:root {
  --bg: #FFF5F7; --paper: #fffaf8; --card: #FFD6E0; --accent: #FF8FAB;
  --button: #C9184A; --ink: #4A2C3A; --muted: #785360; --peach: #FFCDB2; --lavender: #E0C3FC;
  --line: #e9bdca; --white: #fff; --space-1: .25rem; --space-2: .5rem; --space-3: .75rem;
  --space-4: 1rem; --space-5: 1.5rem; --space-6: 2rem; --space-7: 3rem; --space-8: 4rem;
  --text-sm: .75rem; --text-md: .875rem; --text-body: 1rem; --text-lg: 1.25rem;
  --display: clamp(2.7rem, 6vw, 4.5rem); --radius: .75rem; --pill: 100rem;
  --fast: 150ms; --duration: 350ms; --entrance: 650ms; --ease: cubic-bezier(.22,1,.36,1);
  --shadow: 0 8px 16px #c9184a0d, 0 24px 48px #c9184a10;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--space-8); }
body { margin: 0; background: var(--bg); color: var(--ink); font: var(--text-body)/1.7 'Mali', sans-serif; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
button { cursor: pointer; color: inherit; }
button:disabled { cursor: default; }
button, a { transition: transform var(--fast) var(--ease), background var(--fast), box-shadow var(--fast); }
button:hover:not(:disabled), a:hover { transform: translateY(-2px); }
button:active:not(:disabled) { transform: translateY(2px); }
:focus-visible { outline: 3px solid var(--button); outline-offset: 5px; }
h1, h2, p { margin: 0; }
h1, h2, .handwritten, .signature { font-family: 'Dancing Script', cursive; font-weight: 600; }
h1, h2 { font-size: var(--display); line-height: 1.2; text-wrap: balance; }
h2:focus { outline: none; }
p { text-wrap: pretty; }
[hidden] { display: none !important; }
.masthead, .story-footer { position: fixed; left: 0; right: 0; display: flex; align-items: center; justify-content: space-between; z-index: 5; padding-inline: max(var(--space-5), env(safe-area-inset-left)); }
.masthead { top: 0; min-height: 72px; padding-top: env(safe-area-inset-top); background: var(--bg); border-bottom: 1px solid var(--line); }
.wordmark { min-width: 60px; min-height: 44px; display: flex; align-items: center; gap: var(--space-2); font-family: 'Dancing Script', cursive; font-size: 1.5rem; text-decoration: none; color: var(--ink); }
.date { font-size: var(--text-sm); letter-spacing: .12em; }
.music-toggle { border: 1px solid var(--line); border-radius: var(--pill); min-height: 44px; padding: var(--space-2) var(--space-3); background: var(--paper); font-size: var(--text-sm); }
.story-footer { bottom: 0; min-height: 48px; padding-bottom: env(safe-area-inset-bottom); font-size: var(--text-sm); background: var(--bg); border-top: 1px solid var(--line); color: var(--muted); }
#step-counter { font-variant-numeric: tabular-nums; letter-spacing: .1em; }
.step { position: relative; min-height: 100svh; display: grid; place-items: center; padding: calc(72px + var(--space-7)) var(--space-5) calc(48px + var(--space-7)); overflow: clip; }
.section-inner { position: relative; z-index: 1; width: 100%; max-width: 560px; text-align: center; display: flex; align-items: center; flex-direction: column; gap: var(--space-5); }
.eyebrow { font-size: var(--text-sm); font-weight: 600; letter-spacing: .12em; color: var(--muted); }
.intro, .photo-caption { max-width: 38ch; line-height: 1.8; }
.small-note { color: var(--muted); font-size: var(--text-sm); }
.opening { background: radial-gradient(ellipse at center, var(--card) 0, var(--bg) 65%); }
.opening .section-inner { gap: var(--space-5); }
.title-heart { display: block; color: var(--button); font: 2rem/1.3 'Mali', sans-serif; margin-top: var(--space-2); }
.envelope-button { display: grid; justify-items: center; gap: var(--space-6); padding: var(--space-5) 0; border: 0; background: transparent; width: min(100%, 320px); }
.envelope-art { display: block; position: relative; width: 280px; height: 174px; perspective: 800px; filter: drop-shadow(0 16px 16px #c9184a18); }
.envelope-body { position: absolute; inset: 0; background: var(--accent); border-radius: var(--space-2); }
.envelope-body::after { content: ''; position: absolute; inset: 0; background: var(--card); clip-path: polygon(0 0,50% 55%,100% 0,100% 100%,0 100%); }
.envelope-flap { position: absolute; inset: 0; background: #efb3c5; clip-path: polygon(0 0,100% 0,50% 57%); transform-origin: top; transition: transform var(--entrance) var(--ease), opacity var(--duration); }
.letter-peek { position: absolute; inset: var(--space-3) var(--space-5); background: var(--paper); padding: var(--space-5); font: 1.5rem 'Dancing Script', cursive; transition: transform var(--entrance) var(--ease); }
.seal { position: absolute; left: calc(50% - 23px); top: 72px; display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; background: var(--button); color: var(--white); box-shadow: 0 3px 0 #a0133b; transition: opacity var(--duration); }
.envelope-button.opened .envelope-flap { transform: rotateX(180deg); opacity: 0; }
.envelope-button.opened .letter-peek { transform: translateY(-32px); }
.envelope-button.opened .seal { opacity: 0; }
.envelope-label { display: flex; gap: var(--space-5); align-items: center; font-weight: 600; color: var(--button); }
.primary { min-height: 48px; border: 0; border-radius: var(--pill); background: var(--button); color: var(--white); padding: var(--space-3) var(--space-5); display: inline-flex; gap: var(--space-5); align-items: center; justify-content: center; font-size: var(--text-md); font-weight: 600; }
.primary:disabled { background: var(--card); color: var(--muted); }
.text-button { min-height: 44px; border: 0; background: transparent; color: var(--button); font-size: var(--text-md); text-decoration: underline; text-underline-offset: 5px; padding: var(--space-2) var(--space-4); }
.letter-paper { position: relative; text-align: left; width: 100%; padding: var(--space-6); background: var(--paper); box-shadow: var(--shadow); transform: rotate(-1deg); }
#letter-copy { white-space: pre-wrap; font-size: var(--text-md); line-height: 1.9; }
.paper-heart { float: right; color: var(--button); font-size: 2rem; line-height: 1; margin-left: var(--space-3); }
.signature { display: block; text-align: right; color: var(--button); font-size: var(--text-lg); margin-top: var(--space-5); }
.letter-char.pending { opacity: 0; }
.photo-heart { width: min(100%, 320px); display: block; border: 0; padding: 0; background: transparent; }
.photo-heart svg { width: 100%; height: auto; display: block; }
.heart-outline { stroke: var(--button); stroke-width: 2; fill: none; }
.photo-step { background: linear-gradient(155deg,var(--bg),#ffe5ec); }
.reason-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-3); width: 100%; }
.reason-card { position: relative; display: grid; min-height: 150px; padding: 0; border: 0; background: transparent; perspective: 800px; }
.card-front, .card-back { grid-area: 1 / 1; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: var(--space-2); border-radius: var(--radius); padding: var(--space-4); backface-visibility: hidden; transition: transform var(--entrance) var(--ease); }
.card-front { background: var(--card); font-size: var(--text-sm); }
.card-front b { font: 2.3rem 'Dancing Script', cursive; color: var(--button); }
.card-back { background: var(--paper); font-size: var(--text-md); line-height: 1.6; transform: rotateY(-180deg); }
.reason-card[aria-pressed="true"] .card-front { transform: rotateY(180deg); }
.reason-card[aria-pressed="true"] .card-back { transform: rotateY(0); }
.bouquet { width: min(100%,340px); height: auto; }
.bouquet-note { display: block; margin-top: calc(-1 * var(--space-5)); }
.handwritten { font-size: 1.7rem; color: var(--button); }
.finale-step { background: radial-gradient(ellipse at top,#ffe5ec,var(--bg) 70%); }
.finale-heart { font-size: 3rem; color: var(--button); line-height: 1; }
.finale-date { display: block; font-size: clamp(4rem,12vw,6rem); margin-top: var(--space-3); }
.closing-note { font-size: var(--text-sm); color: var(--muted); max-width: 35ch; }
@keyframes heartbeat { 50% { transform: scale(1.035); } }
@keyframes bloom { from { transform: scale(.05) rotate(-18deg); opacity: .2; } to { transform: scale(1) rotate(0); opacity: 1; } }
@keyframes grow { from { stroke-dashoffset: 260; } to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: no-preference) {
  .photo-step.in-view .photo-heart { animation: heartbeat 2.8s ease-in-out infinite; }
  .bouquet-step.in-view .rose { transform-box: fill-box; transform-origin: center; animation: bloom var(--entrance) var(--ease) both; }
  .rose-2 { animation-delay: 80ms !important; } .rose-3 { animation-delay: 160ms !important; } .rose-4 { animation-delay: 240ms !important; } .rose-5 { animation-delay: 320ms !important; }
  .bouquet-step.in-view .stems { stroke-dasharray: 260; animation: grow var(--entrance) var(--ease) both; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .letter-char.pending { opacity: 1; }
}
@media (min-width: 768px) {
  .masthead, .story-footer { padding-inline: var(--space-7); }
  .opening .section-inner { max-width: 640px; }
  .envelope-art { width: 320px; height: 200px; }
  .seal { top: 88px; }
  .reason-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .reason-card { min-height: 185px; }
}
@media (max-height: 750px) { .opening .section-inner { gap: var(--space-4); } }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

button { scroll-margin-block: 96px 72px; }

[data-copy] { white-space: pre-line; }

.gift-button { display: grid; justify-items: center; gap: var(--space-5); width: min(100%, 300px); padding: var(--space-5) 0; background: transparent; border: 0; }
.gift-art { position: relative; display: block; width: 200px; height: 190px; }
.gift-base { position: absolute; left: 20px; right: 20px; top: 60px; bottom: 0; display: grid; place-items: center; border-radius: 0 0 var(--radius) var(--radius); background: var(--card); box-shadow: var(--shadow); }
.gift-base::before, .gift-lid::after { content: ''; position: absolute; top: 0; bottom: 0; left: calc(50% - 12px); width: 24px; background: var(--button); }
.gift-lid { position: absolute; z-index: 2; left: 12px; right: 12px; top: 44px; height: 32px; border-radius: var(--space-2); background: var(--accent); transition: transform var(--entrance) var(--ease); }
.gift-bow { position: absolute; z-index: 3; left: calc(50% - 40px); top: 12px; width: 80px; height: 36px; transition: transform var(--entrance) var(--ease); }
.gift-bow::before, .gift-bow::after { content: ''; position: absolute; top: 0; width: 40px; height: 30px; border: 7px solid var(--button); }
.gift-bow::before { left: 0; border-radius: 24px 24px 0 24px; transform: rotate(12deg); }
.gift-bow::after { right: 0; border-radius: 24px 24px 24px 0; transform: rotate(-12deg); }
.gift-question { z-index: 1; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 50%; background: var(--paper); color: var(--button); font-size: 2rem; font-weight: 600; }
.gift-spark { position: absolute; top: 56px; left: calc(50% - 16px); color: var(--button); font-size: 2rem; opacity: 0; transition: transform var(--entrance) var(--ease), opacity var(--duration); }
.gift-button-label { color: var(--button); font-size: var(--text-md); font-weight: 600; }
.gift-button.opened .gift-lid, .gift-button.opened .gift-bow { transform: translate(-20px, -32px) rotate(-12deg); }
.gift-button.opened .gift-spark { transform: translateY(-64px); opacity: 1; }
.gift-promise { display: grid; gap: var(--space-4); padding: var(--space-5); width: 100%; border-radius: var(--radius); background: var(--paper); text-align: left; }
.gift-promise h3 { margin: 0; font-size: var(--text-lg); color: var(--button); line-height: 1.5; }
.gift-promise p { font-size: var(--text-md); }