/* ========================================================
   SCROLL REVEAL ANIMATIONS — RED VELVET & GOLD THEME
   Granular 5s smooth scroll reveal animations with extended left/right travel
   ======================================================== */

:root {
  --reveal-duration: 5s;
  --reveal-ease: cubic-bezier(0.16, 1, 0.3, 1);
  --slide-distance-wide: 90px;
  --slide-distance-medium: 70px;
}

/* Ngăn thanh cuộn ngang (dùng 100% thay 100vw — 100vw dễ tràn trên WebView) */
html,
body {
  overflow-x: hidden;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
}

.app-container {
  overflow-x: hidden;
  overflow-x: clip;
  /* Không set max-width ở đây — để responsive.css giữ max-width: 900px trên desktop */
}

/* Các section và card luôn hiển thị trọn vẹn, không sinh thanh cuộn dọc bên trong */
.reveal-section,
.reveal-block,
.reveal-item,
.red-card,
.reception-card,
.venue-card,
.timeline-card,
.countdown-card,
.dresscode-card,
.guestbook-card,
.gift-wrapper {
  overflow: visible !important;
}

/* Base reveal transition for all revealable elements */
.reveal-block,
.reveal-section,
.reveal-item {
  will-change: opacity, transform;
}

/* Override base section transition to use the smooth 5s curve */
.reveal-section {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--reveal-duration) var(--reveal-ease),
              transform var(--reveal-duration) var(--reveal-ease) !important;
  will-change: opacity, transform;
}

.reveal-section.visible,
.visible.reveal-section {
  opacity: 1;
  transform: translateY(0) !important;
}

/* ========================================================
   1. HEADINGS & TITLES
   ======================================================== */
.card-heading,
.section-header h2,
.venue-heading,
.guestbook-heading,
.gift-heading,
.envelope-subtitle {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.visible .card-heading,
.visible .section-header h2,
.visible .venue-heading,
.visible .guestbook-heading,
.visible .gift-heading,
.visible .envelope-subtitle,
.card-heading.visible,
.venue-heading.visible,
.guestbook-heading.visible,
.gift-heading.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Subtitles */
.section-header p,
.countdown-subtitle,
.dresscode-subtitle,
.reception-lead {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

.visible .section-header p,
.visible .countdown-subtitle,
.visible .dresscode-subtitle,
.visible .reception-lead {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================================
   2. HERO COVER SECTION
   ======================================================== */
.hero-kicker {
  opacity: 0;
  transform: translateY(-30px);
  transition: opacity 2s ease-out 0s,
              transform 2.5s var(--reveal-ease) 0s;
  will-change: opacity, transform;
}

.envelope-stage {
  opacity: 0;
  transform: translateY(50px) scale(0.9);
  transition: opacity 2s ease-out 0.08s,
              transform 2.7s var(--reveal-ease) 0.08s;
  will-change: opacity, transform;
}

.hero-peony-deco {
  opacity: 0;
  transform: scale(0.5) rotate(-20deg);
  transition: opacity 2s ease-out 0.25s,
              transform 2.7s var(--reveal-ease) 0.25s;
  will-change: opacity, transform;
}

.hero-title-box {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity 2s ease-out 0.15s,
              transform 2.7s var(--reveal-ease) 0.15s;
  will-change: opacity, transform;
}

.hero-names {
  opacity: 0;
  transform: translateY(25px) scale(0.92);
  transition: opacity 2s ease-out 0.2s,
              transform 2.7s var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

.hero-quote {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 2s ease-out 0.3s,
              transform 2.7s var(--reveal-ease) 0.3s;
  will-change: opacity, transform;
}

.hero-section.visible .hero-kicker,
.hero-section.visible .envelope-stage,
.hero-section.visible .hero-peony-deco,
.hero-section.visible .hero-title-box,
.hero-section.visible .hero-names,
.hero-section.visible .hero-quote,
.visible .hero-kicker,
.visible .envelope-stage,
.visible .hero-peony-deco,
.visible .hero-title-box,
.visible .hero-names,
.visible .hero-quote {
  opacity: 1;
  transform: translate(0) scale(1) rotate(0deg);
}

/* ========================================================
   3. SECTION 1: THÔNG TIN LỄ CƯỚI (WEDDING INFO)
   ======================================================== */
.red-card {
  opacity: 0;
  transform: translateY(45px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.red-card.visible,
.visible .red-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.card-flower-lotus-wrap {
  opacity: 0;
  transform: translateX(45px) scale(0.92);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
  will-change: opacity, transform;
}

.red-card.visible .card-flower-lotus-wrap,
.visible .card-flower-lotus-wrap {
  opacity: 1;
  transform: translateX(0) scale(1);
}



/* Hai gia đình: Nhà trai bay từ bên trái (-90px), Nhà gái bay từ bên phải (+90px) */
.parents-grid {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.25s,
              transform var(--reveal-duration) var(--reveal-ease) 0.25s;
  will-change: opacity, transform;
}

.family-side:first-child {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide))) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
  will-change: opacity, transform;
}

.family-side:last-child {
  opacity: 0;
  transform: translateX(var(--slide-distance-wide)) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
  will-change: opacity, transform;
}

.announcement-text {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.5s,
              transform var(--reveal-duration) var(--reveal-ease) 0.5s;
  will-change: opacity, transform;
}

/* Tên cô dâu chú rể lướt quãng đường xa từ 2 bên */
.couple-highlight-names {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.6s,
              transform var(--reveal-duration) var(--reveal-ease) 0.6s;
  will-change: opacity, transform;
}

.couple-highlight-names .groom-name {
  display: inline-block;
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide))) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.68s,
              transform var(--reveal-duration) var(--reveal-ease) 0.68s;
  will-change: opacity, transform;
}

.couple-highlight-names .bride-name {
  display: inline-block;
  opacity: 0;
  transform: translateX(var(--slide-distance-wide)) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.68s,
              transform var(--reveal-duration) var(--reveal-ease) 0.68s;
  will-change: opacity, transform;
}

.couple-highlight-names .amp {
  display: inline-block;
  opacity: 0;
  transform: scale(0.2) rotate(-30deg);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.72s,
              transform var(--reveal-duration) var(--reveal-ease) 0.72s;
  will-change: opacity, transform;
}

.ceremony-note {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.85s,
              transform var(--reveal-duration) var(--reveal-ease) 0.85s;
  will-change: opacity, transform;
}

.ceremony-time-badge {
  opacity: 0;
  transform: translateY(30px) scale(0.85);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 1s,
              transform var(--reveal-duration) var(--reveal-ease) 1s;
  will-change: opacity, transform;
}

.visible .parents-grid,
.visible .family-side:first-child,
.visible .family-side:last-child,
.visible .announcement-text,
.visible .couple-highlight-names,
.visible .couple-highlight-names .groom-name,
.visible .couple-highlight-names .bride-name,
.visible .couple-highlight-names .amp,
.visible .ceremony-note,
.visible .ceremony-time-badge,
.red-card.visible .parents-grid,
.red-card.visible .family-side:first-child,
.red-card.visible .family-side:last-child,
.red-card.visible .announcement-text,
.red-card.visible .couple-highlight-names,
.red-card.visible .couple-highlight-names .groom-name,
.red-card.visible .couple-highlight-names .bride-name,
.red-card.visible .couple-highlight-names .amp,
.red-card.visible .ceremony-note,
.red-card.visible .ceremony-time-badge {
  opacity: 1;
  transform: translate(0) scale(1) rotate(0deg);
}

/* ========================================================
   4. SECTION 2: ALBUM ẢNH CƯỚI (GALLERY)
   ======================================================== */
.gallery-carousel {
  opacity: 0;
  transform: translateY(40px) scale(0.94);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

.carousel-btn.prev {
  opacity: 0;
  transform: translateX(-50px) translateY(-50%);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
}

.carousel-btn.next {
  opacity: 0;
  transform: translateX(50px) translateY(-50%);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
}

.gallery-carousel.visible .carousel-btn.prev,
.visible .carousel-btn.prev {
  opacity: 1;
  transform: translateX(0) translateY(-50%);
}

.gallery-carousel.visible .carousel-btn.next,
.visible .carousel-btn.next {
  opacity: 1;
  transform: translateX(0) translateY(-50%);
}

.carousel-dots {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.4s,
              transform var(--reveal-duration) var(--reveal-ease) 0.4s;
  will-change: opacity, transform;
}

.visible .gallery-carousel,
.visible .carousel-dots,
.gallery-carousel.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ========================================================
   5. SECTION 3: TIỆC CƯỚI & LỊCH & ĐẾM NGƯỢC (RECEPTION)
   ======================================================== */
.reception-card {
  opacity: 0;
  transform: translateY(45px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.reception-card.visible,
.visible .reception-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.reception-day-time {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.25s,
              transform var(--reveal-duration) var(--reveal-ease) 0.25s;
}

.reception-date-block {
  opacity: 0;
  transform: scale(0.75) translateY(25px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
}

.reception-lunar {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.45s,
              transform var(--reveal-duration) var(--reveal-ease) 0.45s;
}

/* Hai mốc giờ Đón Khách (-80px) & Khai Tiệc (+80px) */
.reception-time-col:first-child {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-medium))) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.55s,
              transform var(--reveal-duration) var(--reveal-ease) 0.55s;
}

.reception-time-col:last-child {
  opacity: 0;
  transform: translateX(var(--slide-distance-medium)) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.55s,
              transform var(--reveal-duration) var(--reveal-ease) 0.55s;
}

.calendar-paper {
  opacity: 0;
  transform: translateY(40px) scale(0.92);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.65s,
              transform var(--reveal-duration) var(--reveal-ease) 0.65s;
  will-change: opacity, transform;
}

/* Stagger calendar days */
.calendar-grid-days span {
  opacity: 0;
  transform: scale(0.6);
  transition: opacity var(--reveal-duration) ease,
              transform var(--reveal-duration) var(--reveal-ease);
}

.reception-card.visible .calendar-grid-days span,
.visible .calendar-grid-days span {
  opacity: 1;
  transform: scale(1);
}

.reception-card.visible .calendar-grid-days span:nth-child(1)  { transition-delay: 0.70s; }
.reception-card.visible .calendar-grid-days span:nth-child(2)  { transition-delay: 0.72s; }
.reception-card.visible .calendar-grid-days span:nth-child(3)  { transition-delay: 0.74s; }
.reception-card.visible .calendar-grid-days span:nth-child(4)  { transition-delay: 0.76s; }
.reception-card.visible .calendar-grid-days span:nth-child(5)  { transition-delay: 0.78s; }
.reception-card.visible .calendar-grid-days span:nth-child(6)  { transition-delay: 0.80s; }
.reception-card.visible .calendar-grid-days span:nth-child(7)  { transition-delay: 0.82s; }
.reception-card.visible .calendar-grid-days span:nth-child(8)  { transition-delay: 0.84s; }
.reception-card.visible .calendar-grid-days span:nth-child(9)  { transition-delay: 0.86s; }
.reception-card.visible .calendar-grid-days span:nth-child(10) { transition-delay: 0.88s; }
.reception-card.visible .calendar-grid-days span:nth-child(11) { transition-delay: 0.90s; }
.reception-card.visible .calendar-grid-days span:nth-child(12) { transition-delay: 0.92s; }
.reception-card.visible .calendar-grid-days span:nth-child(13) { transition-delay: 0.94s; }
.reception-card.visible .calendar-grid-days span:nth-child(14) { transition-delay: 0.96s; }
.reception-card.visible .calendar-grid-days span:nth-child(15) { transition-delay: 0.98s; }
.reception-card.visible .calendar-grid-days span:nth-child(16) { transition-delay: 1.00s; }
.reception-card.visible .calendar-grid-days span:nth-child(17) { transition-delay: 1.02s; }
.reception-card.visible .calendar-grid-days span:nth-child(18) { transition-delay: 1.04s; }
.reception-card.visible .calendar-grid-days span:nth-child(19) { transition-delay: 1.06s; }
.reception-card.visible .calendar-grid-days span:nth-child(20) { transition-delay: 1.08s; }
.reception-card.visible .calendar-grid-days span:nth-child(n+21) { transition-delay: 1.10s; }

.reception-actions #btn-add-calendar {
  opacity: 0;
  transform: translateX(-70px) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.85s,
              transform var(--reveal-duration) var(--reveal-ease) 0.85s;
}

.reception-actions #btn-trigger-rsvp {
  opacity: 0;
  transform: translateX(70px) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.85s,
              transform var(--reveal-duration) var(--reveal-ease) 0.85s;
}

.visible .reception-day-time,
.visible .reception-date-block,
.visible .reception-lunar,
.visible .reception-time-col:first-child,
.visible .reception-time-col:last-child,
.visible .calendar-paper,
.visible .reception-actions #btn-add-calendar,
.visible .reception-actions #btn-trigger-rsvp,
.reception-card.visible .reception-day-time,
.reception-card.visible .reception-date-block,
.reception-card.visible .reception-lunar,
.reception-card.visible .reception-time-col:first-child,
.reception-card.visible .reception-time-col:last-child,
.reception-card.visible .calendar-paper,
.reception-card.visible .reception-actions #btn-add-calendar,
.reception-card.visible .reception-actions #btn-trigger-rsvp {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* ========================================================
   6. SECTION 4: ĐỊA ĐIỂM & BẢN ĐỒ (VENUE)
   ======================================================== */
.venue-card {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.venue-card.visible,
.visible .venue-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.venue-name {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide)));
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

.venue-address {
  opacity: 0;
  transform: translateX(var(--slide-distance-wide));
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.3s,
              transform var(--reveal-duration) var(--reveal-ease) 0.3s;
  will-change: opacity, transform;
}

.map-embed-wrapper {
  opacity: 0;
  transform: scale(0.85) translateY(30px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.45s,
              transform var(--reveal-duration) var(--reveal-ease) 0.45s;
  will-change: opacity, transform;
}

.venue-direction-btn {
  opacity: 0;
  transform: translateY(30px) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.6s,
              transform var(--reveal-duration) var(--reveal-ease) 0.6s;
  will-change: opacity, transform;
}

.visible .venue-name,
.visible .venue-address,
.visible .map-embed-wrapper,
.visible .venue-direction-btn,
.venue-card.visible .venue-name,
.venue-card.visible .venue-address,
.venue-card.visible .map-embed-wrapper,
.venue-card.visible .venue-direction-btn {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* ========================================================
   7. SECTION 5: LỊCH TRÌNH NGÀY CƯỚI (TIMELINE)
   ======================================================== */
.timeline-card {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.timeline-card.visible,
.visible .timeline-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Các mục timeline trượt so le từ 2 bên (-85px và +85px) */
.timeline-item:nth-child(odd) {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide)));
  transition: opacity var(--reveal-duration) var(--reveal-ease),
              transform var(--reveal-duration) var(--reveal-ease);
  will-change: opacity, transform;
}

.timeline-item:nth-child(even) {
  opacity: 0;
  transform: translateX(var(--slide-distance-wide));
  transition: opacity var(--reveal-duration) var(--reveal-ease),
              transform var(--reveal-duration) var(--reveal-ease);
  will-change: opacity, transform;
}

.timeline-card.visible .timeline-item:nth-child(1),
.visible .timeline-item:nth-child(1),
.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.2s;
}

.timeline-card.visible .timeline-item:nth-child(2),
.visible .timeline-item:nth-child(2) {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.35s;
}

.timeline-card.visible .timeline-item:nth-child(3),
.visible .timeline-item:nth-child(3) {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.5s;
}

.timeline-card.visible .timeline-item:nth-child(4),
.visible .timeline-item:nth-child(4) {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.65s;
}

.timeline-card.visible .timeline-item:nth-child(n+5),
.visible .timeline-item:nth-child(n+5) {
  opacity: 1;
  transform: translateX(0);
  transition-delay: 0.8s;
}

/* ========================================================
   8. SECTION 6: ĐỒNG HỒ ĐẾM NGƯỢC (COUNTDOWN)
   ======================================================== */
.countdown-card {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.countdown-card.visible,
.visible .countdown-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.countdown-heart-icon {
  opacity: 0;
  transform: scale(0.3) rotate(-25deg);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.15s,
              transform var(--reveal-duration) var(--reveal-ease) 0.15s;
}

/* 4 hộp số bay vào từ 2 bên */
.countdown-grid .count-box:nth-child(1) {
  opacity: 0;
  transform: translateX(-80px) translateY(15px) scale(0.8);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.25s,
              transform var(--reveal-duration) var(--reveal-ease) 0.25s;
  will-change: opacity, transform;
}

.countdown-grid .count-box:nth-child(2) {
  opacity: 0;
  transform: translateX(-35px) translateY(25px) scale(0.8);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.4s,
              transform var(--reveal-duration) var(--reveal-ease) 0.4s;
  will-change: opacity, transform;
}

.countdown-grid .count-box:nth-child(3) {
  opacity: 0;
  transform: translateX(35px) translateY(25px) scale(0.8);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.55s,
              transform var(--reveal-duration) var(--reveal-ease) 0.55s;
  will-change: opacity, transform;
}

.countdown-grid .count-box:nth-child(4) {
  opacity: 0;
  transform: translateX(80px) translateY(15px) scale(0.8);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.7s,
              transform var(--reveal-duration) var(--reveal-ease) 0.7s;
  will-change: opacity, transform;
}

.countdown-card.visible .count-box,
.visible .count-box {
  opacity: 1;
  transform: translate(0) scale(1);
}

.countdown-quote {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.85s,
              transform var(--reveal-duration) var(--reveal-ease) 0.85s;
}

.visible .countdown-heart-icon,
.visible .countdown-quote,
.countdown-card.visible .countdown-heart-icon,
.countdown-card.visible .countdown-quote {
  opacity: 1;
  transform: translate(0) scale(1) rotate(0deg);
}

/* ========================================================
   9. SECTION 7: DRESS CODE & LOVE STORY
   ======================================================== */
.dresscode-card,
.story-banner {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.dresscode-card.visible,
.story-banner.visible,
.visible .dresscode-card,
.visible .story-banner {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.dresscode-icon-wrap {
  opacity: 0;
  transform: scale(0.3) rotate(-25deg);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
}

.dresscode-note {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
}

.dresscode-palettes {
  opacity: 0;
  transform: translateY(25px) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.5s,
              transform var(--reveal-duration) var(--reveal-ease) 0.5s;
}

.story-banner blockquote {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-medium)));
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.3s,
              transform var(--reveal-duration) var(--reveal-ease) 0.3s;
  will-change: opacity, transform;
}

.story-banner a {
  opacity: 0;
  transform: translateX(var(--slide-distance-medium)) scale(0.9);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.55s,
              transform var(--reveal-duration) var(--reveal-ease) 0.55s;
  will-change: opacity, transform;
}

.visible .dresscode-icon-wrap,
.visible .dresscode-note,
.visible .dresscode-palettes,
.visible .story-banner blockquote,
.visible .story-banner a,
.dresscode-card.visible .dresscode-icon-wrap,
.dresscode-card.visible .dresscode-note,
.dresscode-card.visible .dresscode-palettes,
.story-banner.visible blockquote,
.story-banner.visible a {
  opacity: 1;
  transform: translate(0) scale(1) rotate(0deg);
}

/* ========================================================
   10. SECTION 8: SỔ LƯU BÚT (GUESTBOOK)
   ======================================================== */
.guestbook-card {
  opacity: 0;
  transform: translateY(40px) scale(0.95);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.guestbook-card .form-input {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide)));
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.25s,
              transform var(--reveal-duration) var(--reveal-ease) 0.25s;
  will-change: opacity, transform;
}

.guestbook-card .form-textarea {
  opacity: 0;
  transform: translateX(calc(-1 * var(--slide-distance-wide)));
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.4s,
              transform var(--reveal-duration) var(--reveal-ease) 0.4s;
  will-change: opacity, transform;
}

.guestbook-actions {
  opacity: 0;
  transform: translateX(var(--slide-distance-medium)) scale(0.88);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.55s,
              transform var(--reveal-duration) var(--reveal-ease) 0.55s;
  will-change: opacity, transform;
}

.guestbook-card.visible,
.visible .guestbook-card {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.visible .guestbook-card .form-input,
.visible .guestbook-card .form-textarea,
.visible .guestbook-actions,
.guestbook-card.visible .form-input,
.guestbook-card.visible .form-textarea,
.guestbook-card.visible .guestbook-actions {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* Danh sách lời chúc: Chặn tuyệt đối thanh cuộn ngang */
.wishes-list {
  opacity: 0;
  transform: translateY(35px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
  overflow-x: hidden !important;
}

.wishes-list::-webkit-scrollbar:horizontal {
  display: none !important;
  height: 0px !important;
}

.wishes-list.visible,
.visible .wishes-list {
  opacity: 1;
  transform: translateY(0);
}

.wish-item {
  opacity: 0;
  transform: translateY(28px) scale(0.96);
  transition: opacity var(--reveal-duration) var(--reveal-ease),
              transform var(--reveal-duration) var(--reveal-ease);
  will-change: opacity, transform;
}

.wishes-list.visible .wish-item:nth-child(1),
.visible .wish-item:nth-child(1),
.wish-item.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.15s;
}

.wishes-list.visible .wish-item:nth-child(2),
.visible .wish-item:nth-child(2) {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.3s;
}

.wishes-list.visible .wish-item:nth-child(3),
.visible .wish-item:nth-child(3) {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.45s;
}

.wishes-list.visible .wish-item:nth-child(4),
.visible .wish-item:nth-child(4) {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.6s;
}

.wishes-list.visible .wish-item:nth-child(n+5),
.visible .wish-item:nth-child(n+5) {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition-delay: 0.75s;
}

/* ========================================================
   11. SECTION 9: HỘP MỪNG CƯỚI (GIFT BOX)
   ======================================================== */
.gift-wrapper {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.1s,
              transform var(--reveal-duration) var(--reveal-ease) 0.1s;
  will-change: opacity, transform;
}

.gift-flower-right {
  opacity: 0;
  transform: translateX(100px) scale(0.75);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

.gift-envelope-trigger {
  opacity: 0;
  transform: translateY(35px) scale(0.85);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.25s,
              transform var(--reveal-duration) var(--reveal-ease) 0.25s;
  will-change: opacity, transform;
}

.gift-wrapper.visible,
.gift-section.visible .gift-wrapper,
.visible .gift-wrapper {
  opacity: 1;
  transform: translateY(0);
}

.visible .gift-flower-right,
.visible .gift-envelope-trigger,
.gift-section.visible .gift-flower-right,
.gift-section.visible .gift-envelope-trigger {
  opacity: 1;
  transform: translate(0) scale(1);
}

/* ========================================================
   12. FOOTER
   ======================================================== */
footer {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.2s,
              transform var(--reveal-duration) var(--reveal-ease) 0.2s;
  will-change: opacity, transform;
}

footer .gift-thankyou-text,
footer .gift-brand-footer {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--reveal-duration) var(--reveal-ease) 0.35s,
              transform var(--reveal-duration) var(--reveal-ease) 0.35s;
}

footer.visible,
.visible footer {
  opacity: 1;
  transform: translateY(0);
}

footer.visible .gift-thankyou-text,
footer.visible .gift-brand-footer,
.visible footer .gift-thankyou-text,
.visible footer .gift-brand-footer {
  opacity: 1;
  transform: translateY(0);
}

footer.visible .gift-brand-footer,
.visible footer .gift-brand-footer {
  transition-delay: 0.12s;
  opacity: 0.55;
}