:root {
  --night: #080d1d;
  --night-2: #101936;
  --night-3: #17244a;
  --blue: #2869d8;
  --blue-bright: #5d93f0;
  --blue-soft: #a9c5f3;
  --ivory: #fff9ef;
  --paper: #f7efe2;
  --ink: #29242a;
  --muted: #aeb8cf;
  --line: rgba(255,255,255,.13);
  --serif: "Playfair Display", Georgia, serif;
  --sans: "DM Sans", system-ui, sans-serif;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-in-out: cubic-bezier(.65, 0, .35, 1);
}

* { box-sizing: border-box; }
html { min-width: 320px; min-height: 100%; background: var(--night); scroll-behavior: smooth; }
body {
  min-width: 320px;
  min-height: 100svh;
  margin: 0;
  overflow: hidden;
  color: var(--ivory);
  background: var(--night);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
}
body[data-view="letter"] { overflow: auto; }
button, a { color: inherit; font: inherit; }
button { border: 0; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--blue-soft); outline-offset: 5px; }
::selection { color: var(--night); background: var(--blue-soft); }

.atmosphere { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.atmosphere::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 76% 38%, rgba(41,73,143,.32), transparent 32%),
    radial-gradient(circle at 18% 78%, rgba(33,65,132,.18), transparent 33%),
    linear-gradient(145deg, #080d1d 0%, #0c1328 48%, #080c19 100%);
}
.paper-grain {
  position: absolute;
  inset: -50%;
  opacity: .055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  animation: grain .28s steps(2) infinite;
}
.blue-haze { position: absolute; border-radius: 50%; opacity: .28; filter: blur(40px); }
.haze-one { width: 28vw; height: 28vw; right: 6%; top: 12%; background: rgba(46,92,184,.28); }
.haze-two { width: 22vw; height: 22vw; left: -9%; bottom: -10%; background: rgba(26,62,132,.22); }

#petalCanvas { position: fixed; inset: 0; z-index: 45; width: 100%; height: 100%; pointer-events: none; }

.topbar {
  position: fixed;
  z-index: 40;
  top: 0;
  left: 0;
  width: 100%;
  height: 88px;
  padding: 20px clamp(20px, 4vw, 62px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}
.topbar > * { pointer-events: auto; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand-seal {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.27);
  border-radius: 50%;
  color: var(--blue-soft);
  font: 500 1.08rem var(--serif);
  transition: transform .45s var(--ease), background .3s;
}
.brand:hover .brand-seal { transform: rotate(-10deg); background: rgba(255,255,255,.06); }
.brand > span:last-child { display: flex; flex-direction: column; line-height: 1.04; }
.brand b { font: 500 1.03rem var(--serif); }
.brand small { margin-top: 4px; color: rgba(255,255,255,.42); font-size: .57rem; letter-spacing: .15em; text-transform: uppercase; }
.progress { display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.42); font-size: .59rem; letter-spacing: .13em; }
.progress > i { width: clamp(72px, 9vw, 125px); height: 1px; overflow: hidden; background: rgba(255,255,255,.17); }
.progress b { display: block; width: 33.333%; height: 100%; background: var(--blue-soft); transition: width .8s var(--ease); }
body[data-view="bouquet"] .progress b { width: 66.666%; }
body[data-view="letter"] .progress b { width: 100%; }

.experience { position: relative; z-index: 2; min-height: 100svh; }
.screen {
  position: absolute;
  inset: 0;
  min-height: 100svh;
  padding: 112px clamp(24px, 5vw, 76px) 48px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(16px) scale(.992);
  transition: opacity .48s ease, transform .72s var(--ease), visibility .48s;
}
.screen.is-active { opacity: 1; visibility: visible; pointer-events: auto; transform: none; }
.eyebrow {
  margin: 0 0 20px;
  color: var(--blue-soft);
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .17em;
  text-transform: uppercase;
}
h1, h2 { margin: 0; font-family: var(--serif); font-weight: 500; letter-spacing: -.045em; }
h1 em, h2 em { color: #8eb5f5; font-weight: 500; }
h1 { font-size: clamp(4.8rem, 8vw, 9rem); line-height: .82; }
h2 { font-size: clamp(4.1rem, 7vw, 7.7rem); line-height: .86; }

.intro-screen {
  max-width: 1540px;
  margin: auto;
  display: grid;
  grid-template-columns: minmax(390px, .84fr) minmax(500px, 1.16fr);
  align-items: center;
  gap: clamp(30px, 6vw, 95px);
}
.intro-copy { position: relative; z-index: 3; max-width: 690px; }
.intro-copy > p:last-child {
  max-width: 470px;
  margin: 29px 0 0;
  color: rgba(239,244,255,.62);
  font-size: clamp(.95rem, 1.25vw, 1.08rem);
  line-height: 1.75;
}
.gift-stage { position: relative; min-height: min(73svh, 710px); display: grid; place-items: center; perspective: 1500px; }
.gift-stage::before {
  content: "";
  position: absolute;
  width: min(42vw, 620px);
  aspect-ratio: 1;
  border: 1px solid rgba(166,193,240,.13);
  border-radius: 50%;
  box-shadow: 0 0 0 52px rgba(255,255,255,.018), 0 0 0 104px rgba(255,255,255,.01);
}
.envelope-gift {
  position: relative;
  width: min(43vw, 610px);
  aspect-ratio: 1.5;
  padding: 0;
  overflow: visible;
  background: transparent;
  cursor: pointer;
  transform: rotate(2.4deg);
  transform-style: preserve-3d;
  animation: envelope-breathe 4.2s ease-in-out infinite;
}
.envelope-gift:hover { animation-play-state: paused; transform: rotate(.6deg) translateY(-8px) scale(1.012); }
.envelope-gift:focus-visible { outline-offset: 18px; }
.gift-shadow {
  position: absolute;
  z-index: 0;
  left: 7%;
  right: 2%;
  bottom: -9%;
  height: 20%;
  border-radius: 50%;
  background: rgba(0,0,0,.58);
  filter: blur(25px);
}
.intro-bouquet {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: 13%;
  width: 74%;
  height: auto;
  max-height: 145%;
  object-fit: contain;
  transform-origin: 50% 86%;
  transform: translate(-50%, 32%) scale(.32);
  opacity: .58;
  filter: drop-shadow(0 18px 25px rgba(0,0,0,.25));
  transition: transform 1.25s .32s var(--ease), opacity .7s .25s, filter .8s;
}
.envelope-back, .envelope-front, .envelope-flap, .letter-peek { position: absolute; display: block; }
.envelope-back {
  z-index: 2;
  inset: 0;
  border: 1px solid rgba(36,44,75,.28);
  border-radius: 8px;
  background: linear-gradient(150deg, #f6efe6, #d9e0ec);
  box-shadow: inset 0 1px rgba(255,255,255,.7);
}
.letter-peek {
  z-index: 3;
  left: 7%;
  right: 7%;
  bottom: 5%;
  height: 90%;
  padding: 13% 10%;
  color: var(--ink);
  background: var(--paper);
  border-radius: 4px;
  box-shadow: 0 7px 18px rgba(0,0,0,.18);
  transition: transform 1s .25s var(--ease);
}
.letter-peek::before { content: ""; position: absolute; inset: 11px; border: 1px solid rgba(36,44,75,.11); }
.letter-peek small { display: block; color: #6e7b9b; font-size: .52rem; letter-spacing: .19em; text-transform: uppercase; }
.letter-peek strong { display: block; margin-top: 6%; color: #164a99; font: 500 clamp(2.9rem, 5.3vw, 5.8rem)/.85 var(--serif); }
.envelope-front {
  z-index: 5;
  inset: 0;
  overflow: hidden;
  border-radius: 8px;
  background:
    linear-gradient(34deg, transparent 49.7%, rgba(50,62,93,.11) 50%, transparent 50.3%),
    linear-gradient(-34deg, transparent 49.7%, rgba(50,62,93,.11) 50%, transparent 50.3%),
    linear-gradient(145deg, #f7f1e8, #dbe3ef);
  clip-path: polygon(0 9%, 50% 61%, 100% 9%, 100% 100%, 0 100%);
}
.address { position: absolute; left: 8%; bottom: 10%; color: #28344f; text-align: left; }
.address small { display: block; margin-bottom: 5px; font-size: .47rem; letter-spacing: .16em; text-transform: uppercase; }
.address strong { font: 500 clamp(1.05rem, 1.8vw, 1.55rem) var(--serif); }
.envelope-flap {
  position: absolute;
  z-index: 6;
  inset: 0;
  border-radius: 8px;
  transform-origin: 50% 0;
  transform-style: preserve-3d;
  animation: flap-hint 4.2s ease-in-out infinite;
  transition: transform .95s cubic-bezier(.34, 1.2, .64, 1), z-index 0s .45s;
  pointer-events: none;
}
.envelope-flap::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(160deg, #fff9f0, #dbe3ef);
  clip-path: polygon(0 0, 100% 0, 50% 63%);
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, .07));
  backface-visibility: visible;
}
.envelope-flap::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 8px 8px 0 0;
  background: linear-gradient(160deg, #f2ebd9, #d0dae8);
  clip-path: polygon(0 0, 100% 0, 50% 63%);
  transform: rotateY(180deg);
  backface-visibility: hidden;
}
.wax-seal {
  position: absolute;
  z-index: 8;
  left: 50%;
  top: 57%;
  width: clamp(54px, 5vw, 70px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 48% 52% 46% 54%;
  color: #cfe0ff;
  background: radial-gradient(circle at 35% 30%, #3d79dc, #174a9a 70%);
  box-shadow: 0 7px 18px rgba(0,23,72,.38), inset 0 0 0 6px rgba(255,255,255,.08);
  font: 500 1.45rem var(--serif);
  transform: translate(-50%, -50%) rotate(-7deg);
  transform-style: preserve-3d;
  backface-visibility: visible;
  transition: transform .48s var(--ease-in-out), box-shadow .35s;
}
.invitation-pulse {
  position: absolute;
  z-index: 7;
  left: 50%;
  top: 57%;
  width: 72px;
  aspect-ratio: 1;
  border: 1px solid rgba(139,181,248,.55);
  border-radius: 50%;
  transform: translate(-50%,-50%);
  animation: invite 2.2s ease-out infinite;
  pointer-events: none;
}
.envelope-gift.is-opening { animation-play-state: paused; pointer-events: none; }
.envelope-gift.is-opening .envelope-flap { z-index: 2; animation: none; transform: rotateX(180deg); }
.envelope-gift.is-opening .wax-seal { animation: wax-seal-lift .95s cubic-bezier(.34, 1.2, .64, 1) forwards; }
.envelope-gift.is-opening .invitation-pulse { opacity: 0; transition: opacity .25s ease; }
.envelope-gift.is-opening .letter-peek { transform: translateY(-48%); }
.envelope-gift.is-opening .intro-bouquet { opacity: 1; transform: translate(-50%, -24%) scale(.72); filter: drop-shadow(0 28px 32px rgba(0,0,0,.35)); }
.chapter-caption {
  position: absolute;
  left: clamp(24px,5vw,76px);
  bottom: 28px;
  margin: 0;
  color: rgba(255,255,255,.34);
  font-size: .57rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.chapter-caption span { margin-right: 10px; color: var(--blue-soft); }

.bouquet-screen {
  max-width: 1510px;
  margin: auto;
  display: grid;
  grid-template-columns: minmax(480px, 1.08fr) minmax(380px, .92fr);
  align-items: center;
  gap: clamp(30px, 6vw, 90px);
}
.bouquet-stage { position: relative; height: min(78svh, 770px); display: grid; place-items: center; }
.hero-bouquet {
  position: relative;
  z-index: 4;
  width: min(64%, 520px);
  max-height: 96%;
  object-fit: contain;
  filter: drop-shadow(0 35px 35px rgba(0,0,0,.37));
  transform-origin: 50% 78%;
}
.bouquet-screen.is-active .hero-bouquet { animation: bouquet-arrive 1.05s var(--ease) both, bouquet-life 5.8s 1.1s ease-in-out infinite; }
.bouquet-ring { position: absolute; z-index: 1; border: 1px solid rgba(149,184,244,.16); border-radius: 50%; }
.ring-one { width: min(42vw, 610px); aspect-ratio: 1; }
.ring-two { width: min(34vw, 490px); aspect-ratio: 1; border-style: dashed; animation: slow-spin 32s linear infinite; }
.bouquet-note {
  position: absolute;
  z-index: 6;
  left: 6%;
  bottom: 16%;
  width: 190px;
  padding: 21px 18px;
  color: var(--ink);
  background: #fff8ee;
  box-shadow: 0 18px 35px rgba(0,0,0,.24);
  transform: rotate(-7deg);
}
.bouquet-note::before { content: ""; position: absolute; width: 48px; height: 14px; left: 50%; top: -7px; background: rgba(128,164,229,.58); transform: translateX(-50%); }
.bouquet-note small { display: block; color: #68728b; font-size: .56rem; letter-spacing: .1em; text-transform: uppercase; }
.bouquet-note strong { display: block; margin-top: 5px; color: #164a99; font: italic 500 1.45rem var(--serif); }
.flower-label {
  position: absolute;
  z-index: 5;
  color: rgba(239,245,255,.48);
  font-size: .52rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.label-one { left: 4%; top: 20%; transform: rotate(-90deg); }
.label-two { right: 3%; bottom: 17%; }
.bouquet-copy { max-width: 590px; }
.bouquet-copy > p:not(.eyebrow) { max-width: 510px; margin: 30px 0 25px; color: rgba(239,244,255,.62); font-size: .98rem; line-height: 1.78; }
.memory-rule { max-width: 510px; margin: 0 0 33px; display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.37); font-size: .56rem; letter-spacing: .09em; text-transform: uppercase; }
.memory-rule i { flex: 1; height: 1px; background: rgba(255,255,255,.15); }
.primary-action {
  min-width: 224px;
  min-height: 54px;
  padding: 7px 7px 7px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  color: #0c1730;
  background: var(--ivory);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 16px 35px rgba(0,0,0,.22);
  transition: transform .34s var(--ease), background .3s, box-shadow .3s;
}
.primary-action:hover { transform: translateY(-3px); background: #fff; box-shadow: 0 20px 42px rgba(0,0,0,.3); }
.primary-action > span { font-size: .78rem; font-weight: 600; }
.primary-action i { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; color: var(--ivory); background: #174a9a; font-style: normal; font-size: .56rem; letter-spacing: .08em; }

.letter-screen {
  position: relative;
  inset: auto;
  max-width: 1400px;
  margin: auto;
  padding-top: 140px;
  padding-bottom: 90px;
  display: grid;
  grid-template-columns: minmax(300px,.7fr) minmax(550px,1.3fr);
  align-items: start;
  gap: clamp(45px,7vw,110px);
}
.letter-heading { position: sticky; top: 130px; padding-bottom: 30px; }
.letter-heading h2 { font-size: clamp(3.4rem,5.4vw,6rem); }
.letter-heading > p:last-child { max-width: 420px; margin: 27px 0 0; color: rgba(239,244,255,.58); line-height: 1.72; }
.letter-object { position: relative; perspective: 1500px; }
.letter-envelope-back {
  position: absolute;
  z-index: 0;
  left: -4%;
  right: -4%;
  top: 6%;
  height: 46%;
  background: #d9e2f0;
  clip-path: polygon(0 0,100% 0,50% 100%);
  transform: rotate(-1deg);
  opacity: .82;
}
.letter-paper {
  position: relative;
  z-index: 2;
  padding: clamp(42px,6vw,82px);
  overflow: hidden;
  color: var(--ink);
  background:
    linear-gradient(rgba(61,48,52,.035) 1px, transparent 1px) 0 0 / 100% 30px,
    radial-gradient(circle at 10% 6%, rgba(68,107,177,.09), transparent 28%),
    var(--paper);
  border-radius: 3px;
  box-shadow: 0 38px 90px rgba(0,0,0,.43);
  transform-origin: 50% 0;
}
.letter-screen.is-active .letter-paper { animation: unfold-paper 1s .18s var(--ease) both; }
.letter-paper::before { content: ""; position: absolute; inset: 14px; border: 1px solid rgba(45,50,66,.08); pointer-events: none; }
.paper-fold { position: absolute; left: 0; width: 100%; height: 1px; background: linear-gradient(90deg,transparent,rgba(45,50,66,.09) 12% 88%,transparent); }
.fold-top { top: 33.333%; }
.fold-bottom { top: 66.666%; }
.letter-meta { position: relative; display: flex; justify-content: space-between; gap: 20px; padding-bottom: 26px; border-bottom: 1px solid rgba(45,50,66,.13); color: #7c8090; font-size: .59rem; letter-spacing: .1em; text-transform: uppercase; }
.letter-meta strong { color: #174a9a; }
.letter-body { position: relative; max-width: 660px; margin: 0 auto; padding-top: 42px; font: 400 clamp(1.04rem,1.35vw,1.18rem)/1.86 Georgia, "Times New Roman", serif; }
.letter-body p { margin: 0 0 1.48em; }
.letter-body .salutation { margin-bottom: .7em; color: #174a9a; font: 500 clamp(2.6rem,4vw,4rem)/1 var(--serif); }
.letter-body blockquote { margin: 2.2em 0; padding: 23px 0; color: #174a9a; border-top: 1px solid rgba(23,74,154,.2); border-bottom: 1px solid rgba(23,74,154,.2); font: italic 500 clamp(1.45rem,2.6vw,2.35rem)/1.28 var(--serif); text-align: center; }
.letter-body .closing { margin-top: 2.4em; color: #174a9a; font-weight: 600; }
.signature { position: relative; max-width: 660px; margin: 44px auto 0; padding-top: 26px; display: flex; flex-direction: column; border-top: 1px solid rgba(45,50,66,.13); }
.signature span { color: #85808a; font: italic 1rem var(--serif); }
.signature strong { margin-top: 4px; color: #174a9a; font: italic 500 2rem var(--serif); }
.paper-seal { position: absolute; right: clamp(28px,5vw,64px); bottom: clamp(34px,5vw,64px); width: 52px; aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; color: #d6e4ff; background: #174a9a; font: 500 1.2rem var(--serif); transform: rotate(8deg); }
.letter-actions { grid-column: 2; display: flex; justify-content: space-between; gap: 20px; margin-top: 24px; }
.letter-actions button { padding: 9px 0; color: rgba(255,255,255,.5); border-bottom: 1px solid rgba(255,255,255,.2); background: transparent; font-size: .59rem; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; transition: color .25s,border-color .25s; }
.letter-actions button:hover { color: #fff; border-color: var(--blue-soft); }

.music-player {
  position: fixed;
  z-index: 50;
  left: clamp(14px,3vw,42px);
  bottom: max(14px,env(safe-area-inset-bottom));
  padding: 7px 13px 7px 7px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  background: rgba(7,12,27,.78);
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(0,0,0,.3);
  backdrop-filter: blur(15px);
  animation: player-in .5s var(--ease);
}
.music-player[hidden] { display: none; }
.music-player button { width: 39px; height: 39px; display: grid; place-items: center; border-radius: 11px; background: #89b0ef; cursor: pointer; }
.music-player > div { display: flex; flex-direction: column; line-height: 1.05; }
.music-player small { color: rgba(255,255,255,.45); font-size: .48rem; letter-spacing: .11em; text-transform: uppercase; }
.music-player strong { margin-top: 5px; max-width: 150px; overflow: hidden; font-size: .67rem; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
.music-bars { height: 15px; display: flex; align-items: end; gap: 2px; }
.music-bars i { width: 2px; height: 12px; border-radius: 2px; background: #0c1a36; animation: equalize .65s ease-in-out infinite alternate; }
.music-bars i:nth-child(2) { animation-delay: -.35s; height: 7px; }
.music-bars i:nth-child(3) { animation-delay: -.18s; height: 15px; }
.music-bars i:nth-child(4) { animation-delay: -.48s; height: 9px; }
.music-player.is-paused .music-bars i { animation-play-state: paused; height: 3px; }
.youtube-host { position: fixed; left: -10px; bottom: -10px; width: 1px; height: 1px; overflow: hidden; pointer-events: none; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

body.is-changing .screen.is-active { opacity: 0; transform: translateY(-10px) scale(.992); }

@keyframes grain { 0% { transform: translate(0,0); } 25% { transform: translate(1%,-1%); } 50% { transform: translate(-1%,1%); } 75% { transform: translate(1%,1%); } 100% { transform: translate(-1%,-1%); } }
@keyframes envelope-breathe { 0%,100% { transform: rotate(2.4deg) translateY(0); } 50% { transform: rotate(1.4deg) translateY(-8px); } }
@keyframes flap-hint { 0%,72%,100% { transform: rotateX(0); } 82% { transform: rotateX(9deg); } 90% { transform: rotateX(3deg); } }
@keyframes invite { 0% { opacity: .65; transform: translate(-50%,-50%) scale(.65); } 75%,100% { opacity: 0; transform: translate(-50%,-50%) scale(1.65); } }
@keyframes wax-seal-lift {
  0% { transform: translate(-50%, -50%) rotate(-7deg) scale(1); box-shadow: 0 7px 18px rgba(0,23,72,.38); }
  18% { transform: translate(-50%, -50%) rotate(-2deg) scale(1.08) translateZ(8px); box-shadow: 0 14px 28px rgba(0,23,72,.48); }
  100% { transform: translate(-50%, -50%) rotate(0deg) scale(1) translateZ(1px); box-shadow: 0 5px 12px rgba(0,23,72,.28); }
}
@keyframes bouquet-arrive { from { opacity: 0; transform: translateY(35px) scale(.82); } }
@keyframes bouquet-life { 50% { transform: translateY(-5px) rotate(.6deg); } }
@keyframes slow-spin { to { transform: rotate(360deg); } }
@keyframes unfold-paper { from { opacity: 0; transform: translateY(-25px) rotateX(18deg) scaleY(.82); } }
@keyframes player-in { from { opacity: 0; transform: translateY(18px); } }
@keyframes equalize { to { height: 3px; } }


@media (max-width: 980px) {
  body { overflow: auto; }
  .screen { position: relative; inset: auto; display: none; }
  .screen.is-active { display: grid; }
  .intro-screen,.bouquet-screen,.letter-screen { grid-template-columns: 1fr; }
  .intro-screen { padding-top: 118px; gap: 25px; }
  .intro-copy { margin: auto; text-align: center; }
  .intro-copy > p:last-child { margin-left: auto; margin-right: auto; }
  h1 { font-size: clamp(4.4rem,13vw,7.5rem); }
  .gift-stage { min-height: 500px; }
  .envelope-gift { width: min(80vw,600px); }
  .gift-stage::before { width: min(77vw,580px); }
  .chapter-caption { position: relative; left: auto; bottom: auto; margin: 0 auto; }
  .bouquet-screen { padding-top: 110px; padding-bottom: 80px; gap: 35px; }
  .bouquet-stage { height: min(69svh,680px); }
  .hero-bouquet { width: min(61%,470px); }
  .ring-one { width: min(78vw,580px); }
  .ring-two { width: min(63vw,470px); }
  .bouquet-copy { margin: auto; text-align: center; }
  .bouquet-copy > p:not(.eyebrow),.memory-rule { margin-left: auto; margin-right: auto; }
  .bouquet-note { left: 9%; }
  .letter-screen { padding-top: 118px; }
  .letter-heading { position: relative; top: auto; max-width: 760px; margin: auto; text-align: center; }
  .letter-heading > p:last-child { margin-left: auto; margin-right: auto; }
  .letter-object,.letter-actions { width: min(820px,100%); margin-left: auto; margin-right: auto; }
  .letter-actions { grid-column: 1; }
}

@media (max-width: 620px) {
  .topbar { height: 72px; padding: 15px 16px; }
  .brand > span:last-child { display: none; }
  .brand-seal { width: 38px; height: 38px; }
  .progress > i { width: 64px; }
  .screen { padding-left: 18px; padding-right: 18px; }
  .intro-screen { padding-top: 96px; gap: 8px; }
  h1 { font-size: clamp(3.75rem,18vw,5.3rem); }
  .intro-copy > p:last-child { margin-top: 21px; font-size: .9rem; line-height: 1.65; }
  .eyebrow { margin-bottom: 15px; font-size: .57rem; }
  .gift-stage { min-height: 390px; }
  .envelope-gift { width: min(92vw,500px); }
  .wax-seal { width: 49px; }
  .invitation-pulse { width: 52px; }
  .bouquet-screen { padding-top: 92px; gap: 17px; }
  .bouquet-stage { height: min(58svh,540px); }
  .hero-bouquet { width: min(70%,390px); max-height: 100%; }
  .bouquet-note { left: 1%; bottom: 13%; width: 150px; padding: 17px 14px; }
  .bouquet-note strong { font-size: 1.12rem; }
  .flower-label { font-size: .45rem; }
  .label-one { left: -5%; }
  h2 { font-size: clamp(3.45rem,16vw,5rem); }
  .bouquet-copy > p:not(.eyebrow) { margin-top: 21px; font-size: .88rem; line-height: 1.68; }
  .memory-rule { gap: 7px; font-size: .47rem; }
  .letter-screen { padding: 96px 10px 68px; gap: 28px; }
  .letter-heading { padding: 0 8px; }
  .letter-heading h2 { font-size: clamp(3.15rem,15vw,4.7rem); }
  .letter-heading > p:last-child { margin-top: 21px; font-size: .89rem; }
  .letter-paper { padding: 38px 24px 45px; }
  .letter-paper::before { inset: 8px; }
  .letter-meta { align-items: flex-start; flex-direction: column; gap: 7px; }
  .letter-body { padding-top: 33px; font-size: 1rem; line-height: 1.78; }
  .letter-body .salutation { font-size: 2.55rem; }
  .letter-body blockquote { padding: 19px 0; font-size: 1.55rem; }
  .paper-seal { right: 25px; bottom: 34px; width: 45px; }
  .letter-actions { padding: 0 8px; }
}

@media (max-height: 720px) and (min-width: 981px) {
  .topbar { height: 70px; padding-top: 12px; padding-bottom: 12px; }
  .screen { padding-top: 82px; padding-bottom: 25px; }
  h1 { font-size: clamp(4.3rem,6.7vw,6.7rem); }
  .gift-stage { min-height: 590px; transform: scale(.88); }
  .bouquet-stage { height: 620px; transform: scale(.9); }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior: auto!important; animation-duration: .01ms!important; animation-iteration-count: 1!important; transition-duration: .01ms!important; }
  .paper-grain { display: none; }
}

/* Correcciones de interacción y composición */
.intro-bouquet {
  bottom: 8%;
  transform-origin: 50% 100%;
  transform: translateX(-50%) scale(.32);
}

.envelope-gift.is-opening .intro-bouquet {
  opacity: 1;
  transform: translate(-50%, -24%) scale(.72);
  filter: drop-shadow(0 28px 32px rgba(0,0,0,.35));
}

.bouquet-stage {
  grid-column: 1;
  grid-row: 1 / span 2;
  isolation: isolate;
}

.bouquet-stage,
.bouquet-stage * {
  pointer-events: none;
  user-select: none;
}

.hero-bouquet {
  display: block;
  grid-area: 1 / 1;
  place-self: center;
}

.bouquet-copy {
  grid-column: 2;
  grid-row: 1;
  align-self: end;
  padding-bottom: 4px;
}

.bouquet-actions {
  position: relative;
  z-index: 20;
  grid-column: 2;
  grid-row: 2;
  align-self: start;
  pointer-events: auto;
}

.bouquet-actions .memory-rule {
  margin-bottom: 28px;
}

.primary-action {
  position: relative;
  z-index: 30;
  isolation: isolate;
  min-width: 258px;
  min-height: 60px;
  padding: 7px 8px 7px 25px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.78);
  color: #101a31;
  background: linear-gradient(110deg,#fffaf1 0%,#f6f1e9 62%,#ffffff 100%);
  box-shadow: 0 18px 42px rgba(0,0,0,.3), inset 0 0 0 1px rgba(21,67,145,.08);
  cursor: pointer;
  pointer-events: auto;
  touch-action: manipulation;
}

.primary-action::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(105deg,transparent 28%,rgba(255,255,255,.9) 48%,transparent 68%);
  transform: translateX(-115%);
  transition: transform .72s var(--ease);
}

.primary-action:hover::before,
.primary-action:focus-visible::before {
  transform: translateX(115%);
}

.primary-action:hover {
  transform: translateY(-3px);
  background: #fff;
  box-shadow: 0 22px 48px rgba(0,0,0,.34);
}

.primary-action:active {
  transform: translateY(0) scale(.985);
}

.primary-action:focus-visible {
  outline: 3px solid rgba(143,180,239,.75);
  outline-offset: 4px;
}

.primary-action > span {
  font-size: .79rem;
  font-weight: 600;
  letter-spacing: .015em;
}

.primary-action i {
  width: 44px;
  height: 44px;
  color: #f9f3ea;
  background: linear-gradient(145deg,#2e70d2,#123f8d);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.22), 0 7px 16px rgba(17,61,135,.24);
  font-size: 1rem;
}

@keyframes bouquet-mobile-arrive {
  from {
    opacity: 0;
    transform: translateY(28px) scale(.9);
    filter: drop-shadow(0 24px 24px rgba(0,0,0,.24)) saturate(.82);
  }
  to {
    opacity: 1;
    transform: none;
    filter: drop-shadow(0 30px 32px rgba(0,0,0,.37)) saturate(1);
  }
}

@keyframes bouquet-mobile-light {
  50% {
    filter: drop-shadow(0 34px 38px rgba(0,0,0,.42)) saturate(1.06) brightness(1.025);
  }
}

.screen h1:focus,
.screen h2:focus {
  outline: none;
}

@media (max-width: 980px) {
  .bouquet-screen.is-active {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: center;
    padding-top: 100px;
    padding-bottom: 50px;
    gap: 18px;
  }

  .bouquet-stage {
    order: 1;
    grid-column: auto;
    grid-row: auto;
    width: 100%;
    max-width: 580px;
    height: clamp(280px, 44svh, 420px);
    margin: 0 auto;
    display: grid;
    place-items: center;
    position: relative;
  }

  .hero-bouquet {
    width: auto;
    height: 100%;
    max-height: clamp(260px, 42svh, 390px);
    max-width: min(75vw, 360px);
    object-fit: contain;
    filter: drop-shadow(0 26px 32px rgba(0,0,0,.38));
  }

  .ring-one {
    width: clamp(260px, 42svh, 380px);
    aspect-ratio: 1;
  }

  .ring-two {
    width: clamp(220px, 35svh, 320px);
    aspect-ratio: 1;
  }

  .bouquet-copy {
    order: 2;
    grid-column: auto;
    grid-row: auto;
    align-self: auto;
    margin: 0 auto;
    text-align: center;
    max-width: 540px;
    padding-bottom: 0;
  }

  .bouquet-copy h2 {
    font-size: clamp(2.6rem, 7vw, 4.2rem);
    line-height: .88;
  }

  .bouquet-copy > p:not(.eyebrow) {
    max-width: 440px;
    margin: 14px auto 0;
    font-size: clamp(.88rem, 2.2vw, .98rem);
    line-height: 1.6;
  }

  .bouquet-actions {
    order: 3;
    grid-column: auto;
    grid-row: auto;
    align-self: auto;
    width: min(480px, 100%);
    margin: 4px auto 0;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .bouquet-actions .memory-rule {
    width: 100%;
    margin: 0 auto 18px;
  }
}

@media (max-width: 620px) {
  .bouquet-screen {
    min-height: 100svh;
    padding-top: 84px;
    padding-bottom: 40px;
    gap: 12px;
    justify-content: center;
  }

  .bouquet-stage {
    order: 1;
    height: clamp(230px, 38svh, 310px);
    min-height: 230px;
    width: 100%;
    display: grid;
    place-items: center;
    position: relative;
    margin: 0 auto;
  }

  .hero-bouquet {
    width: auto;
    height: 100%;
    max-height: clamp(210px, 36svh, 290px);
    max-width: min(70vw, 260px);
    object-fit: contain;
    opacity: 1;
  }

  .ring-one {
    width: clamp(220px, 36svh, 290px);
  }

  .ring-two {
    width: clamp(180px, 30svh, 240px);
  }

  .bouquet-note,
  .flower-label {
    display: none;
  }

  .bouquet-copy {
    order: 2;
    text-align: center;
    max-width: 360px;
    margin: 0 auto;
  }

  .bouquet-copy h2 {
    font-size: clamp(2.35rem, 11.5vw, 3.4rem);
    line-height: .86;
  }

  .bouquet-copy > p:not(.eyebrow) {
    max-width: 330px;
    margin: 10px auto 0;
    font-size: .84rem;
    line-height: 1.52;
  }

  .bouquet-actions {
    order: 3;
    margin-top: 6px;
    width: 100%;
  }

  .bouquet-actions .memory-rule {
    margin-bottom: 14px;
    font-size: .45rem;
    max-width: 320px;
  }

  .primary-action {
    width: min(100%, 300px);
    min-height: 52px;
    padding: 6px 6px 6px 20px;
    margin-bottom: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .envelope-gift.is-opening .wax-seal {
    transform: translate(-50%,-50%) scale(1);
  }

  .bouquet-screen.is-active .hero-bouquet {
    opacity: 1;
    transform: none;
  }
}