/* =====================================================================
   Thiệp cưới — giao diện một cột (lấy cảm hứng từ mẫu M-135)
   Đổi màu / font nhanh ở khối :root bên dưới.
   ===================================================================== */
:root {
  --page-bg: #cccccc;       /* nền hai bên cột nội dung */
  --paper: #ffffff;
  --paper-alt: #f9f9f9;     /* nền xen kẽ giữa các phần */
  --ink: #212529;
  --ink-soft: #474747;
  --muted: #808080;
  --line: #474747;          /* đường timeline */
  --accent: #df4758;        /* nút nổi, trái tim, nhạc */
  --btn: #636363;           /* nút xám */
  --btn-hover: #4b4b4b;
  --card: #f2f2f2;
  --form-bg: #d8d8d8;

  --font-body: "Bellota Text", "Segoe UI", system-ui, sans-serif;
  --font-script: "Bonheur Royale", "Great Vibes", cursive;
  --font-deco: "Great Vibes", "Bonheur Royale", cursive;

  --maxw: 575px;
  --radius: 6px;
}

/* ---------- Nền tảng ---------- */
*, *::before, *::after { box-sizing: border-box; }
/* Không đặt scroll-behavior: smooth ở đây: Chrome sẽ cuộn lệch trang khi mở <dialog>.
   Cuộn mượt cho link mục lục được xử lý trong app.js. */
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
html.modal-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; } /* height:auto để thuộc tính width/height không kéo méo khung ảnh */
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
b, strong { font-weight: 700; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrapper {
  position: relative;
  max-width: var(--maxw);
  min-height: 100vh;
  margin: 0 auto;
  background: var(--paper);
  overflow: hidden;
  overflow: clip;
  box-shadow: 0 0 40px rgba(0, 0, 0, .08);
}

/* ---------- Nút ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 16px;
  border: 1px solid var(--btn);
  border-radius: var(--radius);
  background: var(--btn);
  color: #fff;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.2;
  text-decoration: none;
  transition: background .2s, border-color .2s, transform .2s;
}
.btn:hover { background: var(--btn-hover); border-color: var(--btn-hover); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .6; cursor: progress; }
.btn--sm { min-height: 32px; padding: 5px 10px; font-size: 13px; border-radius: 4px; gap: 6px; }
.btn--block { width: 100%; }
.btn--accent { background: var(--accent); border-color: var(--accent); }
.btn--accent:hover { background: #c93a4b; border-color: #c93a4b; }
.icon-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
}
.icon-btn:hover { background: rgba(0, 0, 0, .05); }

/* ---------- Khung section ---------- */
.section { position: relative; padding: 56px 20px; background: var(--paper); }
.section, .hero { scroll-margin-top: 52px; }
.section--alt { background: var(--paper-alt); }
.section__title {
  margin: 0;
  font-family: var(--font-script);
  font-weight: 400;
  font-size: 2.8rem;
  line-height: 1.2;
  text-align: center;
  color: var(--ink-soft);
}
.section__sub {
  max-width: 30em;
  margin: 8px auto 28px;
  font-size: 1.1rem;
  text-align: center;
}
.section__title + :not(.section__sub) { margin-top: 28px; }
.center { margin-top: 20px; text-align: center; }

/* ---------- Ảnh bìa ---------- */
.hero { padding: 16px 16px 8px; background: var(--paper); }
.hero__date {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 7% 16px 0;
  color: #3d3d3d;
}
.hero__we { align-self: flex-end; margin: 0 0 .3em; font-size: 1.1rem; }
.hero__soon { align-self: center; margin: 0; font-size: 1.1rem; }
.hero__nums {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  font-size: 70px;
  font-weight: 300;
  line-height: 1;
  color: #c6c6c6;
}
.hero__nums span:first-child { padding-bottom: 4px; border-bottom: 1px solid #c6c6c6; }
.hero__nums span:last-child { padding-top: 4px; }
.hero__photo { position: relative; margin: 8px 0 0; }
.hero__photo img { width: 100%; aspect-ratio: 2 / 3; object-fit: cover; }
.hero__script {
  position: absolute;
  left: 18px;
  bottom: -.45em;
  font-family: var(--font-deco);
  font-size: clamp(76px, 20vw, 108px);
  line-height: 1;
  color: #2f2f2f;
  text-shadow: 0 0 18px rgba(255, 255, 255, .9), 0 0 4px rgba(255, 255, 255, .8);
  pointer-events: none;
}
.hero__names {
  margin: 0;
  padding: 64px 40px 12px;
  font-size: 22px;
  font-weight: 300;
  letter-spacing: .02em;
}
.hero__names small { margin: 0 .2em; font-size: .875em; }
.hero__guest {
  margin: 8px 40px 16px;
  padding: 14px 16px;
  border: 1px dashed #c6c6c6;
  border-radius: var(--radius);
  text-align: center;
  font-size: 1rem;
}
.hero__guest strong {
  display: block;
  font-family: var(--font-script);
  font-weight: 400;
  font-size: 2.2rem;
  line-height: 1.2;
  color: var(--accent);
}

/* ---------- Hàng nút nhanh ---------- */
.quick { padding: 24px 16px; background: var(--paper); }
.quick__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.quick__row .btn { padding: 8px; }

/* ---------- Video ---------- */
.video {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius);
  background: #111;
}
.video img { width: 100%; height: 100%; object-fit: cover; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video video { display: block; width: 100%; height: 100%; object-fit: contain; background: #000; }
/* Video dọc: khung dọc, không cao quá màn hình */
.video--portrait { width: min(100%, calc(82vh * var(--vr, .5625))); margin-inline: auto; }
.video__play {
  position: absolute;
  inset: 0;
  width: 72px;
  height: 72px;
  margin: auto;
  border: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 10px rgba(255, 255, 255, .3);
  transition: transform .25s;
}
.video__play:hover { transform: scale(1.08); }
.video__play svg { margin-left: 4px; }

/* ---------- Album (masonry) ---------- */
.masonry { column-count: 2; column-gap: 8px; }
.masonry__item {
  display: block;
  width: 100%;
  margin: 0 0 8px;
  padding: 0;
  border: 0;
  overflow: hidden;
  background: #eee;
  break-inside: avoid;
  cursor: zoom-in;
}
.masonry__item img { width: 100%; height: auto; transition: transform .6s ease; }
.masonry__item:hover img { transform: scale(1.05); }

/* ---------- Lịch & đếm ngược ---------- */
.cal { max-width: 420px; margin: 0 auto; }
.cal table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.cal caption {
  padding: 4px 0 14px;
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.cal th {
  padding: 8px 0;
  border-bottom: 1px solid #2a2a2d;
  font-size: .95rem;
  font-weight: 400;
  color: var(--ink-soft);
}
.cal td { height: 42px; text-align: center; font-size: .95rem; color: var(--muted); }
.cal__day {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 36px;
  color: #fff;
  font-weight: 700;
}
.cal__day svg { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--accent); animation: beat 1.6s ease-in-out infinite; }
.cal__day span { position: relative; margin-top: -2px; }
.date__line { margin: 18px 0 0; text-align: center; font-size: 1.05rem; color: var(--ink-soft); }
.countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 460px;
  margin: 24px auto 0;
  text-align: center;
  color: var(--ink-soft);
}
.countdown b { display: block; font-size: 48px; font-weight: 300; line-height: 1.1; font-variant-numeric: tabular-nums; }
.countdown span { font-size: 1.05rem; }
.countdown__done { margin: 20px 0 0; text-align: center; font-family: var(--font-script); font-size: 2rem; color: var(--accent); }

/* ---------- Chuyện tình yêu (timeline zig-zag) ---------- */
.timeline { padding: 0 4px; }
.tl { position: relative; padding: 30px 24px; }
.tl::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 50%;
  border: 3px solid var(--line);
  pointer-events: none;
}
.tl:nth-child(odd)::before { left: 0; top: -3px; bottom: -3px; border-right: 0; border-radius: 50px 0 0 50px; }
.tl:nth-child(even)::before { right: 0; border-left: 0; border-radius: 0 50px 50px 0; }
.tl:first-child::before { top: 0; border-top: 0; border-top-left-radius: 0; }
.tl:last-child:nth-child(odd)::before { bottom: 0; border-bottom: 0; border-bottom-left-radius: 0; }
.tl:last-child:nth-child(even)::before { border-bottom: 0; border-bottom-right-radius: 0; }
.tl:first-child { padding-top: 0; }
.tl__info { position: relative; display: flex; flex-direction: column; gap: 10px; padding: 0 12px; }
.tl:nth-child(even) .tl__info { text-align: right; }
.tl__date { font-size: 1rem; }
.tl__title { position: relative; margin: 0; font-size: 1.4rem; font-weight: 300; line-height: 1.35; color: var(--ink-soft); }
.tl__title::before {
  content: "";
  position: absolute;
  top: .3em;
  width: 15px;
  height: 15px;
  border: 3px solid var(--line);
  border-radius: 50%;
  background: var(--paper);
  box-sizing: content-box;
}
/* chấm tròn nằm đúng tâm đường kẻ 3px: -(padding .tl + padding .tl__info + 10.5px) + 1.5px */
.tl:nth-child(odd) .tl__title::before { left: -45px; }
.tl:nth-child(even) .tl__title::before { right: -45px; }
.tl__text { margin: 0; }
.tl__img { overflow: hidden; border-radius: 20px; }
.tl__img img { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* ---------- Lời ngỏ ---------- */
.letter__title { margin: 0; font-size: 2.7rem; font-weight: 300; text-align: center; color: #000; }
.letter__text {
  max-width: 380px;
  margin: 36px auto;
  font-size: 1.1rem;
  line-height: 1.85;
  text-align: center;
  white-space: pre-line;
  color: #000;
}
.letter__photo { margin: 0; }
.letter__photo img { width: 100%; aspect-ratio: 5 / 7; object-fit: cover; }
.letter__sign { margin-top: 40px; text-align: center; font-family: var(--font-script); }
.letter__sign p { margin: 0; font-size: 1.5rem; line-height: 1.5; color: #949494; }
.letter__sign span { margin-left: .15em; font-size: 2.5rem; color: #000; }

/* ---------- Sự kiện ---------- */
.events { display: flex; flex-direction: column; gap: 16px; }
.event { display: flex; min-height: 190px; overflow: visible; border-radius: var(--radius); background: var(--card); }
.event__media { position: relative; flex: 0 0 36%; overflow: hidden; border-radius: var(--radius) 0 0 var(--radius); background: #ddd; }
.event__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.event__dress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  gap: 5px;
  padding: 5px 4px;
  background: rgba(246, 246, 246, .75);
}
.event__dress i { width: 22px; height: 22px; border-radius: 50%; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .12); }
.event__dress::before {
  content: "Dress code";
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translateX(-50%);
  padding: 2px 8px;
  border-radius: 4px 4px 0 0;
  background: rgba(246, 246, 246, .75);
  font-size: 11px;
  letter-spacing: .04em;
  white-space: nowrap;
}
.event__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; padding: 16px; }
.event__title { margin: 0; font-size: 1.1rem; font-weight: 400; letter-spacing: .04em; text-transform: uppercase; }
.event__time, .event__place { display: flex; gap: 6px; align-items: flex-start; margin: 0; }
.event__time svg, .event__place svg { flex: 0 0 auto; margin-top: 3px; color: var(--muted); }
.event__lunar { margin: -2px 0 0 22px; font-size: .9rem; font-style: italic; color: var(--muted); }
.event__actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 6px; }

/* Thêm vào lịch */
.atc { position: relative; }
.atc summary { list-style: none; }
.atc summary::-webkit-details-marker { display: none; }
.atc__menu {
  position: absolute;
  z-index: 5;
  top: calc(100% + 6px);
  left: 0;
  min-width: 190px;
  padding: 6px;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
}
.atc__menu a, .atc__menu button {
  display: block;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 6px;
  background: none;
  font-size: 14px;
  text-align: left;
  text-decoration: none;
}
.atc__menu a:hover, .atc__menu button:hover { background: #f3f3f3; }

/* ---------- Cô dâu & chú rể ---------- */
.member { margin: 0 0 56px; text-align: center; }
.member:last-child { margin-bottom: 0; }
.member__photo {
  width: min(72%, 300px);
  aspect-ratio: 3 / 4;
  margin: 0 auto 20px;
  overflow: hidden;
  border-radius: 50%;
  box-shadow: 0 0 0 8px var(--paper), 0 0 0 9px #d9d9d9;
  animation: float 6s ease-in-out infinite;
}
.member:nth-child(2) .member__photo { animation-delay: -3s; }
.member__photo img { width: 100%; height: 100%; object-fit: cover; }
.member__role { margin: 0 0 6px; font-size: .85rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.member__parents { line-height: 1.7; }
.member__bio {
  margin: 12px 0 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}
.member__bio.is-open { display: block; }
.member__more { margin: 2px 0 0; padding: 4px 8px; border: 0; background: none; font-weight: 700; }
.member__foot { display: flex; justify-content: center; align-items: center; gap: 10px; margin-top: 8px; }
.member__name { font-family: var(--font-script); font-size: 2rem; line-height: 1.3; color: var(--ink-soft); }
.socials { display: flex; gap: 10px; margin: 0; padding: 0; list-style: none; }
.socials a { display: grid; place-items: center; width: 24px; height: 24px; color: var(--ink-soft); transition: color .2s; }
.socials a:hover { color: var(--accent); }

/* ---------- Phù dâu & phù rể ---------- */
.party { display: grid; grid-template-columns: 1fr 1fr; gap: 36px 16px; }
.person { text-align: center; }
.person__avatar { width: 75%; aspect-ratio: 1; margin: 0 auto 14px; overflow: hidden; border-radius: 50%; }
.person__avatar img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.person:hover .person__avatar img { transform: scale(1.06); }
.person__name { margin: 0; font-size: 1.35rem; font-weight: 300; line-height: 1.3; }
.person__role { margin: 2px 0 6px; font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.person__bio { margin: 0; font-size: 1rem; }

/* ---------- Hộp mừng cưới ---------- */
.gifts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.gifts--single { grid-template-columns: minmax(0, 300px); justify-content: center; }
.gift {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  padding: 16px 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  text-align: center;
}
.gift__label { margin-bottom: 10px; font-size: 1.05rem; font-weight: 400; letter-spacing: .03em; text-transform: uppercase; }
.gift__qr {
  width: 100%;
  max-width: 160px;
  aspect-ratio: 1;
  margin: 0 auto 12px;
  padding: 4px;
  border: 1px solid #ccc;
  background: #fff;
  object-fit: contain;
}
.gift p { width: 100%; margin: 0 0 4px; font-size: .95rem; line-height: 1.45; overflow-wrap: anywhere; }
.gift p b { display: block; font-weight: 700; }
.gift .btn { margin-top: 8px; }

/* ---------- Sổ lưu bút ---------- */
.wish-form { padding: 22px; background: var(--form-bg); }
.form-row { display: flex; gap: 12px; margin-bottom: 12px; }
.form-row > * { flex: 1; min-width: 0; }
.field {
  display: block;
  width: 100%;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: #fff;
  font-size: 15px;
  font-weight: 400;
}
.field:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(223, 71, 88, .15); }
textarea.field { min-height: 110px; resize: vertical; }
.emoji-bar { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px 0 12px; }
.emoji-bar button {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .7);
  font-size: 17px;
  line-height: 1;
}
.emoji-bar button:hover { background: #fff; }
.hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form-msg { margin: 10px 0 0; font-size: 14px; font-weight: 400; text-align: center; }
.form-msg:empty { display: none; }
.form-msg.is-error { color: #b3261e; }
.wish-list {
  max-height: 440px;
  margin-top: 24px;
  padding: 4px 16px;
  overflow-y: auto;
  border: 1px solid #ececec;
  border-radius: var(--radius);
  overscroll-behavior: contain;
}
.wish { padding: 12px 0; border-bottom: 1px solid #efefef; }
.wish:last-child { border-bottom: 0; }
.wish__head { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.wish__head b { font-size: 15px; }
.wish__head time { flex: 0 0 auto; font-size: 12px; color: var(--muted); }
.wish p { margin: 4px 0 0; font-size: 15px; white-space: pre-line; overflow-wrap: anywhere; }
.wish.is-new { animation: flash 1.6s ease; }
.wish-empty { margin: 16px 0; text-align: center; color: var(--muted); }

/* ---------- Chân trang ---------- */
.footer { text-align: center; }
.footer__title { margin: 0; font-size: 2.6rem; font-weight: 300; color: var(--ink-soft); }
.footer__sub { margin: 6px 0 0; font-size: 1.1rem; color: var(--ink-soft); }

/* ---------- Thanh trên & mục lục ---------- */
.topbar {
  position: fixed;
  z-index: 45;
  top: 0;
  left: 50%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--maxw);
  padding: 4px 8px 4px 18px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 1px 8px rgba(0, 0, 0, .08);
  transform: translate(-50%, -110%);
  transition: transform .35s ease;
}
.topbar.is-visible { transform: translate(-50%, 0); }
.topbar__brand { font-family: var(--font-script); font-size: 1.9rem; line-height: 1.3; text-decoration: none; color: var(--ink-soft); }
.backdrop {
  position: fixed;
  z-index: 65;
  inset: 0;
  background: rgba(0, 0, 0, .4);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s;
}
.backdrop.is-open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed;
  z-index: 70;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(280px, 82vw);
  padding: 16px 20px;
  overflow-y: auto;
  background: #fff;
  box-shadow: -6px 0 30px rgba(0, 0, 0, .12);
  transform: translateX(105%);
  transition: transform .35s ease;
  visibility: hidden;
}
.drawer.is-open { transform: none; visibility: visible; }
.drawer__close { margin-left: auto; }
.drawer__title { margin: 0 0 12px; font-family: var(--font-script); font-size: 2rem; text-align: center; color: var(--ink-soft); }
.drawer__links { margin: 0; padding: 0; list-style: none; }
.drawer__links a { display: block; padding: 11px 4px; border-bottom: 1px solid #f0f0f0; text-decoration: none; }
.drawer__links a:hover { color: var(--accent); }

/* ---------- Nút nổi bên phải ---------- */
.fab {
  position: fixed;
  z-index: 40;
  right: max(14px, env(safe-area-inset-right));
  bottom: max(22px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}
.fab__items { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; transition: opacity .25s, transform .25s; }
.fab.is-collapsed .fab__items { opacity: 0; transform: translateY(20px) scale(.6); pointer-events: none; }
.fab__btn {
  position: relative;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(223, 71, 88, .4);
  transition: transform .2s;
}
.fab__btn:hover { transform: scale(1.08); }
.fab__label {
  position: absolute;
  top: 50%;
  right: 54px;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transform: translate(8px, -50%);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
}
.fab__btn:hover .fab__label, .fab__btn:focus-visible .fab__label, .fab__btn.is-peek .fab__label { opacity: 1; transform: translate(0, -50%); }
.shake > svg { animation: shake 2.8s ease-in-out infinite; }

/* ---------- Nhạc nền bên trái ---------- */
.player {
  position: fixed;
  z-index: 40;
  left: max(14px, env(safe-area-inset-left));
  bottom: max(22px, env(safe-area-inset-bottom));
  display: flex;
  align-items: center;
}
.player__btn {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(223, 71, 88, .4);
}
.player.is-playing .player__btn::after {
  content: "";
  position: absolute;
  inset: -6px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  animation: ripple 1.8s ease-out infinite;
}
.player__hint {
  margin-left: -16px;
  padding: 8px 14px 8px 24px;
  border: 1px solid rgba(223, 71, 88, .6);
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .12);
  font-size: 13px;
  font-weight: 400;
  white-space: nowrap;
  animation: fadeIn .5s ease;
}

/* ---------- Thông báo ---------- */
.toasts {
  position: fixed;
  z-index: 60;
  top: calc(12px + env(safe-area-inset-top));
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(330px, calc(100vw - 24px));
  pointer-events: none;
  transition: top .35s ease;
}
body.has-topbar .toasts { top: calc(64px + env(safe-area-inset-top)); }
.toast {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(247, 247, 251, .97);
  box-shadow: 0 8px 26px rgba(0, 0, 0, .14);
  font-size: 13px;
  line-height: 1.4;
  pointer-events: auto;
  animation: toastIn .4s ease;
}
.toast.is-leaving { animation: toastOut .35s ease forwards; }
.toast__icon { flex: 0 0 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: #fff; }
.toast--success .toast__icon { background: #3a9a5b; }
.toast--error .toast__icon { background: #c0392b; }
.toast__body { flex: 1; min-width: 0; }
.toast__body b { display: block; font-size: 13px; }
.toast__body p { margin: 2px 0 0; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
.toast__close { flex: 0 0 auto; width: 24px; height: 24px; padding: 0; border: 0; border-radius: 50%; background: none; color: var(--muted); display: grid; place-items: center; }
.toast__close:hover { background: rgba(0, 0, 0, .06); }

/* ---------- Hộp thoại ---------- */
.modal {
  width: min(480px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  padding: 30px 22px 24px;
  overflow-y: auto;
  border: 0;
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .3);
}
.modal[open] { animation: pop .28s ease; }
.modal::backdrop { background: rgba(20, 20, 20, .55); }
.modal__close { position: absolute; top: 8px; right: 8px; }
.modal__title { margin: 0; font-family: var(--font-script); font-size: 2.5rem; font-weight: 400; line-height: 1.2; text-align: center; color: var(--ink-soft); }
.modal__sub { margin: 6px 0 20px; text-align: center; font-size: 1rem; }
.modal .wish-form { padding: 0; background: none; }
.modal .field { border-color: #dcdcdc; }
.modal .emoji-bar button { background: #f2f2f2; }
.modal .gifts { margin-top: 4px; }
.lbl { display: block; margin-bottom: 12px; font-size: 14px; font-weight: 400; }
.lbl .field { margin-top: 5px; }
.choices { margin: 0 0 12px; padding: 0; border: 0; }
.choices legend { margin-bottom: 6px; padding: 0; font-size: 14px; font-weight: 400; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid #d6d6d6;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 400;
  cursor: pointer;
  transition: .2s;
}
.chip input:checked + span { border-color: var(--accent); background: var(--accent); color: #fff; }
.chip input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Xem ảnh lớn ---------- */
.lightbox {
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(12, 12, 12, .96);
  color: #fff;
  touch-action: pan-y;
}
.lightbox[open] { display: flex; align-items: center; justify-content: center; }
.lightbox::backdrop { background: transparent; }
.lightbox__img { max-width: 94vw; max-height: 86vh; max-height: 86dvh; object-fit: contain; user-select: none; -webkit-user-drag: none; animation: fadeIn .3s ease; }
.lightbox__btn {
  position: absolute;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: #fff;
}
.lightbox__btn:hover { background: rgba(255, 255, 255, .25); }
.lightbox__close { top: 14px; right: 14px; }
.lightbox__prev { left: 12px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 12px; top: 50%; transform: translateY(-50%); }
.lightbox__count { position: absolute; top: 24px; left: 20px; margin: 0; font-size: 14px; opacity: .85; }

/* ---------- Hiệu ứng rơi ---------- */
#fx { position: fixed; z-index: 50; inset: 0; width: 100%; height: 100%; pointer-events: none; }

/* ---------- Xuất hiện khi cuộn ---------- */
.js [data-reveal] { opacity: 0; transition: opacity .9s ease, transform .9s ease; }
.js [data-reveal="up"] { transform: translateY(40px); }
.js [data-reveal="left"] { transform: translateX(-60px); }
.js [data-reveal="right"] { transform: translateX(60px); }
.js [data-reveal="zoom"] { transform: scale(.92); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
/* Ảnh hiện dần khi tải xong (giữ cả hiệu ứng phóng to khi rê chuột) */
.js img.fade-in { opacity: 0; transition: opacity .8s ease, transform .6s ease; }
.js img.fade-in.is-loaded { opacity: 1; }

/* ---------- Lỗi cấu hình ---------- */
.config-error, .noscript { margin: 0; padding: 48px 24px; text-align: center; line-height: 1.7; }
.config-error code { padding: 2px 6px; border-radius: 4px; background: #f3f3f3; }

/* ---------- Chuyển động ---------- */
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes beat { 0%, 100% { transform: scale(1); } 15% { transform: scale(1.12); } 30% { transform: scale(1); } 45% { transform: scale(1.08); } }
@keyframes shake {
  0%, 60%, 100% { transform: rotate(0); }
  64% { transform: rotate(-14deg); } 68% { transform: rotate(12deg); }
  72% { transform: rotate(-10deg); } 76% { transform: rotate(8deg); } 80% { transform: rotate(0); }
}
@keyframes ripple { 0% { transform: scale(.9); opacity: .9; } 100% { transform: scale(1.5); opacity: 0; } }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes toastIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateX(30px); } }
@keyframes flash { 0% { background: rgba(223, 71, 88, .15); } 100% { background: transparent; } }

/* ---------- Màn hình nhỏ ---------- */
@media (max-width: 480px) {
  .section { padding: 48px 16px; }
  .section__title { font-size: 2.45rem; }
  .hero__nums { font-size: 60px; }
  .hero__names { padding: 56px 24px 10px; font-size: 20px; }
  .hero__guest { margin: 8px 16px 16px; }
  .quick__row .btn { flex-direction: column; gap: 4px; min-height: 58px; font-size: 13px; }
  .tl { padding: 26px 18px; }
  .tl__info { padding: 0 6px; }
  .tl:nth-child(odd) .tl__title::before { left: -33px; }
  .tl:nth-child(even) .tl__title::before { right: -33px; }
  .event { flex-direction: column; }
  .event__media { flex-basis: auto; aspect-ratio: 16 / 9; border-radius: var(--radius) var(--radius) 0 0; }
  .form-row { flex-direction: column; gap: 12px; }
  .wish-form { padding: 16px; }
}
@media (max-width: 360px) {
  .gifts { grid-template-columns: 1fr; }
  .party { gap: 28px 10px; }
  .player__hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .js [data-reveal] { opacity: 1; transform: none; }
}