/* Wedding invitation · 朱仲轩 & 李诗茗
   Sizes use --u = 1% of the page column (max 480px), so the layout keeps the
   proportions of the original 715px-wide design on every phone. */

@font-face { font-family: "WenKai"; src: url(../assets/fonts/wenkai.woff2) format("woff2"); font-display: swap; }
@font-face { font-family: "Script"; src: url(../assets/fonts/script.woff2) format("woff2"); font-display: block; }
@font-face { font-family: "Garamond"; src: url(../assets/fonts/garamond.woff2) format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "SerifSC"; src: url(../assets/fonts/serifsc.woff2) format("woff2"); font-weight: 700; font-display: swap; }

:root {
  --u: min(1vw, 4.8px);
  --burgundy: #431718;
  --paper: #e9ddc5;
  --panel: #e7dbcf;
  --ink: #3b3024;
  --ink-red: #5a1c17;
  --cream: #eadfcf;

  --hand: "WenKai", "Kaiti SC", "STKaiti", "KaiTi", serif;
  --script: "Script", "Snell Roundhand", cursive;
  --serif: "Garamond", "Times New Roman", serif;
  --serif-sc: "SerifSC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, "PingFang SC", "Noto Sans CJK SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;

  --ease: cubic-bezier(.22, 1, .36, 1);      /* long, soft deceleration */
  --ease-io: cubic-bezier(.65, 0, .35, 1);   /* symmetric ease in-out */
  --hero-h: 140;          /* hero height in u; set from the photo's aspect ratio */
  --hero-pos: 50% 50%;    /* object-position of the couple photo */
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-text-size-adjust: 100%;
  background: radial-gradient(120% 90% at 50% 30%, #57201f, var(--burgundy) 60%, #2c0e0f) fixed var(--burgundy);
}
html.locked, html.locked body { overflow: hidden; height: 100%; }
body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--hand);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
svg { overflow: visible; }
ul { list-style: none; }
a { color: inherit; text-decoration: none; }

.page {
  position: relative;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  overflow: hidden;
  background: var(--burgundy);
  box-shadow: 0 0 60px rgba(0, 0, 0, .35);
}

/* ------------------------------------------------------------ seal (shared) */
/* Wax (a pre-rendered PNG) and its contact shadow animate separately:
   only transform/opacity change, so phones never re-run a filter per frame. */
.seal {
  position: absolute;
  z-index: 3;
  width: calc(var(--u) * 15);
  height: calc(var(--u) * 15);
  left: calc(50% - var(--u) * 7.5);
}
.seal img { position: relative; width: 100%; will-change: transform, opacity; }
.seal::before, .env-seal::before {
  content: "";
  position: absolute;
  inset: 16% 4% -8%;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(25, 5, 5, .55), rgba(25, 5, 5, 0));
}
.stamp img, .stamp::before { opacity: 0; }
.card .seal { --d: .8s; }
.lace-card .seal { --d: .9s; }
.opened .card .seal img, .lace-card.in .seal img { animation: stamp-wax 1.6s var(--d) ease-in-out both; }
.opened .card .seal::before, .lace-card.in .seal::before { animation: stamp-shadow 1.6s var(--d) ease-in-out both; }
@keyframes stamp-wax {
  0%   { opacity: 0; transform: translateY(calc(var(--u) * -6)) scale(1.3) rotate(-9deg); }
  40%  { opacity: 1; }
  68%  { transform: translateY(0) scale(.965) rotate(.8deg); }
  84%  { transform: scale(1.012) rotate(0); }
  100% { opacity: 1; transform: none; }
}
@keyframes stamp-shadow {
  0%   { opacity: 0; transform: scale(1.6); }
  68%  { opacity: 1; transform: scale(.95); }
  100% { opacity: 1; transform: none; }
}

/* ======================================================= 0 · envelope cover */
.cover {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  background: radial-gradient(120% 75% at 50% 45%, #5d2123 0%, var(--burgundy) 55%, #2a0d0e 100%);
  color: var(--cream);
  cursor: pointer;
  outline: none;
  transition: opacity 1.5s ease-in-out, transform 2s var(--ease), visibility 1.5s;
  will-change: opacity, transform;
}
.cover-frame {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: calc(var(--u) * 5);
  padding-bottom: calc(var(--u) * 6);
}
.cover-lace {
  position: absolute;
  inset: calc(var(--u) * 4.5 + env(safe-area-inset-top)) calc(var(--u) * 4.5) calc(var(--u) * 4.5 + env(safe-area-inset-bottom));
  padding: calc(var(--u) * 9);
  opacity: .92;
  pointer-events: none;
}
/* lace ring drawn by lace.js onto a canvas; band width = the element's padding */
canvas.lace { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; opacity: 0; transition: opacity 1s ease; }
canvas.lace.ready { opacity: 1; }
.cover-kicker {
  font: 500 calc(var(--u) * 2.6) / 1 var(--serif);
  letter-spacing: .42em;
  margin-right: -.42em;
  opacity: .75;
}
.cover-names {
  font-size: calc(var(--u) * 5.4);
  letter-spacing: .22em;
  margin: calc(var(--u) * -2) -.22em calc(var(--u) * 5) 0;
}
.cover-kicker, .cover-names, .cover-hint { transition: opacity 1s ease, transform 1.4s var(--ease); }
.cover-names i, .names i { font-style: normal; font-family: var(--serif); }

.envelope {
  position: relative;
  width: calc(var(--u) * 72);
  height: calc(var(--u) * 49);
  perspective: calc(var(--u) * 220);
}
.env-back, .env-pocket, .env-letter { position: absolute; border-radius: calc(var(--u) * .8); }
.env-back {
  inset: 0;
  background: linear-gradient(#cbbc9f, #d9cbb0);
  box-shadow: 0 calc(var(--u) * 3) calc(var(--u) * 8) rgba(0, 0, 0, .45);
}
.env-letter {
  z-index: 1;
  inset: calc(var(--u) * 3) calc(var(--u) * 4) calc(var(--u) * 2.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding-top: calc(var(--u) * 5);
  gap: calc(var(--u) * 1.5);
  color: var(--ink);
  background: url(../assets/img/grain.png) var(--paper);
  box-shadow: 0 0 calc(var(--u) * 1.5) rgba(60, 30, 10, .18);
  transition: transform 2s var(--ease);
  will-change: transform;
}
.env-script { font: calc(var(--u) * 10) / 1 var(--script); }
.env-date { font: 500 calc(var(--u) * 2.4) / 1 var(--serif); letter-spacing: .32em; opacity: .8; }
.env-pocket {
  z-index: 2;
  inset: 0;
  background: linear-gradient(170deg, #efe5d2, #ddcfb5);
  clip-path: polygon(0 0, 50% 54%, 100% 0, 100% 100%, 0 100%);
}
.env-pocket::before, .env-pocket::after { content: ""; position: absolute; inset: 0; }
.env-pocket::before { background: linear-gradient(90deg, rgba(120, 90, 50, .16), transparent 60%); clip-path: polygon(0 0, 50% 54%, 0 100%); }
.env-pocket::after  { background: linear-gradient(-90deg, rgba(120, 90, 50, .2), transparent 60%); clip-path: polygon(100% 0, 50% 54%, 100% 100%); }
.env-flap {
  position: absolute;
  z-index: 3;
  left: 0; top: 0;
  width: 100%;
  height: 58%;
  transform-origin: 50% 0;
  transform-style: preserve-3d;
  transition: transform 1.5s var(--ease-io);
  will-change: transform;
}
.flap-front, .flap-back {
  position: absolute;
  inset: 0;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}
.flap-front { background: linear-gradient(#f1e7d4, #d8c9ad); }
.flap-back  { background: linear-gradient(#d5c6aa, #c3b395); transform: rotateY(180deg); } /* inside face: flipped sideways so it shows tip-up once the flap swings open */
.env-seal {
  position: absolute;
  z-index: 4;
  width: calc(var(--u) * 17);
  height: calc(var(--u) * 17);
  left: calc(50% - var(--u) * 8.5);
  top: calc(58% - var(--u) * 9.5);
}
.env-seal::before { transition: opacity .9s ease; }
.env-ring { position: absolute; inset: 0; transition: opacity .6s ease; }
.env-ring::after {
  content: "";
  position: absolute;
  inset: 4%;
  border-radius: 50%;
  border: 1px solid rgba(234, 223, 207, .7);
  animation: ring 2.6s ease-out infinite;
}
@keyframes ring { from { transform: scale(1); opacity: .8; } to { transform: scale(1.7); opacity: 0; } }
.seal-half { position: absolute; inset: 0; width: 100%; will-change: transform, opacity; }
.seal-half.l { clip-path: polygon(0 0, 54.5% 0, 48.5% 28%, 56.5% 52%, 46.5% 76%, 52.5% 100%, 0 100%); } /* overlaps the right half a little so no seam shows while sealed */
.seal-half.r { clip-path: polygon(53% 0, 100% 0, 100% 100%, 51% 100%, 45% 76%, 55% 52%, 47% 28%); }
.cover-hint {
  font-size: calc(var(--u) * 3.8);
  letter-spacing: .6em;
  margin: calc(var(--u) * 4) -.6em 0 0;
}
.cover-hint span { display: inline-block; animation: breathe 2.6s ease-in-out infinite; }
@keyframes breathe { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }

/* opening sequence — main.js adds these classes on a timeline (see OPEN_STEPS) */
.cover.opening .cover-hint { opacity: 0; transform: translateY(calc(var(--u) * 2)); }
.cover.opening .cover-kicker, .cover.opening .cover-names { opacity: 0; transform: translateY(calc(var(--u) * -2)); }
.cover.opening .env-ring, .cover.opening .env-seal::before { opacity: 0; }
.cover.opening .env-seal { animation: press .5s ease-in-out both; }
.cover.opening .seal-half.l { animation: crack-l 1.5s .35s ease-in-out both; }
.cover.opening .seal-half.r { animation: crack-r 1.5s .35s ease-in-out both; }
@keyframes press { 45% { transform: scale(.93); } 100% { transform: none; } }
@keyframes crack-l {
  0%   { transform: none; opacity: 1; }
  22%  { transform: translate(calc(var(--u) * -.7), 0) rotate(-4deg); opacity: 1; }
  100% { transform: translate(calc(var(--u) * -10), calc(var(--u) * 9)) rotate(-30deg); opacity: 0; }
}
@keyframes crack-r {
  0%   { transform: none; opacity: 1; }
  22%  { transform: translate(calc(var(--u) * .7), 0) rotate(4deg); opacity: 1; }
  100% { transform: translate(calc(var(--u) * 10), calc(var(--u) * 9)) rotate(30deg); opacity: 0; }
}
.cover.flap-open .env-flap { transform: rotateX(180deg); }
.cover.flap-behind .env-flap { z-index: 0; }   /* swapped when the flap is edge-on, so it never "pops" */
.cover.letter-out .env-letter { transform: translateY(calc(var(--u) * -34)); }
.cover.done { opacity: 0; visibility: hidden; transform: scale(1.05); pointer-events: none; }

/* ============================================================== 1 · hero */
.hero {
  position: relative;
  height: calc(var(--u) * var(--hero-h));
  overflow: hidden;
}
.hero-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: var(--hero-pos);
  transform: scale(1.02);
  transform-origin: 50% 40%;
}
.opened .hero-photo img { animation: kenburns 28s ease-in-out infinite alternate; }
@keyframes kenburns { from { transform: scale(1.02); } to { transform: scale(1.1) translateY(-1.2%); } }
.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: calc(var(--u) * 16);
  background: linear-gradient(transparent, rgba(40, 14, 14, .28));
  pointer-events: none;
}

.card {
  position: absolute;
  z-index: 2;
  left: calc(50% - var(--u) * 35);
  top: calc(var(--u) * 23);
  width: calc(var(--u) * 70);
  height: calc(var(--u) * 97);
  text-align: center;
  color: var(--ink);
  background:
    linear-gradient(160deg, rgba(255, 255, 255, .22), transparent 45%, rgba(90, 60, 30, .06)),
    url(../assets/img/grain.png) var(--paper);
  box-shadow: 0 calc(var(--u) * 1.6) calc(var(--u) * 5) rgba(40, 20, 10, .35);
  will-change: transform, opacity;
}
.card > * { position: absolute; left: 0; right: 0; }
.card .seal { top: calc(var(--u) * -7.5); left: calc(50% - var(--u) * 7.5); right: auto; }
.kicker {
  top: calc(var(--u) * 11);
  font: 500 calc(var(--u) * 2.5) / 1 var(--serif);
  letter-spacing: .3em;
  color: #6d5d49;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .9em;
}
.kicker::before, .kicker::after { content: ""; width: 1.4em; height: 1px; background: currentColor; opacity: .6; }
.card-title {
  top: calc(var(--u) * 16.2);
  font-weight: 400;
  font-size: calc(var(--u) * 4.6);
  line-height: 1.2;
  letter-spacing: .14em;
  text-indent: .14em;
}
.doily-wrap { top: calc(var(--u) * 19); left: calc(var(--u) * 2); right: auto; width: calc(var(--u) * 66); height: calc(var(--u) * 66); will-change: transform, opacity; }
.doily { width: 100%; height: 100%; opacity: .62; will-change: transform; }
.opened .doily { animation: spin 150s 1.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.script-names { top: 0; bottom: 0; font: calc(var(--u) * 16) / 1 var(--script); color: #2f271e; pointer-events: none; }
.w { position: absolute; white-space: nowrap; }
.w1 { left: calc(var(--u) * 17); top: calc(var(--u) * 29); }
.w2 { left: calc(var(--u) * 32); top: calc(var(--u) * 40); font-size: .72em; }
.w3 { left: calc(var(--u) * 27); top: calc(var(--u) * 48.5); }

.names {
  top: calc(var(--u) * 76);
  font-size: calc(var(--u) * 3.1);
  letter-spacing: .36em;
  text-indent: .36em;
}
.welcome {
  top: calc(var(--u) * 85.5);
  font-size: calc(var(--u) * 4.1);
  letter-spacing: .3em;
  text-indent: .3em;
}

/* hero entrance, started when <body> gets .opened (overlaps the cover's fade-out).
   Only opacity/transform are animated, so every step runs on the GPU. */
.anim { opacity: 0; }
.opened .card        { animation: rise 1.9s var(--ease) both; }
.opened .kicker      { animation: fadeUp 1.6s 1.3s var(--ease) both; }
.opened .card-title  { animation: fadeUp 1.7s 1.6s var(--ease) both; }
.opened .doily-wrap  { animation: bloom 3.4s 1.7s var(--ease) both; }
.opened .w           { animation: write 1.6s cubic-bezier(.45, .05, .55, .95) both; }
.opened .w1          { animation-delay: 2.7s; }
.opened .w2          { animation-delay: 3.8s; animation-duration: .9s; }
.opened .w3          { animation-delay: 4.3s; animation-duration: 1.8s; }
.opened .names       { animation: fadeUp 1.8s 5.3s var(--ease) both; }
.opened .welcome     { animation: fadeUp 1.8s 5.9s var(--ease) both; }

@keyframes rise   { from { opacity: 0; transform: translateY(calc(var(--u) * 10)) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(calc(var(--u) * 3)); } to { opacity: 1; transform: none; } }
@keyframes bloom  { from { opacity: 0; transform: scale(.88) rotate(-24deg); } to { opacity: 1; transform: none; } }
/* "handwriting": a soft-edged mask sweeps left → right */
@keyframes write {
  from { opacity: 1; -webkit-mask-position: 100% 0; mask-position: 100% 0; }
  to   { opacity: 1; -webkit-mask-position: 0 0; mask-position: 0 0; }
}
.w {
  -webkit-mask-image: linear-gradient(90deg, #000 42%, transparent 58%);
  mask-image: linear-gradient(90deg, #000 42%, transparent 58%);
  -webkit-mask-size: 260% 100%;
  mask-size: 260% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  /* the mask only covers the element's box: pad it so script flourishes and the
     descender of the "g" aren't clipped, and pull it back so the text doesn't move */
  padding: .3em .25em .6em;
  margin: -.3em 0 0 -.25em;
}

/* =========================================================== 2 · details */
.details {
  position: relative;
  padding: calc(var(--u) * 13) calc(var(--u) * 6) calc(var(--u) * 12);
}
.lace-card {
  position: relative;
  padding: calc(var(--u) * 13);
  background: var(--panel);
}
.lace-card .seal { top: calc(var(--u) * -4.5); }
.panel {
  padding: calc(var(--u) * 9) calc(var(--u) * 3) calc(var(--u) * 8);
  text-align: center;
  color: #3a2620;
}
.hand {
  font-weight: 400;
  font-size: calc(var(--u) * 4.4);
  letter-spacing: .14em;
  text-indent: .14em;
}
.date {
  margin-top: calc(var(--u) * 2.4);
  font: 700 calc(var(--u) * 3.3) / 1.3 var(--serif-sc);
  color: #3a1a12;
  letter-spacing: .02em;
}

.countdown { margin: calc(var(--u) * 4.5) auto 0; color: var(--ink-red); }
.cd-label { font-size: calc(var(--u) * 2.8); letter-spacing: .3em; text-indent: .3em; color: #7b5a4c; }
.cd-cells { display: flex; justify-content: center; margin-top: calc(var(--u) * 1.6); }
.cd-cells span {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: calc(var(--u) * 12);
  font-size: calc(var(--u) * 2.6);
  color: #7b5a4c;
}
.cd-cells span + span { border-left: 1px solid rgba(90, 28, 23, .18); }
.cd-cells b {
  font: 600 calc(var(--u) * 6) / 1.05 var(--serif);
  color: var(--ink-red);
  font-variant-numeric: tabular-nums lining-nums;
}
.cd-done { font-size: calc(var(--u) * 4.2); letter-spacing: .12em; color: var(--ink-red); }
.countdown.ended .cd-label, .countdown.ended .cd-cells { display: none; }

.schedule { margin-top: calc(var(--u) * 5); display: inline-grid; gap: calc(var(--u) * 1.2); }
.schedule li { display: flex; align-items: baseline; gap: calc(var(--u) * 3.5); color: var(--ink-red); }
.schedule time { font: 500 calc(var(--u) * 4.6) / 1.2 var(--serif); letter-spacing: .02em; }
.schedule span { font: 700 calc(var(--u) * 3.8) / 1.2 var(--sans); letter-spacing: .06em; }

.divider {
  position: relative;
  width: calc(var(--u) * 46);
  height: calc(var(--u) * 3);
  margin: calc(var(--u) * 6) auto calc(var(--u) * 6.5);
  background: radial-gradient(circle, #5a1c17 calc(var(--u) * .32), transparent calc(var(--u) * .42)) 0 50% / calc(var(--u) * 1.9) 100% repeat-x;
}
.heart {
  position: absolute;
  left: calc(50% - var(--u) * 2.2);
  top: 0;
  width: calc(var(--u) * 4.4);
  height: 100%;
  padding: 0 calc(var(--u) * .6);
  background: var(--panel);
  fill: #5a1c17;
  animation: beat 1.8s ease-in-out infinite;
}
@keyframes beat { 0%, 60%, 100% { transform: scale(1); } 15% { transform: scale(1.22); } 30% { transform: scale(1); } 45% { transform: scale(1.12); } }

.venue {
  margin-top: calc(var(--u) * 3.2);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: calc(var(--u) * 2.6);
}
.pin { flex: none; width: calc(var(--u) * 5.85); fill: var(--ink-red); animation: bob 2.6s ease-in-out infinite; }
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(calc(var(--u) * -1)); } }
.venue-name { font: 700 calc(var(--u) * 3.9) / 1.45 var(--sans); color: var(--ink-red); letter-spacing: .05em; }
.address { margin-top: calc(var(--u) * 2.6); font-size: calc(var(--u) * 3); letter-spacing: .12em; color: #4a3a30; }

.maps { margin-top: calc(var(--u) * 4.5); display: flex; justify-content: center; gap: calc(var(--u) * 3); }
.map-btn {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--u) * 1);
  padding: calc(var(--u) * 1.7) calc(var(--u) * 3.6);
  border: 1px solid rgba(90, 28, 23, .45);
  border-radius: 999px;
  background: rgba(255, 255, 255, .35);
  font: 600 max(12px, calc(var(--u) * 3)) / 1 var(--sans);
  color: var(--ink-red);
  letter-spacing: .06em;
  transition: transform .15s, background-color .15s;
}
.map-btn svg { width: 1.05em; fill: currentColor; }
.map-btn:active { transform: scale(.96); background: rgba(90, 28, 23, .1); }

.closing {
  margin-top: calc(var(--u) * 7.5);
  font-size: calc(var(--u) * 6.6);
  letter-spacing: .2em;
  text-indent: .2em;
  color: #3b2420;
}

.footer {
  padding: 0 0 calc(var(--u) * 14 + env(safe-area-inset-bottom));
  text-align: center;
  color: var(--cream);
  opacity: .7;
}
.footer-script { font: calc(var(--u) * 9) / 1 var(--script); }
.footer-date { margin-top: calc(var(--u) * 2); font: 500 calc(var(--u) * 2.4) / 1 var(--serif); letter-spacing: .4em; text-indent: .4em; }

/* scroll reveal (main.js adds .in, --d staggers) */
[data-reveal] {
  opacity: 0;
  transform: translateY(calc(var(--u) * 5));
  transition: opacity 1.4s ease-in-out var(--d, 0s), transform 1.8s var(--ease) var(--d, 0s);
}
[data-reveal].in { opacity: 1; transform: none; }
.lace-card[data-reveal] { transform: translateY(calc(var(--u) * 12)); transition-duration: 1.6s, 2.2s; }
.lace-card[data-reveal].in { transform: none; }
.closing[data-reveal] { transform: translateY(calc(var(--u) * 3)) scale(.94); transition-duration: 1.8s, 2.4s; }
.closing[data-reveal].in { transform: none; }

/* ======================================================= floating chrome */
.music {
  position: fixed;
  z-index: 40;
  top: calc(env(safe-area-inset-top) + 14px);
  right: max(14px, calc((100vw - 480px) / 2 + 14px));
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid rgba(234, 223, 207, .65);
  background: rgba(67, 23, 24, .55);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  color: var(--cream);
  cursor: pointer;
  opacity: 0;
  transition: opacity 1.2s ease 1s;
}
.opened .music { opacity: 1; }
.music svg { width: 20px; fill: currentColor; }
.music.playing svg { animation: spin 3.6s linear infinite; }
.music::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 1.5px;
  background: currentColor;
  transform: rotate(-45deg);
  transition: opacity .2s;
}
.music.playing::after { opacity: 0; }
.music[hidden] { display: none; }

.scroll-hint {
  position: fixed;
  z-index: 35;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 14px);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--cream);
  font-size: 12px;
  letter-spacing: .3em;
  text-indent: .3em;
  opacity: 0;
  pointer-events: none;
  transition: opacity .6s;
  text-shadow: 0 1px 3px rgba(0, 0, 0, .4);
}
.scroll-hint svg { width: 22px; animation: nudge 1.8s ease-in-out infinite; }
.opened .scroll-hint { opacity: .9; transition: opacity 1.2s ease 7.5s; }
.opened .scroll-hint.gone { opacity: 0; transition: opacity .6s ease; }
@keyframes nudge { 0%, 100% { transform: translateY(0); opacity: .5; } 50% { transform: translateY(5px); opacity: 1; } }

#fx { position: fixed; inset: 0; z-index: 30; width: 100%; height: 100%; pointer-events: none; }

/* ======================================================== reduced motion */
/* The OS "reduce motion" setting (also on by default on some Windows PCs):
   keep the one-time entrance fades, which are the point of the invitation,
   and drop the ambient loops (photo zoom, spinning doily, petals, pulses). */
@media (prefers-reduced-motion: reduce) {
  .opened .doily, .opened .hero-photo img, .music.playing svg,
  .heart, .pin, .env-ring::after, .scroll-hint svg { animation: none !important; }
  #fx { display: none; }
}