/* A little birthday gift: ribbon, gingham, paper, and a lot of love. */
:root {
  color-scheme: light;
  --paper: #fbf1ee;
  --letter-paper: #fffdf8;
  --ink: #4d3439;
  --muted: #83656b;
  --accent: #832f46;
  --accent-dark: #622239;
  --accent-soft: #ddb1bc;
  --line: #e8ced1;
  --masthead-height: 72px;
  --footer-height: 56px;
  --serif: "Iowan Old Style", "Baskerville", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --hand: "Snell Roundhand", "Apple Chancery", "URW Chancery L", "Brush Script MT", "Segoe Print", cursive;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --chinese: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "PingFang SC", "Microsoft YaHei", serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body {
  margin: 0;
  color: var(--ink);
  background-color: var(--paper);
  background-image: linear-gradient(90deg, #eac4ca26 50%, transparent 50%), linear-gradient(#eac4ca26 50%, transparent 50%);
  background-size: 28px 28px;
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
[hidden] { display: none !important; }
::selection { background: #efd0d8; color: #622239; }
a { color: inherit; text-underline-offset: 5px; }
a, button, video { -webkit-tap-highlight-color: #832f4618; }
a:focus-visible, button:focus-visible, video:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
button { font: inherit; }
h1, h2, p { margin: 0; }
h1, h2 { font-family: var(--serif); font-weight: 400; }
svg { width: 20px; height: 20px; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.section-width { width: min(100% - 40px, 880px); margin-inline: auto; }
.eyebrow { color: var(--muted); font-family: var(--chinese); font-size: 13px; line-height: 1.7; letter-spacing: .07em; }
.handwritten { font-family: var(--hand); font-size: 23px; letter-spacing: 0; color: var(--accent); }
.skip-link { position: fixed; left: 16px; top: 12px; z-index: 20; padding: 12px 18px; border-radius: 12px; background: var(--letter-paper); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.masthead { width: calc(100% - 40px); max-width: 1160px; margin: 0 auto; min-height: var(--masthead-height); padding-top: env(safe-area-inset-top, 0px); display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.wordmark { font-family: var(--hand); font-size: 22px; line-height: 1.3; text-decoration: none; color: var(--accent); }
.wordmark span { font-family: var(--serif); display: inline-block; margin-right: 3px; font-size: 24px; vertical-align: -2px; }
.masthead-note { color: var(--muted); font-family: var(--chinese); font-size: 11px; letter-spacing: .025em; text-align: right; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; width: calc(100% - 40px); max-width: 1160px; min-height: var(--footer-height); margin: 0 auto; padding: 14px 0 max(14px, env(safe-area-inset-bottom)); color: var(--muted); font-family: var(--hand); font-size: 16px; line-height: 1.6; }
.primary-button { display: inline-flex; justify-content: center; align-items: center; gap: 17px; min-height: 50px; padding: 12px 24px; border: 1px solid var(--accent); border-radius: 999px; background: var(--accent); color: var(--letter-paper); box-shadow: 0 4px 0 #67293a18, inset 0 0 0 3px #f5c8d015; text-decoration: none; font-size: 14px; line-height: 1.6; letter-spacing: .03em; transition: background-color 180ms, transform 180ms; }
.primary-button:hover { background: var(--accent-dark); transform: translateY(-2px); }
.primary-button svg { width: 18px; height: 18px; flex-shrink: 0; }
.paper-tape { position: absolute; display: block; z-index: 3; width: 104px; height: 26px; background-color: #e6b1be; background-image: linear-gradient(90deg, #fff6ed55 50%, transparent 50%), linear-gradient(#fff6ed55 50%, transparent 50%); background-size: 12px 12px; opacity: .84; clip-path: polygon(2% 0, 98% 0, 100% 16%, 98% 30%, 100% 52%, 98% 68%, 100% 86%, 98% 100%, 1% 100%, 3% 83%, 0 68%, 2% 49%, 0 30%, 3% 16%); pointer-events: none; }

/* The first page is a birthday card, held down with pink paper tape. */
.opening { min-height: calc(100svh - var(--masthead-height) - var(--footer-height)); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 28px 25px 20px; }
.opening-inner { position: relative; width: min(100%, 650px); margin-block: auto; padding: 27px 22px 58px; border: 1px solid #ead7cb; border-radius: 18px 22px 17px 24px; background-color: var(--letter-paper); background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='paper'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%238b5d67' opacity='.025' filter='url(%23paper)' d='M0 0h180v180H0z'/%3E%3C/svg%3E"); box-shadow: 6px 7px 0 -1px #efd8d6, 6px 7px 0 0 #e8cace, 0 12px 28px #7535450a; transform: rotate(-.7deg); }
.opening-inner::after { content: ""; position: absolute; inset: 9px; border: 1px dashed #e9cbd0; border-radius: 12px 16px 11px 18px; pointer-events: none; }
.tape-left { top: -10px; left: -17px; transform: rotate(-28deg); }
.tape-right { top: -10px; right: -17px; transform: rotate(28deg); }
.birthday-bow { display: block; width: 96px; height: auto; margin: 0 auto 6px; }
.opening-eyebrow { margin-bottom: 19px; font-size: 14px; color: var(--accent); }
.opening h1 { font-size: clamp(37px, 6.3vw, 64px); line-height: 1.12; letter-spacing: -.04em; }
.opening h1 em { display: inline-block; color: var(--accent); font-family: var(--hand); font-size: 1.24em; line-height: 1.15; font-weight: 400; letter-spacing: -.025em; }
.opening-subtitle { margin-top: 17px; font-family: var(--serif); font-size: 14px; line-height: 1.6; color: var(--muted); }
.opening-message { margin-top: 17px; font-family: var(--chinese); font-size: 15px; line-height: 1.9; color: var(--ink); }
.opening-cta { margin-top: 25px; }
.card-note { position: absolute; right: 22px; bottom: 13px; color: var(--accent); font-family: var(--hand); font-size: 16px; line-height: 1; transform: rotate(-7deg); }
.card-note > span { font-size: 19px; }
.card-hearts { display: none; position: absolute; top: 130px; left: 29px; width: 79px; height: 79px; color: var(--accent); stroke-width: 2; transform: rotate(-12deg); }
.opening-footnote { margin-top: 24px; padding-inline: 10px; max-width: 350px; color: var(--muted); font-family: var(--hand); font-size: 19px; line-height: 1.5; }

/* A little polaroid frame around our real, portrait film. */
.film-page { text-align: center; padding-top: 14px; padding-bottom: 16px; min-height: calc(100svh - var(--masthead-height) - var(--footer-height)); }
.chapter-heading { text-align: center; }
.chapter-title { margin-top: 6px; font-family: var(--chinese); font-size: clamp(29px, 4vw, 38px); line-height: 1.4; letter-spacing: .015em; }
.section-description { margin-top: 7px; font-family: var(--chinese); font-size: 13px; color: var(--muted); line-height: 1.7; }
.film-shell { --film-ratio: .5625; position: relative; width: min(100%, 440px, calc(62svh * var(--film-ratio))); margin: 26px auto 0; padding: 8px; background: var(--letter-paper); border: 1px solid #ead7cf; border-radius: 3px; box-shadow: 3px 4px 0 #efd8d640, 0 8px 22px #7535450b; transform: rotate(-.7deg); }
.film-shell.is-landscape { width: min(100%, 740px, calc(62svh * var(--film-ratio))); }
.film-tape { width: 86px; height: 22px; top: -13px; left: calc(50% - 43px); transform: rotate(4deg); }
.film-frame { position: relative; aspect-ratio: var(--film-ratio); overflow: hidden; border-radius: 2px; background: #3c2028; }
.film-frame video { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: contain; background: #211b1d; }
.film-placeholder { position: absolute; inset: 0; }
.film-cover { display: block; width: 100%; height: 100%; object-fit: cover; }
.film-cover-copy { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #f7efdf; padding: 18px 10px 40px; }
.film-cover-eyebrow { font-size: 8px; line-height: 1.6; letter-spacing: .08em; color: #e6d0c9; }
.film-cover-copy > p { margin-top: 20px; font-family: var(--hand); font-size: clamp(35px, 8vw, 63px); line-height: 1.1; letter-spacing: -.025em; }
.film-cover-rule { width: 25px; height: 1px; margin-top: 24px; background: #cc999b; }
.film-cover-signoff { margin-top: 21px; font-family: var(--serif); font-style: italic; font-size: 14px; color: #e6d0c9; }
.film-status { position: absolute; left: 14px; right: 14px; bottom: 24px; color: #e6d0c9; font-size: 10px; line-height: 1.6; }
.film-caption { display: flex; justify-content: space-between; align-items: center; gap: 7px; padding: 13px 1px 6px; color: var(--accent); font-family: var(--hand); font-size: 15px; line-height: 1.25; text-align: left; }
.film-caption > :last-child { text-align: right; white-space: nowrap; font-family: var(--sans); color: var(--muted); font-size: 9px; }
.playback-help { margin: 14px auto 0; max-width: 420px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.film-invitation { min-height: 72px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; padding-top: 16px; }
.film-next-note { font-family: var(--chinese); color: var(--muted); font-size: 13px; line-height: 1.7; text-wrap: balance; }
.film-letter-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 4px; color: var(--accent); font-family: var(--chinese); font-size: 15px; line-height: 1.7; text-decoration-style: dotted; text-decoration-color: var(--accent-soft); text-underline-offset: 7px; }
.film-letter-link:hover { color: var(--accent-dark); text-decoration-color: var(--accent); }
.film-invitation.is-ready { padding-bottom: 10px; }

/* A blush envelope, a heart seal, and words saved just for her. */
.envelope-scene { min-height: 100svh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding-block: 24px; }
.envelope-button { display: block; width: min(100% - 18px, 330px); margin: 0; border: none; padding: 0; background: transparent; color: var(--accent); cursor: pointer; touch-action: manipulation; transform: rotate(-3deg); transition: transform 250ms; }
.envelope-button:hover { transform: rotate(-1deg); }
.envelope-space { display: block; position: relative; padding-block: 48px; }
.envelope { display: block; position: relative; width: 100%; aspect-ratio: 3 / 2; perspective: 1100px; filter: drop-shadow(0 12px 13px #7535451c); }
.envelope-back { position: absolute; inset: 0; background: #e8c1c0; border: 1px solid #d9adb3; border-radius: 5px; }
.envelope-insert { position: absolute; top: 7%; left: 6%; width: 88%; height: 86%; padding: 24px; text-align: left; background: var(--letter-paper); border: 1px solid #e8dfd2; transition: transform 650ms 180ms cubic-bezier(.2,.65,.3,1); }
.insert-greeting { display: block; font: 30px var(--hand); color: var(--accent); margin-bottom: 18px; }
.insert-line { display: block; width: 100%; height: 1px; background: #eedbd9; margin-top: 13px; }
.insert-line.short { width: 70%; }
.envelope-front { position: absolute; inset: 0; z-index: 2; clip-path: polygon(0 0, 50% 57%, 100% 0, 100% 100%, 0 100%); background: linear-gradient(100deg, #f1d5d2, #fae5de 48%, #f1d5d2); border: 1px solid #dfb8bb; border-radius: 5px; }
.envelope-front::after { content: ""; position: absolute; inset: 0; clip-path: polygon(0 100%, 50% 32%, 100% 100%); background: linear-gradient(0deg, #f3dad4, #fff0e5); }
.envelope-flap { position: absolute; top: 0; left: 0; width: 100%; height: 62%; z-index: 3; clip-path: polygon(0 0, 100% 0, 50% 100%); background: linear-gradient(180deg, #f9e4dc, #ebc9c7); transform-origin: center top; backface-visibility: hidden; transition: transform 620ms cubic-bezier(.25,.1,.25,1); }
.envelope-address { position: absolute; z-index: 3; left: 23px; bottom: 21px; color: #8b535d; font-family: var(--chinese); font-size: 14px; letter-spacing: .025em; }
.envelope-seal { position: absolute; z-index: 4; top: 52%; left: 50%; width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; border-radius: 47% 50% 45% 49%; transform: translate(-50%, -50%) rotate(-7deg); background: linear-gradient(135deg, #a44f64, #832f46 55%, #622239); color: #f9e9df; font: 36px/1 var(--serif); box-shadow: 0 3px 5px #45181e33, inset 0 0 0 2px #b9677040; transition: opacity 220ms, transform 250ms; }
.envelope-seal::before { content: ""; position: absolute; inset: 5px; border: 1px solid #e3a5a359; border-radius: 50%; }
.envelope-button:disabled { cursor: default; }
.envelope-button.is-opening .envelope-flap { transform: rotateX(180deg); }
.envelope-button.is-opening .envelope-seal { opacity: 0; transform: translate(-50%, -60%) rotate(-7deg); }
.envelope-button.is-opening .envelope-insert { transform: translateY(-49%); }

/* The letter stays still and readable, on a page of our own stationery. */
.letter-reading { min-height: 100svh; padding: 35px 0 40px; }
.letter-section { max-width: 740px; }
.letter-paper { position: relative; padding: 38px 27px 46px; background-color: var(--letter-paper); border: 1px solid #ead7cf; border-radius: 5px 7px 4px 6px; box-shadow: 4px 5px 0 #efd8d680, 0 12px 38px -26px #7535452e; }
.letter-paper::after { content: ""; position: absolute; inset: 10px; border: 1px dashed #ecd5d5; border-radius: 2px; pointer-events: none; }
.letter-content { font-family: var(--chinese); font-size: 17px; line-height: 2.05; font-weight: 400; letter-spacing: .025em; overflow-wrap: break-word; line-break: strict; }
.letter-content p + p { margin-top: 24px; }
#letter-title:focus { outline: none; }
.letter-content .letter-signature { margin-top: 39px; color: var(--accent); font-size: 19px; }

@media (min-width: 600px) {
  :root { --masthead-height: 80px; --footer-height: 60px; }
  .section-width { width: min(100% - 88px, 880px); }
  .masthead, .site-footer { width: calc(100% - 88px); }
  .wordmark { font-size: 27px; }
  .masthead-note { font-size: 13px; }
  .opening { padding: 30px 35px 22px; }
  .opening-inner { padding: 32px 50px 57px; }
  .birthday-bow { width: 110px; margin-bottom: 8px; }
  .opening-eyebrow { margin-bottom: 20px; }
  .opening-subtitle { font-size: 16px; }
  .opening-message { font-size: 16px; }
  .card-note { font-size: 21px; right: 32px; bottom: 22px; }
  .card-note > span { font-size: 25px; }
  .card-hearts { display: block; }
  .opening-footnote { max-width: none; font-size: 21px; }
  .film-page { padding-top: 20px; }
  .section-description { font-size: 14px; }
  .film-caption { font-size: 18px; }
  .film-caption > :last-child { font-size: 10px; }
  .envelope-button { width: 360px; }
  .letter-reading { padding-top: 44px; }
  .letter-paper { padding: 56px 64px 63px; }
  .letter-content { font-size: 18px; line-height: 2.1; }
  .letter-content p + p { margin-top: 28px; }
}
@media (max-width: 359px) {
  .masthead { gap: 10px; }
  .wordmark { font-size: 19px; }
  .wordmark span { font-size: 20px; margin-right: 0; }
  .masthead-note { max-width: 52px; line-height: 1.7; font-size: 10px; }
  .opening { padding-inline: 22px; }
  .opening-inner { padding-inline: 16px; }
  .opening h1 { font-size: 32px; }
  .opening-subtitle { font-size: 13px; }
  .opening-message { font-size: 14px; }
  .tape-left, .tape-right { width: 84px; }
  .letter-paper { padding-inline: 23px; }
  .envelope-seal { width: 46px; height: 46px; font-size: 32px; }
}
@media (prefers-reduced-motion: no-preference) {
  .letter-reading.is-arriving { animation: arrive 400ms both; }
  @keyframes arrive { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
@media print {
  body { background: white; color: black; }
  .masthead, .opening, .film-page, .envelope-scene, .site-footer, .skip-link { display: none !important; }
  .letter-reading[hidden] { display: block !important; }
  .letter-section { width: 100%; max-width: none; }
  .letter-paper { background: white; border: none; box-shadow: none; padding: 20px; }
  .letter-paper::after { display: none; }
  .letter-content { font-size: 12pt; line-height: 1.8; }
  .letter-content p { orphans: 3; widows: 3; }
}