/* ============================================================
   invite.css — Thiệp cưới A "Thanh lịch" · phiên bản responsive
   Đẹp trên cả desktop và điện thoại (mobile-first + clamp)
   ============================================================ */

.m-root { background: var(--cream); color: var(--ink); font-family: var(--sans); overflow-x: hidden; }

/* ---- Scroll progress ---- */
.m-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0;
  background: var(--sage-deep); z-index: 130; transition: width .1s linear;
}

/* ---- Sections full-bleed + inner wrap ---- */
.sec { padding: clamp(58px, 9vw, 120px) 0; }
.sec--paper { background: var(--paper); }
.sec--mist  { background: var(--sage-mist); }
.sec--deep  { background: var(--sage-deep); color: var(--cream); }
.wrap { width: 100%; max-width: 680px; margin: 0 auto; padding: 0 clamp(24px, 6vw, 52px); }
.wrap--narrow { max-width: 580px; }
.center { text-align: center; }

/* ---- Type scale ---- */
.m-names { font-family: var(--serif); font-weight: 500; line-height: 1.04; margin: 0; }
.m-names .ln { display: block; font-size: clamp(50px, 13vw, 100px); white-space: nowrap; }
.m-amp { display: block; font-style: italic; color: var(--sage); font-size: clamp(22px, 5vw, 38px); margin: .08em 0; }
.m-title { font-family: var(--serif); font-weight: 500; line-height: 1.16; margin: 0; font-size: clamp(30px, 6vw, 52px); }
.m-quote { font-family: var(--serif); font-style: italic; line-height: 1.5; margin: 0; font-size: clamp(21px, 4.4vw, 33px); text-wrap: pretty; }
.m-body  { font-size: clamp(14.5px, 2.3vw, 17.5px); line-height: 1.95; color: var(--ink-soft); text-wrap: pretty; }
.m-eyebrow { font-family: var(--sans); font-weight: 500; font-size: clamp(10px, 1.8vw, 12px); letter-spacing: .34em; text-transform: uppercase; color: var(--sage-deep); }

/* ---- Hero ---- */
.hero { min-height: 100svh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: clamp(44px, 7vh, 90px) clamp(24px, 6vw, 52px); position: relative; }
.hero-mono { width: clamp(54px, 8vw, 72px); height: clamp(54px, 8vw, 72px); border-radius: 50%; border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; font-family: var(--serif); font-size: clamp(18px, 3vw, 24px); color: var(--sage-deep); }
.hero-photo { width: min(74vw, 320px); height: min(96vw, 420px); border-radius: 50% 50% 8px 8px / 56% 56% 8px 8px; }
/* Ảnh chính lớn — khung vòm */
.hero-photo-arch { overflow: hidden; border: 1px solid var(--line); border-radius: 50% 50% 12px 12px / 44% 44% 12px 12px; box-shadow: var(--shadow-soft); }
.hero-photo--xl { width: min(88vw, 540px); height: min(122vw, 668px); }
.scroll-cue { display: flex; flex-direction: column; align-items: center; gap: 8px; color: var(--ink-faint); }
.scroll-cue svg { animation: bob 1.8s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ---- Full-bleed cinematic band (điểm nhấn) ---- */
.band { position: relative; width: 100%; height: clamp(300px, 58vh, 620px); overflow: hidden; }
.band image-slot { display: block; width: 100%; height: 100%; }
.band__veil { position: absolute; inset: 0; pointer-events: none; z-index: 2; background: linear-gradient(to bottom, rgba(40,42,34,.12) 0%, rgba(40,42,34,0) 34%, rgba(40,42,34,0) 50%, rgba(40,42,34,.55) 100%); }
.band__cap { position: absolute; inset: 0; z-index: 3; pointer-events: none; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; text-align: center; color: #fff; padding: clamp(24px,5vw,48px); padding-bottom: clamp(28px,5vw,52px); }
.band__cap .lab { font-family: var(--sans); font-weight: 500; font-size: clamp(10px,1.8vw,12px); letter-spacing: .36em; text-transform: uppercase; opacity: .94; }
.band__cap .big { font-family: var(--serif); font-style: italic; font-weight: 500; font-size: clamp(26px,5.4vw,52px); margin: clamp(10px,1.6vw,16px) 0 0; line-height: 1.16; text-shadow: 0 2px 30px rgba(0,0,0,.45); text-wrap: balance; }
.band__cap .sub { font-family: var(--serif); font-size: clamp(14px,2.4vw,19px); letter-spacing: .14em; margin-top: 12px; opacity: .96; text-shadow: 0 1px 18px rgba(0,0,0,.4); }

/* ---- Hairline label ---- */
.label-rule { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-bottom: clamp(26px, 4vw, 40px); }

/* ---- Family ---- */
.family { display: grid; grid-template-columns: 1fr auto 1fr; align-items: start; gap: clamp(16px, 4vw, 40px); }
.family .vline { width: 1px; align-self: stretch; background: var(--line-soft); justify-self: center; }
.family .name { font-family: var(--serif); font-size: clamp(17px, 2.6vw, 22px); color: var(--ink); margin: 0 0 7px; line-height: 1.35; }

/* ---- Countdown ---- */
.cd { display: flex; justify-content: center; align-items: flex-start; gap: clamp(8px, 4vw, 40px); }
.cd-cell { display: flex; flex-direction: column; align-items: center; min-width: clamp(54px, 14vw, 92px); }
.cd-num { font-family: var(--serif); font-weight: 500; line-height: 1; font-size: clamp(42px, 12vw, 78px); font-variant-numeric: tabular-nums; }
.cd-lab { margin-top: 10px; }

/* ---- Events ---- */
.events { display: grid; grid-template-columns: 1fr; gap: clamp(16px, 2.4vw, 22px); }
@media (min-width: 600px) { .events { grid-template-columns: 1fr 1fr; } }
.event-card { border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: clamp(26px, 4vw, 38px) clamp(18px, 3vw, 28px); background: var(--cream); text-align: center; }
.event-time { font-family: var(--serif); font-weight: 500; font-size: clamp(40px, 8vw, 60px); color: var(--sage-deep); margin: 0 0 6px; line-height: 1; }

/* ---- Slideshow album ---- */
.slideshow { position: relative; width: 100%; max-width: 720px; margin: 0 auto; }
.slideshow__stage {
  position: relative; width: 100%;
  aspect-ratio: 4 / 5;
  max-height: 80vh;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  background: var(--sage-mist);
}
.slide {
  position: absolute; inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 1.2s cubic-bezier(.4,0,.2,1), transform 6s ease-out;
  pointer-events: none;
}
.slide.is-active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}
.slide image-slot { width: 100%; height: 100%; display: block; }
.slide image-slot img { animation: none !important; opacity: 1 !important; }
.slide.is-active image-slot img { animation: slideKenBurns 6s ease-out forwards !important; }
@keyframes slideKenBurns {
  0%   { transform: scale(1.02); }
  100% { transform: scale(1.08); }
}

/* Nav buttons */
.slide-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(92,106,78,.2);
  color: var(--sage-deep);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 3;
  opacity: 0; transition: opacity .35s ease, background .25s ease;
}
.slideshow:hover .slide-nav { opacity: 1; }
.slide-nav:hover { background: var(--sage-deep); color: #fff; border-color: var(--sage-deep); }
.slide-nav--prev { left: clamp(10px, 2vw, 20px); }
.slide-nav--next { right: clamp(10px, 2vw, 20px); }
@media (max-width: 640px) { .slide-nav { opacity: 1; width: 38px; height: 38px; } }

/* Counter */
.slide-counter {
  position: absolute; top: 16px; right: 18px; z-index: 3;
  font-family: var(--sans); font-size: 11px; letter-spacing: .2em;
  color: #fff; padding: 6px 12px; border-radius: 999px;
  background: rgba(40,42,34,.45); backdrop-filter: blur(6px);
  font-variant-numeric: tabular-nums;
}

/* Dots */
.slide-dots {
  display: flex; justify-content: center; gap: 10px;
  margin-top: clamp(18px, 2.4vw, 26px);
}
.slide-dots .dot {
  width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid var(--line);
  background: transparent;
  padding: 0; cursor: pointer;
  transition: all .35s ease;
}
.slide-dots .dot.is-active {
  background: var(--sage-deep);
  border-color: var(--sage-deep);
  width: 28px; border-radius: 999px;
}
.slide-dots .dot:hover:not(.is-active) { background: var(--sage-soft); }

/* ---- Button ---- */
.m-btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; font-family: var(--sans); font-size: clamp(11px, 1.8vw, 13px); letter-spacing: .2em; text-transform: uppercase; cursor: pointer; border: 1px solid var(--line); padding: clamp(13px, 2vw, 17px) clamp(24px, 4vw, 36px); border-radius: 999px; background: transparent; color: var(--sage-deep); text-decoration: none; transition: all .3s ease; }
.m-btn:hover { background: var(--sage-deep); color: #fff; border-color: var(--sage-deep); }
.m-btn--solid { background: var(--sage-deep); color: #fff; border-color: var(--sage-deep); }
.m-btn--solid:hover { background: var(--ink); border-color: var(--ink); }

/* ---- Map ---- */
.map-frame { position: relative; height: clamp(220px, 36vw, 380px); border-radius: var(--r-md); overflow: hidden; border: 1px solid var(--line); background: var(--sage-mist); }
.map-frame iframe { width: 100%; height: 100%; border: 0; filter: grayscale(.35) saturate(.85) contrast(.95); }

/* ---- Cover ---- */
.cover { position: fixed; inset: 0; z-index: 200; background: radial-gradient(120% 80% at 50% 0%, var(--sage-mist), var(--cream) 60%); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: clamp(28px, 6vw, 56px); transition: opacity 1s ease, transform 1.1s cubic-bezier(.7,0,.2,1); }
.cover.is-open { opacity: 0; transform: translateY(-32px); pointer-events: none; }
body.locked { overflow: hidden; }

/* ============================================================
   IMAGE MOTION — chuyển động điện ảnh, nhẹ nhàng & sang trọng
   ============================================================ */

/* Fade-in mượt khi ảnh tải xong (mặc định cho mọi ô ảnh) */
image-slot img {
  opacity: 0;
  animation: imgFadeIn 1.4s ease-out forwards;
  will-change: transform;
}
@keyframes imgFadeIn { to { opacity: 1; } }

/* ---- Ken Burns: ảnh chính hero — zoom + pan rất chậm, 26s ---- */
.hero-photo-arch image-slot img {
  animation: imgFadeIn 1.4s ease-out forwards, kenBurnsHero 26s ease-in-out 1.4s infinite alternate;
  transform-origin: 50% 42%;
}
@keyframes kenBurnsHero {
  0%   { transform: scale(1.01) translate(0, 0); }
  100% { transform: scale(1.09) translate(-1.6%, -2.2%); }
}

/* ---- Band ảnh full-bleed — pan ngang điện ảnh, 32s ---- */
.band image-slot img {
  animation: imgFadeIn 1.4s ease-out forwards, bandPan 32s ease-in-out 1.4s infinite alternate;
  transform-origin: 50% 50%;
}
@keyframes bandPan {
  0%   { transform: scale(1.06) translate(-1.8%, 0); }
  100% { transform: scale(1.12) translate(1.8%, -1.2%); }
}

/* Band: caption chạy parallax (transform do JS ghi) — chỉ thêm transition mềm
   khi đứng yên, tránh giật ở khung hình đầu */
.band__cap { transition: none; }
.band__veil { transition: opacity .8s ease; }

/* ---- Hero arch: trôi nổi lên xuống rất nhẹ, 8s ---- */
.hero-photo-arch { animation: floatY 8s ease-in-out infinite; }
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

/* ---- Sprig botanical: nhành lá khẽ đung đưa (sway) ---- */
.sprig { transform: scaleX(var(--sprig-flip, 1)); }
.sprig--sway {
  transform-origin: 50% 92%;
  animation: sprigSway 6.5s ease-in-out infinite;
}
@keyframes sprigSway {
  0%, 100% { transform: scaleX(var(--sprig-flip, 1)) rotate(-2deg); }
  50%      { transform: scaleX(var(--sprig-flip, 1)) rotate(2deg); }
}

/* ---- Cánh hoa rơi (petals) — lớp phủ dịu nhẹ toàn trang ---- */
.petals { position: fixed; inset: 0; z-index: 110; pointer-events: none; overflow: hidden; }
.petal {
  position: absolute; top: -6%;
  border-radius: 80% 0 60% 0;
  filter: blur(.2px);
  animation-name: petalFall;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  will-change: transform;
}
@keyframes petalFall {
  0%   { transform: translate3d(0, -10vh, 0) rotate(0deg); }
  100% { transform: translate3d(var(--drift, 30px), 112vh, 0) rotate(var(--rot, 180deg)); }
}

/* ---- RSVP ---- */
.rsvp-form { display: flex; flex-direction: column; gap: 14px; text-align: left; }
.rsvp-input {
  font-family: var(--sans); font-size: 15px; color: var(--ink);
  padding: 14px 16px; border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--cream); width: 100%; outline: none;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.rsvp-input:focus { border-color: var(--sage-deep); box-shadow: 0 0 0 3px rgba(92,106,78,.12); }
.rsvp-row { display: flex; gap: 12px; flex-wrap: wrap; }
.rsvp-seg { display: flex; flex: 1; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; min-width: 220px; }
.rsvp-seg .seg {
  flex: 1; padding: 13px 10px; border: 0; background: var(--cream); cursor: pointer;
  font-family: var(--sans); font-size: 13px; color: var(--ink-soft); transition: all .25s ease;
}
.rsvp-seg .seg.is-on { background: var(--sage-deep); color: #fff; }
.rsvp-select { flex: 0 0 auto; min-width: 120px; cursor: pointer; }
.rsvp-done { animation: revealSoft .9s ease both; }
@keyframes revealSoft { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---- Sổ lưu bút (wishes) ---- */
.wishes { display: flex; flex-direction: column; gap: clamp(26px,4vw,38px); }
.wish-form { display: flex; flex-direction: column; gap: 12px; text-align: left; max-width: 520px; margin: 0 auto; width: 100%; }
.wish-text { resize: vertical; font-family: var(--sans); line-height: 1.6; }
.wish-list { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 640px) { .wish-list { grid-template-columns: 1fr 1fr; } }
.wish-card {
  border: 1px solid var(--line-soft); border-radius: var(--r-md);
  padding: clamp(18px,3vw,24px); background: var(--cream); text-align: left;
  box-shadow: var(--shadow-card);
}
.wish-msg { font-family: var(--serif); font-style: italic; font-size: clamp(15px,2.4vw,18px); color: var(--ink); line-height: 1.55; margin: 0 0 10px; text-wrap: pretty; }
.wish-name { font-family: var(--sans); font-size: 12px; letter-spacing: .12em; color: var(--sage-deep); margin: 0; }

/* ---- Tôn trọng "giảm chuyển động": thiệp tĩnh hoàn toàn ---- */
@media (prefers-reduced-motion: reduce) {
  image-slot img { animation: imgFadeIn 1s ease-out forwards !important; }
  .hero-photo-arch,
  .slide.is-active image-slot img,
  .petal,
  .sprig--sway { animation: none !important; }
  .petals { display: none; }
  .hero-photo-arch { transform: none !important; }
  .band__cap { transform: none !important; }
}