/* Khung dùng chung cho mọi mẫu thiệp. Mẫu riêng chỉ đè biến màu/font và phần trang bìa. */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--page,#eee);color:var(--ink);font-family:var(--font-body,system-ui,sans-serif);line-height:1.6;font-size:16px}
body.locked{overflow:hidden}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
a{color:inherit}

.card{max-width:480px;margin:0 auto;background:var(--bg);min-height:100vh;overflow:hidden;position:relative;box-shadow:0 0 40px rgba(0,0,0,.15)}

.sec{padding:56px 24px;text-align:center;position:relative}
.sec-title{font-family:var(--font-title);font-weight:500;font-size:30px;line-height:1.2;margin:0 0 24px;color:var(--accent)}
.sec-sub{margin:-18px 0 28px;color:var(--muted);font-size:14px;letter-spacing:.02em}

/* lời mời */
.fams{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px;font-size:14px}
.fam p{margin:0}
.fam-label{font-family:var(--font-title);font-size:15px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:6px!important}
.fam-addr{color:var(--muted);font-size:13px;margin-top:4px!important}
.invite-lead{margin:0;font-size:15px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.guest-name{font-family:var(--font-script);font-size:36px;line-height:1.3;margin:6px 0;color:var(--accent)}
.invite-to{margin:0 0 28px;color:var(--muted);font-size:14px}
.couple-full{display:flex;align-items:center;justify-content:center;gap:14px}
.couple-full .role{margin:0;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.couple-full .full{margin:2px 0 0;font-family:var(--font-title);font-size:20px}
.couple-full .amp{font-family:var(--font-script);font-size:34px;color:var(--gold)}
.invite-msg{margin:28px auto 0;max-width:340px;font-style:italic;color:var(--muted);font-size:15px}

/* ---------- khối ngày trên bìa (lib/render.js → dateBlock) ----------
   Chữ theo màu nơi đặt; điểm nhấn --db-hi (mẫu có thể đè). */
.db{--db-hi:var(--gold);display:flex;flex-direction:column;align-items:center;margin-top:24px;color:inherit;font-family:var(--font-title)}
.db p{margin:0}
.db-sub{margin-top:10px!important;font-family:var(--font-body);font-size:13px;font-style:italic;opacity:.75;max-width:300px}
.db-d{font-weight:400;line-height:1;color:var(--db-hi)}
/* chia cột: Thứ | 20 | Tháng 12 2026 */
.db-split .db-row{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;width:min(300px,82vw)}
.db-split .db-wd,.db-split .db-my{font-size:12px;line-height:1.5;letter-spacing:.16em;text-transform:uppercase;opacity:.85}
.db-split .db-wd{text-align:right}
.db-split .db-my{text-align:left}
.db-split .db-d{font-size:54px;padding:0 16px;border-left:1px solid color-mix(in srgb,var(--db-hi) 60%,transparent);border-right:1px solid color-mix(in srgb,var(--db-hi) 60%,transparent)}
/* chồng tầng: tháng-năm / số lớn / thứ */
.db-stack .db-my,.db-stack .db-wd{font-size:12px;letter-spacing:.24em;text-transform:uppercase;opacity:.85}
.db-stack .db-d{font-size:84px;margin:2px 0 4px}
/* một dòng giữa hai gạch mảnh */
.db-line .db-d{display:flex;align-items:center;gap:12px;padding:12px 4px;font-size:30px;letter-spacing:.06em;color:inherit;border-top:1px solid color-mix(in srgb,var(--db-hi) 70%,transparent);border-bottom:1px solid color-mix(in srgb,var(--db-hi) 70%,transparent)}
.db-line .db-d i{font-style:normal;font-size:18px;color:var(--db-hi)}
.db-line .db-wd{margin-top:10px;font-size:12px;letter-spacing:.22em;text-transform:uppercase;opacity:.85}
/* tờ lịch bloc */
.db-bloc .db-page{width:132px;background:#fffdf8;color:#2b2420;border-radius:6px;overflow:hidden;box-shadow:0 1px 0 #e9e1d4,0 3px 0 #fffdf8,0 4px 0 #e9e1d4,0 12px 24px rgba(0,0,0,.22);text-align:center}
.db-bloc .db-band{position:relative;padding:12px 0 6px;background:var(--db-band,var(--accent));color:#fff;font-family:var(--font-body);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase}
.db-bloc .db-band i{position:absolute;top:4px;width:8px;height:8px;border-radius:50%;background:#fffdf8;box-shadow:inset 0 1px 2px rgba(0,0,0,.35)}
.db-bloc .db-band i:first-child{left:30px}.db-bloc .db-band i:nth-child(2){right:30px}
.db-bloc .db-d{display:block;margin:8px 0 2px;font-size:60px;font-weight:600;color:var(--db-band,var(--accent))}
.db-bloc .db-wd{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase}
.db-bloc .db-al{margin:4px 10px 10px!important;padding-top:4px;border-top:1px dashed #d9cfc0;font-family:var(--font-body);font-size:11px;color:#8a7d70}

/* ---------- lịch tháng + đếm ngược ---------- */
.s-cal{--cal-hi:var(--accent)}
.cal-sub{margin:-8px 0 22px;font-size:13px;letter-spacing:.06em;opacity:.7}
.cal{width:min(320px,100%);margin:0 auto}
.cal-head{display:flex;align-items:center;justify-content:center;gap:12px;margin:0 0 14px;font-family:var(--font-title);font-size:18px;letter-spacing:.14em;text-transform:uppercase}
.cal-head i{width:4px;height:4px;border-radius:50%;background:var(--cal-hi)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);row-gap:6px;font-size:15px;font-variant-numeric:tabular-nums}
.cal-grid span{display:grid;place-items:center;height:36px}
.cal-grid .cal-w{height:28px;font-size:11px;font-weight:600;letter-spacing:.06em;opacity:.55}
.cal-grid .cal-w:last-of-type{color:var(--cal-hi);opacity:.9}
.cal-on{position:relative;color:var(--cal-on,var(--accent-ink));font-weight:700}
.cal-on::before{content:"";position:absolute;width:38px;height:36px;background:var(--cal-hi);-webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 30'%3E%3Cpath d='M16 29C6 21 0 15 0 8.5 0 3.8 3.7 0 8.3 0c3 0 5.8 1.6 7.7 4.2C17.9 1.6 20.7 0 23.7 0 28.3 0 32 3.8 32 8.5 32 15 26 21 16 29z'/%3E%3C/svg%3E") center/contain no-repeat;mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 30'%3E%3Cpath d='M16 29C6 21 0 15 0 8.5 0 3.8 3.7 0 8.3 0c3 0 5.8 1.6 7.7 4.2C17.9 1.6 20.7 0 23.7 0 28.3 0 32 3.8 32 8.5 32 15 26 21 16 29z'/%3E%3C/svg%3E") center/contain no-repeat;animation:calBeat 1.6s ease-in-out infinite}
.cal-on b{position:relative;margin-top:-3px;font-size:14px}
@keyframes calBeat{50%{transform:scale(1.1)}}
@media (prefers-reduced-motion:reduce){.cal-on::before{animation:none}}
.cd{display:flex;align-items:baseline;justify-content:center;gap:14px;margin-top:26px;padding-top:20px;border-top:1px solid color-mix(in srgb,currentColor 15%,transparent);font-variant-numeric:tabular-nums}
.cal + .cd{width:min(320px,100%);margin-left:auto;margin-right:auto}
.cd-k{font-size:13px;letter-spacing:.14em;text-transform:uppercase;opacity:.6}
.cd-u{display:flex;align-items:baseline;gap:3px}
.cd-u b{font-family:var(--font-title);font-size:26px;font-weight:500;line-height:1;color:var(--cal-hi)}
.cd-u small{font-size:12px;opacity:.65}

/* ---------- lịch trình: dòng thời gian ---------- */
.tl{list-style:none;margin:0 auto;padding:0;max-width:380px;text-align:left}
.tl-item{display:grid;grid-template-columns:64px 1fr;gap:0 18px;position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:81px;top:10px;bottom:-4px;width:1px;background:color-mix(in srgb,var(--accent) 35%,transparent)}
.tl-item:last-child::before{display:none}
.tl-item::after{content:"";position:absolute;left:77px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--bg);border:2px solid var(--accent)}
.tl-when{text-align:right;padding-top:1px}
.tl-when b{display:block;font-family:var(--font-title);font-size:22px;font-weight:500;line-height:1.1;color:var(--accent);font-variant-numeric:tabular-nums}
.tl-when span{font-size:12px;color:var(--muted)}
.tl-body{padding-left:18px}
.tl-body h3{margin:0 0 4px;font-family:var(--font-title);font-weight:500;font-size:20px;line-height:1.25;color:var(--ink)}
.tl-body p{margin:0}
.tl-date{font-size:13px;color:var(--muted);margin-bottom:4px!important}
.tl-place{font-weight:600;font-size:15px}
.tl-addr{font-size:14px;color:var(--muted)}
.tl-act{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px!important}
.tl-act a,.tl-map summary{font-size:13px;font-weight:600;color:var(--accent);text-decoration:none;cursor:pointer;list-style:none}
.tl-act a::after{content:" →"}
.tl-map{margin-top:6px}
.tl-map summary::-webkit-details-marker{display:none}
.tl-map summary::after{content:" ▾"}
.tl-map[open] summary::after{content:" ▴"}
.map{margin:10px 0 0;border-radius:10px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--line)}
.map iframe{width:100%;height:100%;border:0}

/* nút */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:11px 20px;border-radius:999px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);text-decoration:none;font-size:14px;font-weight:600;letter-spacing:.02em;transition:transform .15s,opacity .15s}
.btn:active{transform:scale(.97)}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.block{width:100%;padding:14px}
.btn[disabled]{opacity:.6;pointer-events:none}

/* câu chuyện */
.s-story p{max-width:380px;margin:0 auto 12px;color:var(--ink)}

/* album */
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.ph{border:0;padding:0;aspect-ratio:3/4;border-radius:10px;background:var(--line) center/cover no-repeat}
.ph:nth-child(3n+1){grid-column:span 2;aspect-ratio:4/3}
.lightbox{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.92);display:grid;place-items:center;padding:16px}
.lightbox[hidden]{display:none}
.lightbox img{max-height:90vh;border-radius:6px}
.lb-close{position:absolute;top:12px;right:12px;width:44px;height:44px;border-radius:50%;border:0;background:rgba(255,255,255,.15);color:#fff;font-size:26px}

/* biểu mẫu */
.form{display:grid;gap:14px;text-align:left;background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px 18px}
.form label{display:grid;gap:6px;font-size:13px;color:var(--muted)}
.form input:not([type=radio]),.form select,.form textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 12px;outline:none}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--accent)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.choice{display:grid;gap:8px}
.choice label{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;color:var(--ink);font-size:15px;cursor:pointer;background:var(--bg)}
.choice input{accent-color:var(--accent);width:18px;height:18px;margin:0}
.choice label:has(input:checked){border-color:var(--accent)}
.form-msg{margin:0;min-height:1em;font-size:14px;text-align:center;color:var(--accent)}

/* mừng cưới */
.gifts{display:grid;gap:16px}
.gift{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:22px}
.gift-who{margin:0 0 12px;font-family:var(--font-title);font-size:19px;color:var(--accent)}
.gift img{width:180px;height:180px;margin:0 auto 12px;background:#fff;border-radius:12px;padding:8px}
.gift p{margin:2px 0}
.gift-bank{font-weight:600}
.gift-acc{display:flex;justify-content:center;align-items:center;gap:8px;font-size:18px;letter-spacing:.04em}
.copy{border:1px solid var(--line);background:var(--bg);color:var(--accent);border-radius:999px;font-size:12px;padding:4px 10px}
.gift-holder{color:var(--muted);font-size:13px}

/* lưu bút */
.wish-list{display:grid;gap:10px;margin-top:18px;text-align:left;max-height:420px;overflow:auto}
.wish{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.wish b{color:var(--accent);font-size:14px}
.wish p{margin:2px 0 0;font-size:15px;white-space:pre-line;overflow-wrap:anywhere}

/* lời cảm ơn */
.thanks-big{font-family:var(--font-script);font-size:46px;line-height:1.2;color:var(--accent);margin:0}
.s-thanks p{margin:4px 0;color:var(--muted)}
.thanks-names{font-family:var(--font-title);font-size:22px;color:var(--ink)!important;margin-top:18px!important}

.credit{text-align:center;padding:20px 16px 36px;font-size:12px;color:var(--muted)}
.credit a{text-decoration:none}
.wm{display:inline-block;padding:8px 14px;border-radius:999px;background:var(--paper);border:1px dashed var(--line)}

/* nút nhạc */
.music-btn{position:fixed;z-index:40;right:max(14px,calc(50% - 226px));bottom:18px;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:var(--paper);color:var(--accent);font-size:20px;box-shadow:0 4px 14px rgba(0,0,0,.18)}
.music-btn.playing span{display:inline-block;animation:spin 3s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.mb-bars{display:none}

/* lớp mở thiệp */
.opener{position:fixed;inset:0;z-index:50;display:grid;place-items:center;transition:opacity .7s ease,visibility .7s}
.opener.gone{opacity:0;visibility:hidden}
.is-preview .opener{display:none}
/* bản nhẹ cho thẻ rê chuột (?lite=1): các khối ngoài khung nhìn chưa dựng và chưa vẽ, cuộn tới mới làm → nạp không khựng trang chứa */
.is-lite main>*{content-visibility:auto;contain-intrinsic-size:auto 600px}

/* hiện dần khi cuộn */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

.toast{position:fixed;left:50%;bottom:80px;transform:translate(-50%,20px);background:rgba(20,20,20,.9);color:#fff;padding:10px 16px;border-radius:999px;font-size:14px;opacity:0;transition:.3s;pointer-events:none;z-index:70}
.toast.show{opacity:1;transform:translate(-50%,0)}