:root {
  --ivory: #f7f1e8;
  --cream: #fbf8f2;
  --mocha: #6b5143;
  --champagne: #d8c3a5;
  --gold: #b99a68;
  --espresso: #3b2a23;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--ivory);
  color: var(--espresso);
  font-family: "Nunito", sans-serif;
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

body.is-locked {
  overflow: hidden;
  height: 100dvh;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

h2,
.display-date,
.countdown span,
.card-title {
  font-family: "Cormorant Garamond", serif;
  font-weight: 500;
}

.names,
.letter-names,
.script,
.letter-note {
  font-family: "Great Vibes", cursive;
  font-weight: 400;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* Closed letter */

.opening {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--ivory);
  padding: 24px 18px 40px;
  transition: opacity 0.7s ease, visibility 0.7s ease;
}

.opening.is-gone {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.opening-whisper {
  margin-bottom: 22px;
  font-family: "Cinzel", serif;
  font-size: 10px;
  letter-spacing: 0.46em;
  text-transform: uppercase;
  color: var(--mocha);
}

.letter {
  appearance: none;
  border: 0;
  background: none;
  width: min(340px, 88vw);
  cursor: pointer;
  text-align: center;
  perspective: 1200px;
}

.letter-flap {
  display: block;
  height: 78px;
  margin-bottom: -1px;
  background: linear-gradient(180deg, #ead9bd, var(--champagne));
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  border-top: 1px solid var(--gold);
  transform-origin: top center;
  transition: transform 1.05s cubic-bezier(0.22, 1, 0.36, 1);
}

.letter-paper {
  display: block;
  background: var(--cream);
  border: 1px solid var(--gold);
  box-shadow: 0 22px 50px rgba(59, 42, 35, 0.16);
  padding: 42px 28px 28px;
  position: relative;
}

.wax-seal {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -58%);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #8d6e5b, var(--mocha) 58%, var(--espresso));
  border: 2px solid var(--gold);
  color: var(--cream);
  font-family: "Cormorant Garamond", serif;
  font-size: 14px;
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 16px rgba(59, 42, 35, 0.25);
  transition: opacity 0.35s ease;
}

.letter-small {
  display: block;
  margin-top: 18px;
  font-family: "Cinzel", serif;
  font-size: 10px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--mocha);
}

.letter-names {
  display: block;
  margin-top: 18px;
  font-size: clamp(44px, 13vw, 58px);
  line-height: 1.05;
  color: var(--espresso);
}

.letter-names i {
  display: block;
  font-style: italic;
  font-size: 0.42em;
  color: var(--gold);
  margin: 8px 0;
}

.letter-line {
  display: block;
  width: 42px;
  height: 1px;
  background: var(--gold);
  margin: 22px auto;
}

.letter-note {
  display: block;
  font-size: 26px;
  color: var(--mocha);
}

.letter-date {
  display: block;
  margin-top: 16px;
  font-family: "Cinzel", serif;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--gold);
}

.letter-cta {
  display: block;
  margin-top: 28px;
  font-family: "Cinzel", serif;
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--espresso);
  border: 1px solid var(--gold);
  padding: 12px 16px;
}

.letter.is-opening .letter-flap {
  transform: rotateX(180deg);
}

.letter.is-opening .wax-seal,
.letter.is-opening .letter-cta {
  opacity: 0;
}

/* Opened invitation */

.sheet {
  max-width: 680px;
  margin: 0 auto;
  background: var(--cream);
  border-left: 1px solid var(--champagne);
  border-right: 1px solid var(--champagne);
}

.hero,
.block,
.details,
.ending {
  padding: 72px 24px;
  text-align: center;
}

.eyebrow {
  font-family: "Cinzel", serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--mocha);
  margin-bottom: 20px;
}

.eyebrow.light {
  color: var(--champagne);
}

.portrait {
  width: min(340px, 82vw);
  aspect-ratio: 3 / 4;
  margin: 8px auto 32px;
  overflow: hidden;
  background: var(--champagne);
  border: 8px solid #fffaf3;
  outline: 1px solid var(--champagne);
}

.names {
  font-size: clamp(52px, 14vw, 92px);
  line-height: 1.08;
}

.names span {
  display: block;
  font-size: 0.55em;
  color: var(--gold);
  margin: 2px 0;
}

.script {
  margin-top: 18px;
  font-size: clamp(26px, 5.5vw, 34px);
  color: var(--mocha);
}

.copy {
  max-width: 440px;
  margin: 16px auto 0;
  color: var(--mocha);
  font-size: 14px;
}

.block h2 {
  font-size: clamp(30px, 7.5vw, 44px);
  line-height: 1.15;
}

.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 36px;
}

.gallery figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--champagne);
}

.gallery figure:nth-child(even) {
  margin-top: 22px;
}

.details {
  background: var(--ivory);
}

.display-date {
  font-size: clamp(46px, 12vw, 78px);
  letter-spacing: 0.04em;
  line-height: 0.95;
}

.meta {
  margin-top: 12px;
  font-family: "Cinzel", serif;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold);
}

.detail-card {
  margin-top: 40px;
  padding: 32px 22px 36px;
  background: var(--cream);
  border: 1px solid var(--champagne);
}

.card-label {
  font-family: "Cinzel", serif;
  font-size: 10px;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.card-title {
  font-size: 32px;
  margin-bottom: 6px;
}

.card-text {
  color: var(--mocha);
  font-size: 14px;
}

.detail-rule {
  width: 36px;
  height: 1px;
  background: var(--gold);
  margin: 28px auto;
}

.venue-photo {
  width: min(280px, 78vw);
  aspect-ratio: 3 / 4;
  margin: 16px auto 18px;
  overflow: hidden;
  background: var(--champagne);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 22px;
  min-height: 48px;
  padding: 12px 24px;
  background: var(--espresso);
  color: var(--cream);
  border: 1px solid var(--gold);
  text-decoration: none;
  font-family: "Cinzel", serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
}

.countdown-block {
  background: var(--mocha);
  color: var(--cream);
  text-align: center;
  padding: 64px 18px;
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 28px;
}

.countdown div {
  padding: 6px 4px;
  border-right: 1px solid rgba(216, 195, 165, 0.35);
}

.countdown div:last-child {
  border-right: 0;
}

.countdown span {
  display: block;
  font-size: clamp(32px, 8vw, 56px);
  line-height: 1;
}

.countdown small {
  display: block;
  margin-top: 8px;
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--champagne);
}

.ending {
  padding-bottom: 100px;
}

.ending-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: min(560px, 90vw);
  margin: 0 auto;
}

.ending-pair figure {
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--champagne);
  border: 6px solid #fffaf3;
  outline: 1px solid var(--champagne);
}

.ending-names {
  margin-top: 36px;
}

.music-btn {
  position: fixed;
  left: max(16px, env(safe-area-inset-left));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 50;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: var(--espresso);
  color: var(--champagne);
  font-size: 15px;
  cursor: pointer;
}

.music-btn[hidden] {
  display: none;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
}

.reveal.is-visible {
  animation: rise 0.75s ease forwards;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 768px) {
  .hero,
  .block,
  .details,
  .ending {
    padding: 96px 48px;
  }

  .gallery figure:nth-child(even) {
    margin-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .letter-flap,
  .opening,
  .wax-seal {
    transition: none;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    animation: none;
  }
}