/* ================================================================
   1. DESIGN TOKENS — Old Money Birthday · Luxurious Stack Edition
   ================================================================ */
:root {
  --ivory:     #FDFBF7;
  --ivory-alt: #F5F0E8;
  --obsidian:  #121212;
  --pearl:     #F8FAFC;
  --charcoal:  #1A1818;
  --gold:      #D4AF37;
  --gold-lt:   #E5C158;
  --gold-dk:   #AA7C11;
  --gold-grad: linear-gradient(115deg, #AA7C11 0%, #E5C158 45%, #D4AF37 70%, #F0D060 100%);
  --muted-d:   rgba(248, 250, 252, .55);
  --muted-l:   rgba(26, 24, 24, .52);
  --rule-d:    rgba(212, 175, 55, .38);
  --rule-l:    rgba(26, 24, 24, .18);
  --serif:     'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --sans:      'Plus Jakarta Sans', system-ui, sans-serif;
  --page-h:    100vh;
  --linen-d:
    repeating-linear-gradient(0deg,  rgba(255,255,255,.03) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.02) 0 1px, transparent 1px 3px);
  --linen-l:
    repeating-linear-gradient(0deg,  rgba(26,24,24,.018) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(26,24,24,.014) 0 1px, transparent 1px 3px),
    radial-gradient(rgba(120,100,70,.06) 1px, transparent 1.4px) 0 0 / 7px 7px;
}
@supports (height: 100svh) { :root { --page-h: 100svh; } }

/* ================================================================
   2. STACKING ENGINE (100vh Sticky + z-index Bertingkat + Snap)
   ================================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
  overflow-x: hidden;
}
html.is-locked { overflow: hidden; }
body {
  font-family: var(--sans);
  font-weight: 300;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  background: var(--obsidian);
  color: var(--pearl);
}

.stack { position: relative; width: 100%; }

/* Stacking Section: 100vh sticky layer */
.page {
  position: sticky;
  top: 0;
  height: var(--page-h);
  overflow: hidden;
  box-shadow: 0 -20px 40px rgba(0, 0, 0, .3);
}
.page.dark  { background-color: var(--obsidian); background-image: var(--linen-d); color: var(--pearl); }
.page.light { background-color: var(--ivory);    background-image: var(--linen-l); color: var(--charcoal); }

.page:nth-of-type(1) { z-index: 1; box-shadow: none; }
.page:nth-of-type(2) { z-index: 2; }
.page:nth-of-type(3) { z-index: 3; }
.page:nth-of-type(4) { z-index: 4; }
.page:nth-of-type(5) { z-index: 5; }
.page:nth-of-type(6) { z-index: 6; }
.page:nth-of-type(7) { z-index: 7; }

/* Scroll Snap helper anchors */
.snap-points { position: absolute; inset: 0; pointer-events: none; }
.snap-points span {
  position: absolute; left: 0; width: 1px;
  top: calc(var(--i) * var(--page-h)); height: var(--page-h);
  scroll-snap-align: start; scroll-snap-stop: always;
}

.page-inner {
  position: relative; z-index: 1; height: 100%;
  overflow-y: auto; scrollbar-width: none;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 5rem 1.4rem 4rem;
}
.page-inner::-webkit-scrollbar { display: none; }
.cw { width: 100%; max-width: 720px; margin: 0 auto; text-align: center; }

/* Masthead & Folio */
.mh {
  position: absolute; top: 0; left: 0; right: 0; z-index: 3;
  display: flex; justify-content: space-between; align-items: center;
  padding: 1.1rem 1.6rem 0;
  font-size: .56rem; font-weight: 600; letter-spacing: .45em; text-transform: uppercase;
}
.dark  .mh { color: rgba(248,250,252,.42); }
.light .mh { color: rgba(26,24,24,.36); }
.mh::after {
  content: ""; position: absolute; left: 1.6rem; right: 1.6rem; top: 2.5rem; height: 1px;
}
.dark  .mh::after { background: var(--rule-d); }
.light .mh::after { background: var(--rule-l); }

.folio {
  position: absolute; left: 0; right: 0; bottom: 1rem; z-index: 3;
  text-align: center; font-family: var(--serif); font-style: italic; font-size: .85rem;
}
.dark  .folio { color: var(--gold); }
.light .folio { color: var(--gold-dk); }

/* Background image layers */
.pbg {
  position: absolute; inset: 0; z-index: 0; overflow: hidden; pointer-events: none;
}
.pbg::before {
  content: ""; position: absolute; inset: 0;
  background: var(--photo, none) center / cover no-repeat;
  filter: saturate(.55) sepia(.2) contrast(.95) brightness(1.02);
  transform: scale(1.08);
  transition: transform 9s cubic-bezier(.22, 1, .36, 1), opacity 1.2s ease;
  opacity: 0;
}
.pbg.on::before { opacity: 1; }
.page.is-in .pbg::before { transform: scale(1); }
.pbg::after {
  content: ""; position: absolute; inset: 0;
}
.dark  .pbg::after {
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, rgba(18,18,18,.92) 0%, rgba(18,18,18,.82) 55%, rgba(18,18,18,.5) 100%),
    linear-gradient(180deg, rgba(18,18,18,.7) 0%, transparent 18%, transparent 78%, rgba(18,18,18,.75) 100%);
}
.light .pbg::after {
  background:
    radial-gradient(ellipse 80% 60% at 50% 50%, rgba(253,251,247,.94) 0%, rgba(253,251,247,.84) 55%, rgba(253,251,247,.55) 100%),
    linear-gradient(180deg, rgba(253,251,247,.75) 0%, transparent 18%, transparent 78%, rgba(253,251,247,.8) 100%);
}

/* ================================================================
   3. TYPOGRAPHY & EMBELLISHMENTS
   ================================================================ */
.eyebrow {
  display: inline-block; font-size: .58rem; font-weight: 500;
  letter-spacing: .5em; text-transform: uppercase; margin-bottom: .7rem;
}
.dark  .eyebrow { color: var(--gold); }
.light .eyebrow { color: var(--gold-dk); }

.display {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(2.3rem, 10vw, 4.3rem); line-height: .98;
  letter-spacing: -.01em;
}
.display em { font-style: italic; color: var(--gold); }
.lt { color: var(--pearl); }
.dt { color: var(--charcoal); }

.heading {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.8rem, 7vw, 2.9rem); line-height: 1.05;
}
.heading em { font-style: italic; color: var(--gold); }

.sub {
  font-size: clamp(.82rem, 2.4vw, .98rem); line-height: 1.72;
  font-weight: 300; max-width: 520px; margin-inline: auto;
}
.dark  .sub { color: var(--muted-d); }
.light .sub { color: var(--muted-l); }

.gline {
  display: block; height: 1px; margin: 1.3rem auto;
  background: var(--gold-grad); width: 70px;
}
.drule {
  display: flex; align-items: center; gap: .75rem;
  justify-content: center; margin: 1rem auto;
}
.drule::before, .drule::after { content: ""; flex: 0 1 55px; height: 1px; }
.dark  .drule::before, .dark  .drule::after { background: var(--rule-d); }
.light .drule::before, .light .drule::after { background: var(--rule-l); }
.dark  .drule i { color: var(--gold); font-size: .52rem; }
.light .drule i { color: var(--gold-dk); font-size: .52rem; }

/* Buttons */
.btn-lux {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  padding: .85rem 1.9rem; font-family: var(--sans); font-size: .75rem; font-weight: 600;
  letter-spacing: .24em; text-transform: uppercase; color: var(--obsidian);
  background: var(--gold-grad); border: 0; box-shadow: 0 14px 28px -10px rgba(212, 175, 55, .55);
  cursor: pointer; text-decoration: none; transition: transform .3s, box-shadow .3s;
}
.btn-lux:hover { color: var(--obsidian); transform: translateY(-2px); box-shadow: 0 18px 34px -8px rgba(212, 175, 55, .7); }
.btn-ln {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .8rem 1.6rem; font-family: var(--sans); font-size: .72rem; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase; color: var(--gold);
  background: transparent; border: 1px solid var(--gold); cursor: pointer; text-decoration: none;
  transition: background .3s, color .3s, transform .3s;
}
.btn-ln:hover { background: var(--gold); color: var(--obsidian); transform: translateY(-2px); }
.btn-ln.dark { border-color: var(--rule-d); color: var(--pearl); }
.btn-ln.dark:hover { background: var(--pearl); color: var(--obsidian); }

/* Badges & Hero details */
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .62rem; font-weight: 600; letter-spacing: .35em; text-transform: uppercase;
  color: var(--gold); padding: .35rem 1rem; border: 1px solid var(--rule-d); margin-bottom: 1.2rem;
}
.hero-badge i { animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: .4; } 50% { opacity: 1; } }

.age-ghost {
  position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%);
  font-family: var(--serif); font-size: clamp(6.5rem, 28vw, 13rem); font-weight: 300;
  color: rgba(212, 175, 55, .06); pointer-events: none; z-index: 0; line-height: 1;
}
.scroll-cue {
  display: inline-flex; flex-direction: column; align-items: center; gap: .4rem;
  font-size: .52rem; letter-spacing: .4em; text-transform: uppercase; color: var(--muted-d);
  margin-top: 1.8rem;
}
.scroll-cue::after {
  content: ""; width: 1px; height: 26px; background: var(--rule-d);
  animation: cue 2s cubic-bezier(.65, 0, .35, 1) infinite;
}
@keyframes cue { 0% { transform: scaleY(0); transform-origin: top; } 50% { transform: scaleY(1); transform-origin: top; } 50.1% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* Cake SVG Stage */
.cake-wrap {
  width: min(190px, 45vw); margin: 0 auto 1.2rem; cursor: pointer;
  filter: drop-shadow(0 14px 26px rgba(0, 0, 0, .25)); transition: transform .3s;
}
.cake-wrap:hover { transform: scale(1.03); }
.cflame { transform-origin: 50% 90%; animation: cflame .18s ease-in-out infinite alternate; }
.cflame:nth-child(2) { animation-duration: .14s; }
.cflame:nth-child(3) { animation-duration: .22s; }
@keyframes cflame { from { transform: scale(1) rotate(-2deg); } to { transform: scale(.92, 1.08) rotate(2deg); } }
.cake-wrap.out .cflame { display: none; }
.cake-wrap.out .spuff { animation: puff 1.4s ease-out forwards; }
@keyframes puff { 0% { opacity: .7; transform: translateY(0) scale(.6); } 100% { opacity: 0; transform: translateY(-30px) scale(1.8); } }
.wish-burst {
  font-family: var(--serif); font-style: italic; font-size: 1.15rem; color: var(--gold-dk);
  opacity: 0; transform: translateY(6px); transition: opacity .6s, transform .6s; min-height: 1.6rem;
}
.wish-burst.show { opacity: 1; transform: translateY(0); }

/* Profile / The Birthday Girl */
.profile-card {
  display: flex; flex-direction: column; align-items: center; text-align: center; margin-bottom: 1rem;
}
.profile-img-wrap {
  position: relative; width: 120px; height: 120px; margin: 0 auto .8rem;
}
.profile-img-wrap img {
  width: 100%; height: 100%; object-fit: cover; border-radius: 50%;
  border: 3px solid var(--gold); box-shadow: 0 10px 25px rgba(0,0,0,.15);
}
.profile-name {
  font-family: var(--serif); font-size: 1.65rem; font-weight: 500; color: var(--charcoal); margin-bottom: .2rem;
}
.profile-full {
  font-size: .62rem; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--gold-dk); margin-bottom: .3rem;
}
.profile-parents {
  font-size: .78rem; line-height: 1.5; color: var(--muted-l);
}

/* Event & Countdown */
.countdown-bar {
  display: flex; justify-content: center; gap: .8rem; margin: 1.2rem auto 1.6rem;
}
.cd-unit {
  min-width: 64px; padding: .6rem .4rem; background: rgba(255, 255, 255, .04);
  border: 1px solid var(--rule-d); text-align: center;
}
.cd-val {
  font-family: var(--serif); font-size: 1.8rem; font-weight: 400; line-height: 1; color: var(--pearl);
}
.cd-lbl {
  font-size: .52rem; letter-spacing: .25em; text-transform: uppercase; color: var(--gold); margin-top: .2rem;
}
.event-box {
  border: 1px solid var(--rule-d); padding: 1.4rem; background: rgba(0,0,0,.25); text-align: left;
}
.event-title {
  font-family: var(--serif); font-size: 1.4rem; color: var(--gold); margin-bottom: .5rem;
}
.event-meta {
  list-style: none; padding: 0; margin: 0 0 1rem; font-size: .82rem; color: var(--muted-d);
}
.event-meta li { margin-bottom: .4rem; display: flex; align-items: center; gap: .6rem; }
.event-meta i { color: var(--gold); }

/* Gallery */
.ggrid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-bottom: 1rem;
}
.gi {
  position: relative; aspect-ratio: 1; overflow: hidden; margin: 0; background: #000;
}
.gi img {
  width: 100%; height: 100%; object-fit: cover; filter: saturate(.85); transition: transform 1.2s;
}
.gi:hover img { transform: scale(1.08); filter: saturate(1.05); }
.gi figcaption {
  position: absolute; left: .4rem; bottom: .3rem; font-family: var(--serif); font-style: italic;
  font-size: .65rem; color: #fff; text-shadow: 0 1px 3px rgba(0,0,0,.8);
}

/* Kado Digital (VIP Card) */
.vip-card {
  position: relative; overflow: hidden; padding: 1.2rem 1.4rem; margin: 0 auto .9rem; max-width: 380px;
  text-align: left; color: #f5ecd9; background: linear-gradient(135deg, #1f1d1d 0%, #141414 55%, #0b0a0a 100%);
  border: 1px solid var(--gold); outline: 1px solid rgba(212, 175, 55, .35); outline-offset: -6px;
  box-shadow: 0 18px 36px -20px rgba(0, 0, 0, .8);
}
.vip-card.alt { background: linear-gradient(135deg, #18213a 0%, #0e1424 60%, #080c18 100%); }
.vip-card .bank-name { font-family: var(--serif); font-style: italic; font-size: 1.45rem; color: var(--gold); }
.vip-card .card-num { font-family: var(--serif); font-size: 1.45rem; letter-spacing: .12em; margin: .8rem 0 .2rem; }
.vip-card .card-holder { font-size: .62rem; letter-spacing: .25em; text-transform: uppercase; color: rgba(245, 236, 217, .75); }
.vip-card .btn-copy-gold {
  position: relative; z-index: 1; border: 1px solid var(--gold); background: transparent; color: var(--gold);
  padding: .4rem .8rem; font-size: .58rem; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; cursor: pointer;
}
.vip-card .btn-copy-gold:hover { background: var(--gold); color: var(--obsidian); }

/* RSVP Form */
.rsvp-form-box {
  border: 1px solid var(--rule-l); padding: 1.3rem; background: rgba(255,255,255,.6); margin-bottom: 1.2rem; text-align: left;
}
.form-lbl {
  font-size: .56rem; font-weight: 600; letter-spacing: .25em; text-transform: uppercase; color: var(--muted-l); margin-bottom: .3rem; display: block;
}
.form-in {
  width: 100%; border: 0; border-bottom: 1px solid var(--rule-l); background: transparent; padding: .45rem 0; font-size: .88rem; color: var(--charcoal); margin-bottom: .8rem; outline: none;
}
.form-in:focus { border-bottom-color: var(--charcoal); }
.attend-row {
  display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--rule-l); margin-bottom: .8rem;
}
.attend-row input { position: absolute; opacity: 0; pointer-events: none; }
.attend-row label {
  padding: .5rem .2rem; text-align: center; font-size: .62rem; font-weight: 600; letter-spacing: .15em; text-transform: uppercase; cursor: pointer; transition: .25s;
}
.attend-row label + input + label, .attend-row input + label ~ label { border-left: 1px solid var(--rule-l); }
.attend-row input:checked + label { background: var(--charcoal); color: var(--ivory); }

/* Feed */
.feed {
  max-height: 180px; overflow-y: auto; text-align: left; border-top: 1px solid var(--rule-l); border-bottom: 1px solid var(--rule-l); margin-bottom: 1rem;
}
.feed-item {
  padding: .65rem 0; border-bottom: 1px solid rgba(26,24,24,.1); font-size: .8rem;
}
.feed-item:last-child { border-bottom: 0; }
.feed-name { font-family: var(--serif); font-size: .95rem; font-weight: 600; }
.feed-msg { color: var(--charcoal); margin: .15rem 0; }
.feed-time { font-size: .62rem; color: var(--muted-l); }

/* Opening Overlay */
.opening {
  position: fixed; inset: 0; z-index: 1000; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  background: var(--obsidian); background-image: var(--linen-d); color: var(--pearl);
  padding: 2rem 1.4rem; transition: opacity .9s cubic-bezier(.16, 1, .3, 1), visibility .9s;
}
.opening.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.oframe {
  position: absolute; inset: 1.2rem; border: 1px solid var(--rule-d); pointer-events: none;
}
.ocontent { position: relative; z-index: 2; }
.tobox {
  margin: 1.4rem auto 1.8rem; padding: .9rem 1.4rem; max-width: 300px;
  border-top: 1px solid var(--rule-d); border-bottom: 1px solid var(--rule-d);
}
.tobox small { font-size: .55rem; letter-spacing: .35em; text-transform: uppercase; color: var(--muted-d); }
.tobox strong { display: block; margin-top: .3rem; font-family: var(--serif); font-size: 1.6rem; font-weight: 400; color: var(--pearl); }

/* Floating Vinyl Player & Pager */
.player {
  position: fixed; right: 1rem; bottom: calc(1rem + env(safe-area-inset-bottom));
  z-index: 500; width: 3.2rem; height: 3.2rem;
  border-radius: 50%; border: 2px solid var(--gold);
  background: var(--obsidian); cursor: pointer;
  display: grid; place-items: center; overflow: hidden;
  opacity: 0; transform: scale(.5); pointer-events: none;
  transition: opacity .6s, transform .6s;
}
.player.vis { opacity: 1; transform: scale(1); pointer-events: auto; }
.vinyl {
  width: 100%; height: 100%; border-radius: 50%;
  background: repeating-radial-gradient(circle at 50%, #111 0,#222 2px,#111 4px);
  position: relative;
}
.vinyl::after {
  content: ""; position: absolute; inset: 30%; border-radius: 50%; background: var(--gold);
  box-shadow: 0 0 0 2px #111, 0 0 0 4px var(--gold-dk);
}
.player.playing .vinyl { animation: spinslow 3s linear infinite; }
@keyframes spinslow { to { transform: rotate(360deg); } }

.pager {
  position: fixed; right: .8rem; top: 50%; z-index: 500;
  transform: translateY(-50%); display: flex; flex-direction: column; gap: .5rem;
  opacity: 0; transition: opacity .8s;
}
.pager.vis { opacity: 1; }
.pager a { display: block; width: 12px; height: 1px; background: rgba(212,175,55,.38); transition: width .4s, background .4s; }
.pager a.active { width: 24px; background: var(--gold); }

/* Toast */
.toast-x {
  position: fixed; left: 50%; bottom: 5rem; z-index: 600;
  padding: .65rem 1.2rem; font-size: .6rem; font-weight: 600; letter-spacing: .28em; text-transform: uppercase;
  color: var(--obsidian); background: var(--gold);
  opacity: 0; transform: translate(-50%, 10px); pointer-events: none; transition: .35s; white-space: nowrap;
}
.toast-x.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-height: 680px) {
  .page-inner { padding: 3.8rem 1.2rem 3.4rem; }
  .cake-wrap { width: min(150px, 36vw); }
}

/* ================================================================
   4. KELAS PENGGANTI STYLE INLINE
   ================================================================ */
.display-cover { font-size: clamp(2.4rem, 11vw, 4.2rem); }
.confetti-cvs { position: fixed; inset: 0; z-index: 900; pointer-events: none; width: 100%; height: 100%; }
.sp-0 { --i: 0; } .sp-1 { --i: 1; } .sp-2 { --i: 2; } .sp-3 { --i: 3; }
.sp-4 { --i: 4; } .sp-5 { --i: 5; } .sp-6 { --i: 6; }
.age-wrap { position: relative; display: inline-block; }
.profile-quote { font-family: var(--serif); font-style: italic; font-size: 1.05rem; line-height: 1.6; color: var(--charcoal); }
#relightBtn { display: none; }

/* Latar dekoratif tema (bukan data) */
.pbg-letter { --photo: url('https://images.unsplash.com/photo-1620926085250-171c5db46de4?auto=format&fit=crop&w=1600&q=65'); }
.pbg-rsvp   { --photo: url('https://images.unsplash.com/photo-1519741497674-611481863552?auto=format&fit=crop&w=1600&q=65'); }

/* Surat */
.letter-box { border: 1px solid var(--rule-d); padding: 1.8rem; background: rgba(0,0,0,.35); line-height: 1.75; text-align: left; font-family: var(--serif); font-size: 1.05rem; }
.drule-letter { margin: 1rem 0 .8rem; }
.letter-sign { text-align: right; font-style: italic; color: var(--gold); }

/* RSVP */
.page-inner-top { justify-content: flex-start; padding-top: 4.8rem; }
.rsvp-form-dark { border: 1px solid var(--rule-d); padding: 1.2rem; background: rgba(0,0,0,.35); }
.attend-row-dark { border-color: var(--rule-d); }
.select-clear { background: transparent; }
.feed-dark { border-color: var(--rule-d); max-height: 140px; }
.cquote { font-family: var(--serif); font-size: 1.15rem; font-style: italic; color: var(--gold); }