/* VERSE — kinetic poetry, words with physics
   Ivory paper, ink that misbehaves, gold leaf used rarely. */

@view-transition { navigation: none; }

:root {
  --ivory: #FBF8F1;
  --ivory-2: #F2ECDD;
  --ink: #17151F;
  --ink-85: rgba(23,21,31,.85);
  --ink-70: rgba(23,21,31,.68);
  --ink-60: rgba(23,21,31,.6);
  --ink-50: rgba(23,21,31,.48);
  --ink-30: rgba(23,21,31,.28);
  --ink-14: rgba(23,21,31,.13);
  --ink-08: rgba(23,21,31,.07);
  --gold: #B8963E;
  --gold-ink: #8A6B28;
  --gold-70: rgba(184,150,62,.7);
  --gold-40: rgba(184,150,62,.4);
  --gold-16: rgba(184,150,62,.16);
  --serif: "Crimson Pro", Georgia, "Times New Roman", serif;
  --sans: "Work Sans", -apple-system, "Segoe UI", sans-serif;
  --ease-out: cubic-bezier(.16,.8,.28,1);
  --ease-glide: cubic-bezier(.16,1,.3,1);
  --ease-soft: cubic-bezier(.4,0,.2,1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--serif);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

::selection { background: var(--gold-16); color: var(--ink); }

a { color: inherit; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* ---------- atmosphere: grain + paper depth ---------- */

.grain {
  position: fixed; inset: -10%;
  pointer-events: none;
  z-index: 2;
  opacity: .045;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-drift 11s steps(4) infinite;
}
@keyframes grain-drift {
  0% { transform: translate(0,0); }
  25% { transform: translate(-1%,1%); }
  50% { transform: translate(1%,-1%); }
  75% { transform: translate(-1%,-1%); }
  100% { transform: translate(0,0); }
}

body::before {
  content: "";
  position: fixed; inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(120vmax 70vmax at 50% -10%, rgba(23,21,31,.05), transparent 60%),
    radial-gradient(90vmax 60vmax at 100% 110%, rgba(184,150,62,.045), transparent 55%),
    radial-gradient(120vmax 80vmax at -10% 100%, rgba(23,21,31,.04), transparent 55%);
}

.motes { position: fixed; inset: 0; z-index: 1; pointer-events: none; overflow: hidden; }
.mote {
  position: absolute;
  bottom: -4%;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--ink);
  opacity: 0;
  animation: mote-rise linear infinite;
}
@keyframes mote-rise {
  0% { opacity: 0; transform: translate(0,0); }
  8% { opacity: .16; }
  92% { opacity: .1; }
  100% { opacity: 0; transform: translate(var(--mx,24px), -108vh); }
}
.mote:nth-child(1) { left: 6%;  --mx: 30px;  width:2px; height:2px; animation-duration: 26s; animation-delay: -2s; }
.mote:nth-child(2) { left: 14%; --mx: -22px; animation-duration: 32s; animation-delay: -9s; }
.mote:nth-child(3) { left: 23%; --mx: 18px;  width:2px; height:2px; animation-duration: 22s; animation-delay: -14s; }
.mote:nth-child(4) { left: 33%; --mx: -34px; animation-duration: 29s; animation-delay: -5s; }
.mote:nth-child(5) { left: 41%; --mx: 26px;  width:2px; height:2px; animation-duration: 35s; animation-delay: -20s; }
.mote:nth-child(6) { left: 52%; --mx: -18px; animation-duration: 24s; animation-delay: -11s; }
.mote:nth-child(7) { left: 61%; --mx: 30px;  animation-duration: 30s; animation-delay: -3s; }
.mote:nth-child(8) { left: 69%; --mx: -26px; width:2px; height:2px; animation-duration: 27s; animation-delay: -17s; }
.mote:nth-child(9) { left: 77%; --mx: 20px;  animation-duration: 33s; animation-delay: -7s; }
.mote:nth-child(10){ left: 85%; --mx: -30px; width:2px; height:2px; animation-duration: 23s; animation-delay: -23s; }
.mote:nth-child(11){ left: 91%; --mx: 16px;  animation-duration: 31s; animation-delay: -13s; }
.mote:nth-child(12){ left: 97%; --mx: -20px; width:2px; height:2px; animation-duration: 28s; animation-delay: -1s; }

/* ---------- topbar ---------- */

.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  padding: clamp(1.1rem, 2.4vw, 1.7rem) clamp(1.25rem, 4vw, 2.75rem);
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.wordmark {
  font-family: var(--sans);
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .38em;
  text-decoration: none;
  color: var(--ink-85);
}
.m-rail {
  display: flex; gap: clamp(.9rem, 2vw, 1.5rem);
  font-family: var(--serif);
}
.m-rail a {
  text-decoration: none;
  font-size: .95rem;
  color: var(--ink-50);
  position: relative;
  transition: color .5s var(--ease-soft);
}
.m-rail a i { font-style: normal; }
.m-rail a::after {
  content: "";
  position: absolute; left: 50%; bottom: -.4rem;
  width: 3px; height: 3px; border-radius: 50%;
  background: var(--gold);
  opacity: 0;
  transform: translateX(-50%) scale(.4);
  transition: opacity .4s, transform .4s;
}
.m-rail a.active { color: var(--ink); }
.m-rail a.active::after { opacity: 1; transform: translateX(-50%) scale(1); }
@media (max-width: 720px) { .m-rail { display: none; } }

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

.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  max-width: 780px;
  margin: 0 auto;
  padding: clamp(6rem, 14vh, 8rem) clamp(1.5rem, 6vw, 2.5rem) 4rem;
  position: relative;
}
.eyebrow {
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: var(--gold-ink);
  margin: 0 0 1.4rem;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.6rem, 7vw, 4.7rem);
  line-height: 1.06;
  letter-spacing: -.01em;
  margin: 0 0 1.6rem;
}
.hero h1 em {
  font-style: italic;
  font-weight: 300;
  color: var(--ink-70);
}
.lede {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  line-height: 1.7;
  color: var(--ink-70);
  max-width: 56ch;
  margin: 0 0 3.2rem;
}

.toc { list-style: none; margin: 0 0 3rem; padding: 0; border-top: 1px solid var(--ink-14); }
.toc-item {
  display: flex; align-items: center; gap: clamp(1rem, 3vw, 2rem);
  text-decoration: none; color: var(--ink);
  padding: 1.15rem .25rem;
  border-bottom: 1px solid var(--ink-14);
  transition: padding .45s var(--ease-soft);
}
.toc-item:hover, .toc-item:focus-visible { padding-left: .9rem; }
.toc-n {
  font-family: var(--serif); font-style: italic;
  font-size: 1.15rem; color: var(--gold-ink);
  width: 1.6rem; flex: none;
}
.toc-body { display: flex; flex-direction: column; gap: .25rem; }
.toc-title { font-family: var(--serif); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.toc-title em { font-style: italic; color: var(--ink-50); font-size: .88em; }
.toc-desc {
  font-family: var(--sans); font-size: .74rem; letter-spacing: .04em;
  color: var(--ink-60);
}
/* letter-preview teasers, css-only, on hover of each toc row */
.toc-title { display: inline-flex; }
.toc-gravity:hover .toc-title { animation: teaser-fall .6s var(--ease-soft); }
.toc-magnet:hover .toc-title { animation: teaser-flinch .5s var(--ease-soft); }
.toc-assembly:hover .toc-title { animation: teaser-shuffle .5s var(--ease-soft); }
.toc-erosion:hover .toc-title { animation: teaser-fade .7s var(--ease-soft); }
@keyframes teaser-fall { 0% { transform: translateY(0); } 45% { transform: translateY(5px); } 100% { transform: translateY(0); } }
@keyframes teaser-flinch { 0%,100% { transform: translateX(0); } 30% { transform: translateX(-3px); } 60% { transform: translateX(3px); } }
@keyframes teaser-shuffle { 0% { opacity: 1; transform: rotate(0); } 40% { opacity: .55; transform: rotate(-1.5deg); } 100% { opacity: 1; transform: rotate(0); } }
@keyframes teaser-fade { 0%,100% { opacity: 1; } 50% { opacity: .35; } }

.scroll-cue {
  display: inline-flex; align-items: center; gap: .6rem;
  text-decoration: none; color: var(--ink-60);
  font-family: var(--sans); font-size: .74rem; letter-spacing: .28em; text-transform: uppercase;
  width: fit-content;
}
.scroll-cue i {
  width: 1px; height: 26px; background: var(--ink-30);
  position: relative; overflow: hidden;
}
.scroll-cue i::after {
  content: ""; position: absolute; left: 0; top: -100%; width: 100%; height: 100%;
  background: var(--gold);
  animation: cue-drip 2.2s var(--ease-soft) infinite;
}
@keyframes cue-drip { 0% { top: -100%; } 60% { top: 100%; } 100% { top: 100%; } }

/* ---------- movements, shared ---------- */

.movement {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  max-width: 760px;
  margin: 0 auto;
  padding: 6rem clamp(1.5rem, 6vw, 2.5rem);
  position: relative;
}

.m-watermark {
  position: absolute;
  top: 48%;
  right: -11vw;
  transform: translateY(-50%);
  z-index: -1;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(10rem, 24vw, 21rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: transparent;
  -webkit-text-stroke: 1px var(--ink-08);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  animation: watermark-breathe 19s ease-in-out infinite;
}
@keyframes watermark-breathe {
  0%, 100% { transform: translateY(-50%) translateX(0); }
  50% { transform: translateY(calc(-50% - 12px)) translateX(-8px); }
}
@media (max-width: 980px) { .m-watermark { display: none; } }

.m-head { display: flex; align-items: baseline; gap: 1.2rem; margin-bottom: .6rem; position: relative; z-index: 1; }
.numeral {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(3.2rem, 8vw, 5.4rem);
  line-height: 1;
  color: var(--gold-16);
  -webkit-text-stroke: 1.1px var(--gold-70);
  letter-spacing: -.02em;
}
.m-title {
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--ink-60);
}
.poem-title {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  color: var(--ink-85);
  margin: 0 0 clamp(2rem, 5vw, 3rem);
}

.poem { position: relative; }
.pline {
  font-family: var(--serif);
  font-weight: 380;
  font-size: clamp(1.28rem, 2.7vw, 1.95rem);
  line-height: 1.68;
  color: var(--ink);
  margin: 0;
}

.word { display: inline-block; position: relative; }
.letter { display: inline-block; position: relative; will-change: transform, opacity, filter; }

.whisper {
  font-family: var(--sans);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--ink-60);
  margin: 2.4rem 0 0;
}

/* ---------- I. Gravity ---------- */

#m1 .poem { position: relative; min-height: 240px; padding-bottom: 3rem; }
#m1 .word {
  cursor: pointer;
  padding: .05em .06em;
  border-radius: 2px;
  transition: color .3s, background .3s;
}
#m1 .word:hover { color: var(--ink); background: var(--gold-16); }
#m1 .word:focus-visible { outline: 1px solid var(--gold); outline-offset: 2px; }
#m1 .word.away { color: var(--ink-30); }
#m1 .word.fallen { cursor: default; }
#m1 .word.fallen:hover { background: none; }

#m1 .word.sway {
  animation: hang-sway var(--sway-dur, 4s) ease-in-out infinite;
  animation-delay: var(--sway-delay, 0s);
}
@keyframes hang-sway {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(3px) rotate(.6deg); }
}

.floor {
  position: absolute; left: 0; right: 0; bottom: 2.4rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-30) 15%, var(--ink-30) 85%, transparent);
}
.floor-leaf {
  position: absolute; bottom: 3px;
  width: 7px; height: 5px;
  border-radius: 0 70% 0 70%;
  pointer-events: none;
}
.floor-leaf:nth-child(1) { left: 6%;  background: var(--gold-40); transform: rotate(-18deg); }
.floor-leaf:nth-child(2) { left: 38%; background: var(--ink-14);  transform: rotate(24deg) scale(.85); }
.floor-leaf:nth-child(3) { left: 61%; background: var(--gold-40); transform: rotate(-6deg) scale(1.1); }
.floor-leaf:nth-child(4) { left: 83%; background: var(--ink-14);  transform: rotate(40deg) scale(.75); }

.m-foot { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 1.6rem; }
.lift {
  font-family: var(--sans);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold-ink);
  border: 1px solid var(--gold-40);
  border-radius: 999px;
  padding: .55rem 1.2rem;
  transition: background .35s var(--ease-soft), color .35s, border-color .35s, transform .35s;
  white-space: nowrap;
}
.lift:hover, .lift:focus-visible { background: var(--gold); color: var(--ivory); border-color: var(--gold); transform: translateY(-2px); }
.lift:active { transform: translateY(0); }

/* ---------- II. Magnet ---------- */

#m2 .poem { animation: paper-breathe 9s ease-in-out infinite; }
@keyframes paper-breathe { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }

.magnet-ring {
  position: fixed;
  width: 148px; height: 148px;
  margin-left: -74px; margin-top: -74px;
  border-radius: 50%;
  border: 1px solid var(--gold-40);
  pointer-events: none;
  z-index: 15;
  opacity: 0;
  transition: opacity .35s var(--ease-soft);
}
.magnet-ring::before {
  content: "";
  position: absolute; inset: 44%;
  border-radius: 50%;
  background: var(--gold-40);
}
.magnet-ring.on { opacity: 1; }

/* ---------- III. Assembly ---------- */

#m3 .letter.scattered {
  animation: drift-idle 6s ease-in-out infinite;
  animation-delay: var(--drift-delay, 0s);
}
@keyframes drift-idle {
  0%, 100% { margin-top: 0; }
  50% { margin-top: -4px; }
}
#m3 .letter.settled { animation: none; }

.starfield { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.star {
  position: absolute;
  width: 2px; height: 2px;
  border-radius: 50%;
  background: var(--gold);
  opacity: .3;
  animation: star-twinkle 5.5s ease-in-out infinite;
}
.star:nth-child(1)  { top: 14%; left: 62%; animation-delay: -.4s; }
.star:nth-child(2)  { top: 22%; left: 78%; width: 3px; height: 3px; animation-delay: -2.1s; }
.star:nth-child(3)  { top: 33%; left: 88%; animation-delay: -3.6s; }
.star:nth-child(4)  { top: 46%; left: 70%; width: 3px; height: 3px; animation-delay: -1.2s; }
.star:nth-child(5)  { top: 58%; left: 92%; animation-delay: -4.4s; }
.star:nth-child(6)  { top: 68%; left: 76%; animation-delay: -.8s; }
.star:nth-child(7)  { top: 78%; left: 60%; width: 3px; height: 3px; animation-delay: -2.8s; }
.star:nth-child(8)  { top: 10%; left: 40%; animation-delay: -3.1s; }
.star:nth-child(9)  { top: 84%; left: 40%; animation-delay: -1.7s; }
@keyframes star-twinkle {
  0%, 100% { opacity: .12; transform: scale(1); }
  50% { opacity: .55; transform: scale(1.6); }
}
@media (max-width: 980px) { .starfield { display: none; } }

/* ---------- IV. Erosion ---------- */

.movement.tall { min-height: 340vh; max-width: none; padding: 0; display: block; }
.sticky-wrap {
  position: sticky; top: 0;
  height: 100vh;
  max-width: 760px; margin: 0 auto;
  display: flex; flex-direction: column; justify-content: center;
  padding: 6rem clamp(1.5rem, 6vw, 2.5rem);
}
#m4 .letter.keep { color: var(--gold); }
#m4 .word.keep-word { color: var(--gold); font-weight: 500; }
#m4 .pline { transition: opacity .5s var(--ease-soft); }

.erode-gauge {
  position: absolute; left: clamp(.6rem, 2vw, 1.2rem); top: 12%; bottom: 12%;
  width: 1px;
  background: var(--ink-14);
}
.erode-gauge i {
  position: absolute; left: -1px; top: 0; width: 3px;
  background: var(--gold);
  height: 0%;
  transition: height .1s linear;
}
@media (max-width: 900px) { .erode-gauge { display: none; } }

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

.site-foot {
  max-width: 1100px; margin: 0 auto;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 2.6rem clamp(1.5rem, 6vw, 2.5rem) 3.2rem;
  font-family: var(--sans);
  font-size: .74rem; letter-spacing: .05em;
  color: var(--ink-60);
  border-top: 1px solid var(--ink-14);
  position: relative; z-index: 3;
}
.foot-links { display: flex; gap: 1.4rem; }
.foot-links a { text-decoration: none; color: var(--ink-70); border-bottom: 1px solid var(--ink-30); transition: color .3s, border-color .3s; }
.foot-links a:hover, .foot-links a:focus-visible { color: var(--gold); border-color: var(--gold); }

/* ---------- focus ---------- */

a:focus-visible, button:focus-visible {
  outline: 1.5px solid var(--gold);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- mobile ---------- */

@media (max-width: 640px) {
  .hero { padding-top: 5.5rem; }
  .toc-item { gap: .9rem; }
  .toc-desc { display: none; }
  .movement { padding-top: 4.5rem; padding-bottom: 4.5rem; }
  .sticky-wrap { padding-top: 4.5rem; padding-bottom: 4.5rem; }
  .numeral { font-size: clamp(2.6rem, 16vw, 3.6rem); }
  .m-foot { flex-direction: row; }
  .movement.tall { min-height: 260vh; }
}

/* ---------- reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .grain, .mote, .scroll-cue i::after, #m2 .poem, #m1 .word.sway, #m3 .letter.scattered, .m-watermark, .star {
    animation: none !important;
  }
  .star { opacity: .3 !important; }
  .word, .letter { transition: none !important; }
  .toc-gravity:hover .toc-title, .toc-magnet:hover .toc-title,
  .toc-assembly:hover .toc-title, .toc-erosion:hover .toc-title { animation: none !important; }
  .erode-gauge { display: none; }
  .movement.tall { min-height: 0; }
  .sticky-wrap { position: relative; }
}