 / 6; grid-row: 8 / 10; }

.ferry-photo {
  grid-column: 2 / 8;
  grid-row: 3 / 8;
  background: linear-gradient(160deg, rgba(241,227,199,.9), rgba(29,167,201,.34)), radial-gradient(circle at 70% 35%, var(--yellow), transparent 17%), var(--tide);
  border: 16px solid var(--cream);
  box-shadow: 24px 24px 0 rgba(120,214,179,.25);
  transform: rotate(-2deg);
  position: relative;
}
.rail-lines { position: absolute; inset: 48% -4% auto; height: 130px; background: repeating-linear-gradient(170deg, transparent 0 35px, rgba(6,26,47,.65) 35px 43px), linear-gradient(var(--cream), var(--cream)); opacity: .8; }
.ferry-photo .lab-mark { position: absolute; left: 24px; bottom: 18px; color: var(--abyss); }
.ferry-word { grid-column: 9 / 12; grid-row: 3 / 4; width: 170px; height: 70px; font-size: 34px; }
.ferry-frame .frame-sentence { grid-column: 8 / 11; grid-row: 8 / 10; }

.final-postcard {
  grid-column: 3 / 11;
  grid-row: 2 / 9;
  background: var(--cream);
  color: var(--abyss);
  padding: clamp(24px, 4vw, 56px);
  box-shadow: 0 0 90px rgba(120,214,179,.18), 18px 18px 0 var(--tide), 30px 30px 0 var(--coral);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}
.heart-circuit { width: 100%; filter: drop-shadow(0 0 16px rgba(120,214,179,.5)); }
.heart-path { stroke: var(--coral); stroke-width: 8; }
.inner-circuit { stroke: var(--green); stroke-width: 6; }
.final-postcard p { font: 900 clamp(28px, 5vw, 74px)/.92 var(--display); letter-spacing: -.07em; margin: 0; }
.final-postcard .lab-mark { grid-column: 1 / -1; color: rgba(6,26,47,.62); }
.last-ping { position: absolute; right: 12vw; bottom: 10vh; width: 124px; height: 64px; font-size: 30px; }

.reveal { opacity: 0; filter: blur(18px) contrast(.65); transform: translateY(30px); transition: opacity 1.4s ease, filter 1.8s ease, transform 1.4s cubic-bezier(.2,.8,.2,1); }
.reveal.in-view, .in-view > .reveal { opacity: 1; filter: blur(0) contrast(1); transform: translateY(0); }
.delay-1 { transition-delay: .24s; }
.delay-2 { transition-delay: .54s; }

@keyframes sunRise { to { transform: translateY(0); } }
@keyframes plateDrift { from { box-shadow: -18px 16px 0 rgba(247, 200, 75, .7), 0 0 70px rgba(240, 90, 79, .35); } to { box-shadow: -11px 22px 0 rgba(247, 200, 75, .62), 0 0 84px rgba(240, 90, 79, .44); } }
@keyframes drawCircuit { to { stroke-dashoffset: 0; } }
@keyframes nodeBlink { from { opacity: .45; filter: drop-shadow(0 0 0 rgba(120,214,179,0)); } to { opacity: 1; filter: drop-shadow(0 0 10px var(--green)); } }
@keyframes blink { 50% { opacity: .25; box-shadow: 0 0 0 var(--green); } }

@media (max-width: 760px) {
  .day-frame { grid-template-columns: repeat(6, 1fr); padding: 24px; }
  .frame-nav { right: 8px; }
  .wordmark { grid-column: 1 / 7; font-size: 22vw; margin-top: 0; }
  .halftone-sun { grid-column: 4 / 7; grid-row: 5 / 8; }
  .tiny-caption, .postcard, .payphone-card, .photo-strip, .ferry-photo, .final-postcard, .frame-sentence, .benday-bubble { grid-column: 1 / 6 !important; }
  .postcard, .payphone-card, .ferry-photo, .final-postcard { grid-row: 3 / 8; }
  .postcard-script { max-width: 100%; }
  .photo-strip { width: 72vw; justify-self: start; }
  .final-postcard { display: block; }
  .pop-label, .impact-tag { display: none; }
}