/* 01 · Son Thư (Son Mài × Thư Tay)
   Sự kết hợp hoàn chỉnh giữa sắc Đỏ Đô Sơn Mài thếp vàng và nền Giấy Dó Màu Be ấm:
   - Màn mở: Đóng dấu chu sa -> Mở nắp phong bì đỏ đô -> Rút tờ thiệp màu be ra
   - Khi cuộn: Nét bút chu sa & chỉ vàng dẫn lối + Cuộn thư mở dần theo ngón tay
   - Ngày cưới: Cào lớp nhũ vàng trên bài vị đỏ đô + Đóng ấn tờ lịch tháng 11 */

body[data-theme="son"] {
  --bg: #f4ece0;
  --paper: #fcf8f1;
  --ink: #281310;
  --muted: #75584f;
  --accent: #841512;
  --accent-deep: #540a08;
  --gold: #c89b50;
  --line: rgba(132, 21, 18, 0.16);
  --on-accent: #fbecd0;
  --f-display: "Cormorant Garamond", Georgia, serif;
  --ornament: "❖ 囍 ❖";
  --radius: 6px;
  --btn-radius: 6px;
  --ph-1: #e8d2b4;
  --ph-2: #c99c7a;
  --ph-ink: rgba(70, 22, 16, 0.6);
  --backdrop:
    radial-gradient(circle at 50% 0%, rgba(218, 173, 98, 0.22), transparent 55%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='64'%3E%3Cpath d='M32 4 60 32 32 60 4 32Z' fill='none' stroke='%23cfa356' stroke-opacity='.15'/%3E%3Ccircle cx='32' cy='32' r='6' fill='none' stroke='%23cfa356' stroke-opacity='.12'/%3E%3C/svg%3E"),
    #3b0706;
}

/* Nét bút chu sa & chỉ vàng dẫn lối dọc theo thiệp */
.sm-trail {
  position: absolute;
  z-index: 0;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.sm-trail-gold {
  fill: none;
  stroke: rgba(200, 155, 80, 0.45);
  stroke-width: 4.5;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: var(--trail-offset, 1);
}
.sm-trail-red {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-dasharray: 1;
  stroke-dashoffset: var(--trail-offset, 1);
}
.sm-trail-tip {
  opacity: 0;
  filter: drop-shadow(0 4px 10px rgba(132, 21, 18, 0.45));
  transition: opacity 0.25s ease;
}
.son > :not(.sm-trail) {
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   TRANG BÌA: Nền Giấy Be Ấm × Cửa Vòm Sơn Mài Đỏ Đô × Ấn Triện Thư Tay
   ========================================================================== */
.son-cover {
  position: relative;
  min-height: min(100svh, 960px);
  display: grid;
  padding: 16px;
  background:
    radial-gradient(90% 50% at 50% 18%, rgba(200, 155, 80, 0.14), transparent 65%),
    radial-gradient(80% 50% at 85% 25%, rgba(132, 21, 18, 0.06), transparent 60%),
    var(--bg);
  color: var(--ink);
  text-align: center;
}

.son-frame {
  position: relative;
  display: grid;
  align-content: space-between;
  padding: 28px 18px 30px;
  border: 1.5px solid rgba(132, 21, 18, 0.35);
  outline: 1px solid rgba(200, 155, 80, 0.45);
  outline-offset: -6px;
  background:
    linear-gradient(180deg, rgba(252, 248, 241, 0.7), rgba(244, 236, 224, 0.4));
}

/* 4 góc triện kỷ hà đỏ đô */
.son-corner {
  position: absolute;
  width: 40px;
  height: 40px;
  color: var(--accent);
  pointer-events: none;
}
.son-c-tl { top: 4px; left: 4px; }
.son-c-tr { top: 4px; right: 4px; transform: scaleX(-1); }
.son-c-bl { bottom: 4px; left: 4px; transform: scaleY(-1); }
.son-c-br { bottom: 4px; right: 4px; transform: scale(-1, -1); }

/* Thanh tiêu đề báo hỷ kiểu Thư Tay */
.son-masthead {
  display: flex;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 2px double var(--accent);
  color: var(--accent);
  font: 600 10px/1 var(--f-body);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.son-title-block {
  position: relative;
  margin: 18px 0 10px;
  text-align: center;
}
/* Ẩn chữ & chìm thừa để tránh trùng với chữ & giữa tên Dâu Rể */
.son-amp-watermark {
  display: none;
}
/* Hoa mẫu đơn đỏ thẫm bồng bềnh ở góc khung (Minimalism - Đỏ Đậm) */
.son-peony-float {
  position: absolute;
  width: 58px;
  height: 58px;
  pointer-events: none;
  filter: drop-shadow(0 8px 14px rgba(68, 8, 10, 0.25));
  animation: drFloat 5.2s ease-in-out infinite;
}
.son-peony-tr {
  top: -12px;
  right: -6px;
  z-index: 1;
}
.son-peony-tl {
  top: -18px;
  left: -10px;
  z-index: 3;
  animation-delay: -2.2s;
}
@keyframes drFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-7px) rotate(4deg); }
}
.son-eyebrow {
  position: relative;
  z-index: 1;
  margin: 0 0 8px;
  color: var(--muted);
  font: italic 500 15px/1.3 var(--f-display);
  letter-spacing: 0.04em;
}
.son-names {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: 4px 10px;
  margin: 0;
  color: var(--ink);
  font: 400 46px/1.02 var(--f-display);
  letter-spacing: -0.02em;
}
.son-names i {
  color: var(--accent);
  font: italic 400 34px/1 var(--f-display);
}

/* Sợi Tơ Hồng Nút Thắt Đồng Tâm tự vẽ nối Dâu – Rể (Hiệu ứng Tơ Duyên tinh giản, 1 nét chỉ đỏ thanh mảnh) */
.son-love-knot-wrap {
  position: relative;
  height: 36px;
  margin: 4px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.son-love-knot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  fill: none;
  stroke-linecap: round;
  overflow: visible;
}
.son-knot-gold,
.son-knot-badge {
  display: none;
}
.son-knot-red {
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  opacity: 0.82;
}
body:not(.is-invitation-locked) .son-knot-red {
  animation: sonKnotDraw 2.2s 0.25s cubic-bezier(0.6, 0, 0.3, 1) forwards;
}
@keyframes sonKnotDraw {
  to { stroke-dashoffset: 0; }
}

/* Sân khấu Ảnh Bìa: Khung Vòm Giấy Dó Viền Đỏ Đô Thanh Mảnh + Dấu Xoay */
.son-hero-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  margin: 6px 0 18px;
}
.son-vertical-couplet {
  writing-mode: vertical-rl;
  color: var(--accent);
  opacity: 0.72;
  font: 600 9.5px/1 "Noto Serif TC", var(--f-body);
  letter-spacing: 0.26em;
  border-right: 1px solid rgba(132, 21, 18, 0.22);
  padding-right: 6px;
  height: 88%;
}

/* Khung Cửa Vòm Giấy Dó Viền Mảnh Đỏ Đô (Thanh lịch, không nặng nề màu mè) */
.son-moongate {
  position: relative;
  width: 92%;
  margin: 0 auto;
  padding: 10px;
  border-radius: 999px 999px 10px 10px;
  border: 1px solid rgba(132, 21, 18, 0.32);
  background: #fcf8f0;
  box-shadow: 0 20px 44px -26px rgba(35, 20, 15, 0.28);
}
.son-moongate-tag {
  display: none;
}
/* Tấm ảnh Polaroid nhỏ nghiêng lấp ló ở góc dưới phải khung vòm */
.son-mini-polaroid {
  position: absolute;
  right: -12px;
  bottom: 20px;
  z-index: 3;
  width: 92px;
  margin: 0;
  padding: 4px 4px 12px;
  border-radius: 4px;
  background: #fcf8f1;
  border: 1px solid rgba(132, 21, 18, 0.25);
  box-shadow: 0 14px 28px -10px rgba(45, 6, 4, 0.55);
  transform: rotate(9deg);
  cursor: zoom-in;
  transition: transform 0.28s ease;
}
.son-mini-polaroid:hover {
  transform: rotate(4deg) scale(1.05);
}
.son-mini-polaroid img {
  border-radius: 2px;
}
.son-moongate-arch {
  border-radius: 999px 999px 8px 8px;
  overflow: hidden;
  border: 1px solid rgba(132, 21, 18, 0.22);
}
.son-hero-ph {
  border-radius: 999px 999px 8px 8px;
}

/* Con dấu tròn xoay kiểu Thư Tay */
.son-spinning-stamp {
  position: absolute;
  top: -18px;
  right: -6px;
  z-index: 4;
  width: 98px;
  fill: none;
  stroke: var(--accent);
  background: radial-gradient(circle, rgba(244, 236, 224, 0.9) 56%, transparent 72%);
  border-radius: 50%;
  animation: son-spin 38s linear infinite;
}
.son-spinning-stamp circle { stroke-width: 1.2; }
.son-spinning-stamp text { fill: var(--accent); stroke: none; font: 600 8.8px/1 var(--f-body); letter-spacing: 0.16em; }
.son-spinning-stamp .son-stamp-core { font: 700 25px/1 "Noto Serif TC", "SimSun", serif; letter-spacing: 0; }
@keyframes son-spin { to { transform: rotate(360deg); } }

/* Bảng Ngày Tháng 3 cột kiểu Thư Tay */
.son-date-ledger {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 6px 0 0;
  padding: 12px 0 10px;
  border-top: 1.5px solid var(--accent);
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.son-date-ledger div + div {
  padding-left: 14px;
  border-left: 1px solid var(--line);
}
.son-date-ledger dt {
  color: var(--muted);
  font: 600 9.5px/1 var(--f-body);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.son-date-ledger dd {
  margin: 4px 0 0;
  color: var(--accent);
  font: 300 50px/1 "Fraunces", var(--f-display);
  letter-spacing: -0.03em;
}
.son-date-ledger .son-ledger-year {
  font-size: 34px;
  line-height: 1.45;
  letter-spacing: -0.02em;
}
.son-cover .son-lunar {
  margin: 10px 0 0;
  color: var(--muted);
  font: italic 500 16px/1.4 var(--f-display);
}

.son-scroll {
  position: absolute;
  left: 50%;
  bottom: 30px;
  z-index: 3;
  display: grid;
  justify-items: center;
  gap: 6px;
  color: var(--accent);
  font: 600 10px/1 var(--f-body);
  letter-spacing: 0.24em;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transform: translateX(-50%);
}
.son-scroll::after {
  content: "";
  width: 1.5px;
  height: 18px;
  background: var(--accent);
  animation: son-drip 2s ease-in-out infinite;
}
/* Dải lụa đỏ đô uốn lượn mềm mại kiểu Tơ Duyên - Đỏ Đậm */
.son-satin-ribbon {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -26px;
  z-index: 2;
  width: 100%;
  height: 60px;
  pointer-events: none;
  filter: drop-shadow(0 10px 18px rgba(70, 8, 10, 0.28));
}
@keyframes son-drip {
  0%, 100% { transform: scaleY(0.3); transform-origin: top; }
  50% { transform: scaleY(1); }
}

/* Thanh chỉ mục đầu mỗi phần: kết hợp đánh số (01) của Thư Tay + Ấn Triện Đỏ Đô */
.son-sec-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}
.son-index {
  margin: 0;
  color: var(--accent);
  font: 600 11px/1 var(--f-body);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.son-sec-stamp {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border: 1.5px solid var(--accent);
  border-radius: 3px;
  color: var(--accent);
  font: 700 9.5px/1 "Noto Serif TC", var(--f-body);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0;
  transform: scale(1.8) rotate(-12deg);
  transition: opacity 0.35s ease, transform 0.45s cubic-bezier(0.22, 0.85, 0.32, 1.15);
}
[data-stamp-section].is-stamped .son-sec-stamp {
  opacity: 0.88;
  transform: scale(1) rotate(-4deg);
}

/* ==========================================================================
   MỤC (01): CUỘN THƯ SƠN MÀI GIẤY DÓ MỞ DẦN THEO NGÓN TAY CUỘN
   ========================================================================== */
.son-letter {
  padding: 64px 22px 40px;
}
.son-scroll-card {
  --unroll: 1;
  position: relative;
}
/* Trục gỗ sơn mài đỏ đô bịt đồng vàng ở hai đầu */
.son-rod {
  position: relative;
  z-index: 3;
  height: 16px;
  margin-inline: -6px;
  border-radius: 999px;
  background:
    linear-gradient(90deg,
      #b68536 0%, #f3d799 6%, #8d611f 11%,
      #520907 11.5%, #841512 50%, #520907 88.5%,
      #8d611f 89%, #f3d799 94%, #b68536 100%);
  box-shadow: 0 8px 18px rgba(45, 8, 6, 0.32);
}
.son-rod-bottom {
  box-shadow: 0 -4px 12px rgba(45, 8, 6, 0.18), 0 10px 22px rgba(45, 8, 6, 0.35);
}
.son-tassel {
  position: absolute;
  left: 50%;
  top: 100%;
  width: 2px;
  height: 28px;
  background: var(--accent);
  transform: translateX(-50%);
}
.son-tassel::after {
  content: "囍";
  position: absolute;
  top: 14px;
  left: 50%;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid #e6c687;
  background: var(--accent);
  color: #fae5b4;
  font: 700 11px/1 "Noto Serif TC", serif;
  transform: translateX(-50%);
}

/* Vùng giấy dó mở dần theo biến --unroll (từ son-mai.js) */
.son-scroll-viewport {
  overflow: hidden;
  max-height: calc(160px + var(--unroll, 1) * 760px);
  transition: max-height 0.12s linear;
}
.son-scroll-inner {
  padding: 36px 22px 34px;
  border-inline: 2px solid rgba(132, 21, 18, 0.28);
  background:
    repeating-linear-gradient(180deg, transparent 0 31px, rgba(132, 21, 18, 0.06) 31px 32px),
    radial-gradient(circle at 50% 0%, rgba(200, 155, 80, 0.12), transparent 60%),
    var(--paper);
  box-shadow:
    inset 0 14px 20px -14px rgba(60, 10, 8, 0.25),
    inset 0 -14px 20px -14px rgba(60, 10, 8, 0.25),
    inset 0 0 0 5px var(--bg),
    inset 0 0 0 6px rgba(200, 155, 80, 0.35);
}

.son-letter-header {
  text-align: center;
  margin-bottom: 18px;
}
.son-mini-seal {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: 10px;
  border-radius: 6px;
  background: var(--accent);
  color: #f9e4b4;
  font: 700 19px/1 "Noto Serif TC", "SimSun", serif;
  transform: rotate(45deg);
  box-shadow: 0 6px 14px rgba(132, 21, 18, 0.25);
}
.son-guest {
  display: inline-block;
  margin: 10px 0 0 !important;
  padding: 0 16px 5px;
  border-bottom: 1.5px solid var(--gold);
  color: var(--ink) !important;
  font: italic 600 24px/1.2 var(--f-display) !important;
}

.son-letter-headline {
  margin: 10px 0 18px;
  font: 300 40px/1.08 "Fraunces", var(--f-display);
  letter-spacing: -0.02em;
  text-align: left;
}
.son-letter-headline em {
  color: var(--accent);
  font-style: italic;
}
.son-letter-prose p {
  margin: 0 0 16px;
  color: var(--ink);
  font-size: 14.5px;
  line-height: 2.02;
  text-align: left;
}
.son-letter-prose strong {
  color: var(--accent);
  font-weight: 600;
}

.son-letter-polaroid {
  margin: 20px auto 22px;
  width: 88%;
}
.son-secondary-ph {
  border-radius: 6px;
  border: 4px solid var(--paper);
  outline: 1px solid rgba(132, 21, 18, 0.25);
  box-shadow: 0 16px 32px -18px rgba(55, 10, 8, 0.38);
  transform: rotate(-1.2deg);
}

.son-signature-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed rgba(132, 21, 18, 0.28);
  text-align: left;
}
.son-sign-label {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}
.son-sign {
  margin: 4px 0 0;
  color: var(--accent);
  font: italic 600 26px/1.1 var(--f-display);
}

/* Ấn triện Hỷ Sự tự động đóng xuống góc thư khi cuộn mở hết */
.son-red-chop {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  border: 2px solid var(--accent);
  outline: 1px solid var(--accent);
  outline-offset: -4px;
  border-radius: 4px;
  background: rgba(132, 21, 18, 0.08);
  color: var(--accent);
  font: 700 12px/1.1 "Noto Serif TC", serif;
  text-align: center;
  cursor: pointer;
  opacity: 0;
  transform: scale(2.2) rotate(14deg);
}
.son-scroll-card.is-chopped .son-red-chop {
  animation: sonChopStamp 0.55s cubic-bezier(0.22, 0.85, 0.32, 1.15) forwards;
}
@keyframes sonChopStamp {
  0% { opacity: 0; transform: translateY(-32px) scale(2.2) rotate(16deg); }
  60% { opacity: 1; transform: translateY(0) scale(0.92) rotate(7deg); background: rgba(132, 21, 18, 0.14); }
  100% { opacity: 0.92; transform: translateY(0) scale(1) rotate(7deg); background: rgba(132, 21, 18, 0.1); }
}

/* ==========================================================================
   PANEL ĐỎ ĐÔ THÔNG TIN LỄ CƯỚI & TIỆC CƯỚI (Tinh gọn theo chungdoi.com)
   ========================================================================== */
.son-event {
  padding: 28px 20px 36px;
}
.son-plaque {
  position: relative;
  padding: 36px 20px 32px;
  border: 1px solid rgba(207, 163, 86, 0.55);
  border-radius: 12px;
  background: linear-gradient(180deg, #56100e 0%, #3d0907 100%);
  color: #f9e8c6;
  text-align: center;
  box-shadow: 0 24px 48px -24px rgba(50, 6, 5, 0.55);
}
.son-plaque .kicker {
  color: #f3dfb9;
  font-size: 13px;
  letter-spacing: 0.22em;
}
.son-plaque-families {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  gap: 12px;
  align-items: start;
  margin: 22px 0 20px;
}
.son-plaque-families > i {
  width: 1px;
  height: 100%;
  background: rgba(243, 223, 185, 0.25);
}
.son-plaque-families > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.son-plaque-families span {
  color: rgba(243, 223, 185, 0.72);
  font: 500 10.5px/1.2 var(--f-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.son-plaque-families strong {
  color: #fff6e4;
  font: 600 13.5px/1.3 var(--f-body);
}
.son-plaque-families small {
  margin-top: 2px;
  color: rgba(243, 223, 185, 0.7);
  font-size: 11px;
}
.son-plaque-announce {
  margin: 0 0 16px;
  color: rgba(249, 232, 198, 0.86);
  font: 500 11px/1.4 var(--f-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.son-plaque-couple {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin: 0 0 18px;
}
.son-plaque-couple strong {
  display: block;
  color: #fff6e4;
  font: 400 32px/1.12 var(--f-display);
}
.son-plaque-couple span {
  display: block;
  margin-top: 2px;
  color: rgba(243, 223, 185, 0.72);
  font: 500 10px/1 var(--f-body);
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.son-plaque-couple > i {
  color: #e2bc76;
  font: italic 400 26px/1 var(--f-display);
}
.son-event-time-row {
  display: flex;
  justify-content: center;
  align-items: baseline;
  gap: 10px;
  margin: 4px 0 2px;
  color: #fff6e4;
}
.son-event-time-row span {
  font: 500 12px/1 var(--f-body);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.son-event-time-row strong {
  color: #f3d493;
  font: 600 20px/1.1 var(--f-display);
}

.son-rule {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 150px;
  margin: 18px auto 14px;
  color: #dfc07f;
}
.son-rule::before, .son-rule::after { content: ""; flex: 1; height: 1px; background: currentColor; opacity: 0.7; }
.son-rule i { width: 8px; height: 8px; margin: 0 10px; background: currentColor; transform: rotate(45deg); }
.son-dual-events {
  display: grid;
  gap: 12px;
  text-align: center;
}
.son-event-box {
  padding: 14px 12px;
  border: 1px solid rgba(229, 193, 120, 0.35);
  border-radius: 8px;
  background: rgba(45, 4, 4, 0.38);
}
.son-event-box.is-featured {
  border-color: rgba(229, 193, 120, 0.72);
  background: rgba(58, 6, 4, 0.56);
  box-shadow: inset 0 0 18px rgba(229, 193, 120, 0.08);
}
.son-venue-kicker {
  margin: 0 0 4px;
  color: #ebd099;
  font: 600 10px/1.35 var(--f-body);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.son-event-lunar {
  margin: 0 0 8px;
  color: rgba(249, 232, 198, 0.78);
  font: italic 400 13px/1.25 var(--f-display);
}
.son-plaque h2,
.son-plaque h3 {
  margin: 0;
  color: #fff4d8;
  font: 600 24px/1.2 var(--f-display);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.son-plaque h2 {
  font-size: 28px;
}
.son-plaque address {
  margin-top: 5px;
  color: rgba(249, 232, 198, 0.88);
  font-style: normal;
  font-size: 13px;
  line-height: 1.45;
}
.son-event-map-link {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 11px;
  border: 1px solid rgba(229, 193, 120, 0.55);
  border-radius: 999px;
  background: rgba(229, 193, 120, 0.12);
  color: #fae3ae;
  font: 600 10.5px/1.2 var(--f-body);
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}
.son-event-map-link:hover {
  background: rgba(229, 193, 120, 0.25);
  transform: translateY(-1px);
}
/* Dải rèm lượn sóng viền vàng gắn huy hiệu Song Hỷ (Song Hỷ V2 - Đỏ) */
.son-curtain-wave {
  position: relative;
  margin: 22px -10px -16px;
  padding-top: 4px;
}
.son-curtain-wave svg {
  display: block;
  width: 100%;
  height: 30px;
}
.son-curtain-seal {
  position: absolute;
  left: 50%;
  top: 52%;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1.5px solid #fae3af;
  background: radial-gradient(circle at 30% 30%, #a51e18, #580b08);
  color: #fae3af;
  font: 700 14px/1 "Noto Serif TC", "SimSun", serif;
  transform: translate(-50%, -50%);
  box-shadow: 0 4px 12px rgba(30, 3, 2, 0.45);
}

/* ==========================================================================
   PHẦN DÙNG CHUNG: Kết hợp Đánh số mục Thư Tay + Sắc Đỏ Đô Sơn Mài trên nền Be
   ========================================================================== */
body[data-theme="son"] .wedding-extras {
  margin-top: 16px;
  background: transparent;
}
body[data-theme="son"] .x-section {
  border-top: 1.5px solid rgba(132, 21, 18, 0.2);
}
body[data-theme="son"] .x-head h2 {
  color: var(--accent);
  font-weight: 600;
}
body[data-theme="son"] .x-schedule-list .is-main {
  background: radial-gradient(120% 120% at 50% 0%, #9b1d17, #5e0c09);
  outline: 1px solid rgba(207, 165, 99, 0.6);
  outline-offset: -7px;
}
body[data-theme="son"] .x-gift {
  background: radial-gradient(120% 100% at 50% 0%, #871611, #4b0906);
  color: #f6e3bf;
}
body[data-theme="son"] .x-gift .x-kicker,
body[data-theme="son"] .x-gift .x-head h2 { color: #ebd099; }
body[data-theme="son"] .x-gift .x-lead { color: rgba(246, 227, 191, 0.84); }
body[data-theme="son"] .x-gift .x-choice legend { color: #ebd099; }
body[data-theme="son"] .x-gift .x-choice span { color: var(--ink); }
body[data-theme="son"] .x-gift .x-choice input:checked + span {
  border-color: #ebd099;
  background: linear-gradient(135deg, #f7dfaa, #cfa356);
  color: #5c0c09;
  font-weight: 600;
}

body[data-theme="son"] .theme-close {
  background: radial-gradient(120% 90% at 50% 0%, #961b15, #480806);
  color: #fbecd0;
  border-top: 2px solid #cfa356;
}
.son-close-bow-wrap {
  position: relative;
  display: inline-grid;
  place-items: center;
  margin-bottom: 18px;
}
.son-bow {
  width: 124px;
  fill: none;
  stroke: #e5c178;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.85;
}
.son-close-seal {
  position: absolute;
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1.5px solid #ebd099;
  background: radial-gradient(circle at 30% 30%, #961b15, #480806);
  color: #ebd099;
  font: 700 22px/1 "Noto Serif TC", "SimSun", serif;
  box-shadow: 0 6px 16px rgba(20, 2, 2, 0.45);
}
body[data-theme="son"] .theme-close p { color: #e3c48a; }
body[data-theme="son"] .theme-close h2 { font-weight: 500; font-size: 50px; }
body[data-theme="son"] .theme-close h2 i { color: #e3c48a; }
body[data-theme="son"] .theme-close span { display: block; color: #dcbf8b; }
.son-footer-guest-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 22px;
  padding: 7px 15px;
  border: 1px dashed rgba(227, 196, 138, 0.45);
  border-radius: 999px;
  background: rgba(255, 244, 220, 0.08);
  color: rgba(245, 219, 166, 0.85);
  font: 500 11px/1.2 var(--f-body);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.son-footer-guest-btn:hover {
  background: rgba(255, 244, 220, 0.16);
  border-color: #e3c48a;
  color: #fff6e0;
}

/* ==========================================================================
   MÀN MỞ THIỆP TINH GIẢN (THƯ TAY GIẤY DÓ MÀU BE & ẤN TRIỆN ĐỎ ĐÔ):
   Nền giấy dó kem ấm, thẻ thư tối giản, đóng ấn chu sa tách giấy nhẹ nhàng
   ========================================================================== */
body[data-theme="son"] .invitation-gate {
  --ink-speckle: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='92' height='92'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.55' numOctaves='3' seed='7'/%3E%3CfeColorMatrix values='0 0 0 0 .95 0 0 0 0 .93 0 0 0 0 .9 0 0 0 -16 6.4'/%3E%3C/filter%3E%3Crect width='92' height='92' filter='url(%23n)'/%3E%3C/svg%3E");
  --gate-bg: #f4ede1;
  --gate-ink: #231915;
  --gate-gold: #841512;
}
body[data-theme="son"] .invitation-door {
  background: var(--gate-bg);
  transition: transform 0.85s 1s cubic-bezier(0.7, 0, 0.2, 1);
}
body[data-theme="son"] .invitation-door-left {
  inset: 0 0 auto 0;
  width: auto;
  height: 50.5%;
  border-bottom: 1px dashed rgba(132, 21, 18, 0.28);
}
body[data-theme="son"] .invitation-door-right {
  inset: auto 0 0 0;
  width: auto;
  height: 50.5%;
}
body[data-theme="son"] .invitation-gate.is-opening .invitation-door-left {
  transform: translateY(-101%);
}
body[data-theme="son"] .invitation-gate.is-opening .invitation-door-right {
  transform: translateY(101%);
}

body[data-theme="son"] .gate-envelope {
  display: none;
}

body[data-theme="son"] .invitation-gate-card {
  position: relative;
  z-index: 5;
  width: min(352px, calc(100vw - 40px));
  padding: 44px 28px 36px;
  background: #fcf8f0;
  border: 1px solid rgba(35, 25, 21, 0.16);
  outline: 1px solid rgba(132, 21, 18, 0.14);
  outline-offset: -8px;
  box-shadow: 0 24px 60px -24px rgba(35, 20, 15, 0.25);
  transition-delay: 1s;
}
body[data-theme="son"] .invitation-gate-card .gate-title {
  margin: 6px 0 10px;
  font-weight: 300;
  font-size: 46px;
  letter-spacing: -0.025em;
  color: var(--gate-ink);
  text-shadow: none;
}
body[data-theme="son"] .invitation-gate-card .gate-title i {
  display: block;
  margin: 4px 0;
  color: var(--gate-gold);
  font-size: 28px;
  font-style: italic;
}
body[data-theme="son"] .invitation-gate-card .gate-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 140px;
  margin: 8px auto 12px;
  color: var(--gate-gold);
  font-size: 14px;
}
body[data-theme="son"] .invitation-gate-card .gate-divider::before,
body[data-theme="son"] .invitation-gate-card .gate-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(132, 21, 18, 0.25);
}
body[data-theme="son"] .invitation-gate-card .gate-date {
  margin: 0 0 14px;
  font-size: 15px;
  color: #5c4b42;
  letter-spacing: 0.08em;
}
body[data-theme="son"] .invitation-gate-card .gate-invite-word {
  margin: 0 0 24px;
  color: var(--gate-ink);
  font: 400 18px/1.2 var(--f-display);
  letter-spacing: 0.06em;
  text-transform: none;
}

/* Ấn triện chu sa đỏ đô lì kiểu Thư Tay */
body[data-theme="son"] .invitation-gate-card button {
  gap: 18px;
  color: var(--gate-gold);
}
body[data-theme="son"] .invitation-gate-card button span {
  position: relative;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: #841512;
  box-shadow:
    inset 0 0 0 4px #841512,
    inset 0 0 0 5.5px rgba(252, 248, 240, 0.82),
    0 12px 22px -6px rgba(30, 22, 18, 0.35);
  color: #fbf6ee;
  font: 700 38px/1 "Noto Serif TC", "SimSun", serif;
  animation: none;
  transform: translateY(-4px) rotate(-8deg);
}
body[data-theme="son"] .invitation-gate-card button span::after {
  content: "";
  position: absolute;
  inset: -2px;
  border: 1.5px solid #841512;
  border-radius: 50%;
  opacity: 0;
}
body[data-theme="son"] .invitation-gate-card button:hover span {
  transform: translateY(-8px) rotate(-4deg) scale(1.04);
}
body[data-theme="son"] .invitation-gate-card > small {
  color: #7c6a5f;
}
body[data-theme="son"] .opening-petals {
  display: none;
}

body[data-theme="son"] .invitation-gate.is-opening button span {
  animation: sonInkPress 0.8s cubic-bezier(0.3, 0, 0.3, 1) forwards;
}
body[data-theme="son"] .invitation-gate.is-opening button span::after {
  animation: sonInkRing 0.7s 0.38s ease-out both;
}
body[data-theme="son"] .invitation-gate.is-opening .invitation-gate-card {
  animation: sonInkJolt 0.24s 0.36s ease-out;
}

@keyframes sonInkPress {
  0% { transform: translateY(-4px) rotate(-8deg) scale(1); }
  38% {
    transform: translateY(-46px) rotate(-16deg) scale(1.35);
    box-shadow: inset 0 0 0 4px #841512, inset 0 0 0 5px rgba(252, 248, 240, 0.75), 0 60px 34px -14px rgba(30, 22, 18, 0.25);
    animation-timing-function: cubic-bezier(0.6, 0, 1, 0.6);
  }
  48% {
    transform: translateY(0) rotate(-3deg) scale(0.9);
    box-shadow: inset 0 0 0 4px #841512, inset 0 0 0 5px rgba(252, 248, 240, 0.75), 0 0 0 0 rgba(30, 22, 18, 0);
    background-image: none;
  }
  49% { background-image: var(--ink-speckle); }
  58% { transform: translateY(0) rotate(-3deg) scale(1.05); }
  100% {
    transform: translateY(0) rotate(-3deg) scale(1);
    box-shadow: inset 0 0 0 4px #841512, inset 0 0 0 5px rgba(252, 248, 240, 0.75), 0 0 0 0 rgba(30, 22, 18, 0);
    background-image: var(--ink-speckle);
  }
}
@keyframes sonInkRing {
  from { opacity: 0.75; transform: scale(1); }
  to { opacity: 0; transform: scale(2.05); }
}
@keyframes sonInkJolt {
  0% { transform: translateY(0); }
  35% { transform: translateY(3px) scale(0.995); }
  100% { transform: translateY(0); }
}

@media (max-width: 360px) {
  .son-names { font-size: 40px; }
  .son-spinning-stamp { width: 82px; }
}