:root{
  --cream:#fbf5ec; --paper:#fffdf8; --red:#8e1b2b; --red-2:#b3263a; --gold:#c39a45; --gold-2:#e7d09a;
  --ink:#3a2924; --muted:#8a7468; --line:#ecdcc4; --radius:16px;
  --script:"Dancing Script",cursive; --serif:"Playfair Display",Georgia,serif; --sans:"Be Vietnam Pro",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font:15px/1.65 var(--sans);-webkit-font-smoothing:antialiased}
body.locked{overflow:hidden}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}

/* ---------- Mở đầu ---------- */
#intro{position:fixed;inset:0;z-index:30;background:radial-gradient(120% 90% at 50% 30%,#fff8ee 0%,#f3e3cc 60%,#e9d2b3 100%);
  transition:opacity .9s ease}
#intro.gone{opacity:0;pointer-events:none}
#envCanvas{width:100%;height:100%;display:block;touch-action:manipulation;cursor:pointer}
.intro-ui{position:absolute;left:0;right:0;bottom:max(28px,env(safe-area-inset-bottom));display:flex;flex-direction:column;align-items:center;gap:10px;pointer-events:none}
.tap{margin:0;font:600 15px var(--sans);letter-spacing:.04em;color:var(--red);animation:pulse 1.8s ease-in-out infinite}
.tap.hide{opacity:0;animation:none;transition:opacity .3s}
.skip{pointer-events:auto;background:none;border:0;color:var(--muted);font-size:13px;text-decoration:underline;cursor:pointer;padding:6px 10px}
@keyframes pulse{0%,100%{opacity:.55;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}

#petals{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:35}
.music-btn{position:fixed;right:14px;top:max(14px,env(safe-area-inset-top));z-index:25;width:42px;height:42px;border-radius:50%;
  border:1px solid var(--gold-2);background:#fffdf8e6;color:var(--red);font-size:18px;cursor:pointer;box-shadow:0 4px 14px #8e1b2b22}
.music-btn.on{animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Trang ---------- */
#page{max-width:560px;margin:0 auto;padding:0 18px 40px;opacity:0;transition:opacity 1s ease}
#page.show{opacity:1}
section{padding:46px 0;text-align:center;border-bottom:1px solid var(--line)}
section:last-of-type{border-bottom:0}
h2{font:500 26px/1.25 var(--serif);color:var(--red);margin:0 0 18px}
h2::after{content:"";display:block;width:64px;height:9px;margin:10px auto 0;
  background:linear-gradient(var(--gold),var(--gold)) center/100% 1px no-repeat,
             radial-gradient(circle,var(--gold) 3px,transparent 3.5px) center/9px 9px no-repeat}
.muted{color:var(--muted);font-size:13px}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}

.hero{padding-top:70px;border-bottom:0}
.hy{font:700 64px/1 var(--serif);color:var(--red);text-shadow:0 2px 0 var(--gold-2)}
.hy.small{font-size:38px}
.eyebrow{margin:14px 0 0;font:500 12px var(--sans);letter-spacing:.35em;text-transform:uppercase;color:var(--gold)}
.names{margin:6px 0 4px;font:700 clamp(44px,13vw,64px)/1.1 var(--script);color:var(--red);display:flex;flex-direction:column;align-items:center}
.names .amp{font:italic 500 28px var(--serif);color:var(--gold);margin:2px 0}
.date-big{margin:18px 0 2px;font:500 21px var(--serif);letter-spacing:.06em}
.lunar{margin:0;color:var(--muted);font-size:13px}
.countdown{display:flex;justify-content:center;gap:10px;margin-top:26px}
.countdown .cell{min-width:64px;padding:10px 6px;border:1px solid var(--gold-2);border-radius:12px;background:var(--paper)}
.countdown b{display:block;font:600 24px var(--serif);color:var(--red)}
.countdown span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.countdown .done{font:600 18px var(--serif);color:var(--red)}

.small-caps{margin:0;font-size:12px;letter-spacing:.3em;text-transform:uppercase;color:var(--gold)}
.guest{margin:8px 0 14px;font:700 34px/1.2 var(--script);color:var(--red);word-break:break-word}
.intro-text{margin:0 auto;max-width:400px}
.quote{margin:18px auto 0;max-width:380px;font:italic 500 16px var(--serif);color:var(--muted)}

.families{display:grid;grid-template-columns:1fr 1px 1fr;gap:14px;align-items:start}
.family h3{margin:0 0 6px;font:600 13px var(--sans);letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.family p{margin:2px 0;font-size:14px}
.family .addr{margin-top:8px;color:var(--muted);font-size:12px}
.divider-v{background:var(--line);height:100%}

.couple{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.person{margin:0}
.portrait{aspect-ratio:3/4;border-radius:120px 120px 16px 16px;overflow:hidden;border:3px solid var(--paper);
  box-shadow:0 0 0 1px var(--gold-2),0 10px 24px #8e1b2b1f;background:linear-gradient(160deg,#f3dccb,#e6bfa8);
  display:grid;place-items:center;font:700 44px var(--script);color:#fffdf8}
.portrait img{width:100%;height:100%;object-fit:cover}
.person figcaption{margin-top:10px;display:flex;flex-direction:column}
.person .role{font-size:12px;color:var(--muted)}
.person strong{font:500 17px var(--serif)}

.event{position:relative;margin:0 0 14px;padding:18px 18px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);text-align:left}
.event.main{border-color:var(--gold);box-shadow:0 8px 22px #c39a4526}
.event h3{margin:0;font:500 20px var(--serif);color:var(--red)}
.event .side{position:absolute;right:16px;top:20px;font-size:11px;color:var(--gold);letter-spacing:.08em;text-transform:uppercase}
.event .when{margin:6px 0 2px;font-weight:600}
.event .where{margin:0;font-size:14px}
.event .addr{margin:0;font-size:13px;color:var(--muted)}
.event .actions{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;border:1px solid var(--gold-2);
  background:#fff;color:var(--red);font-size:13px;text-decoration:none;cursor:pointer}
.btn:hover{background:#fff6e8}

.timeline{list-style:none;margin:0;padding:0 0 0 22px;text-align:left;border-left:1px solid var(--gold-2)}
.timeline li{position:relative;margin:0 0 22px}
.timeline li::before{content:"♥";position:absolute;left:-31px;top:0;width:18px;height:18px;border-radius:50%;
  background:var(--paper);color:var(--red-2);font-size:11px;display:grid;place-items:center;border:1px solid var(--gold-2)}
.timeline .y{font:600 13px var(--sans);color:var(--gold)}
.timeline h4{margin:0;font:500 18px var(--serif)}
.timeline p{margin:2px 0 0;font-size:14px;color:var(--muted)}

.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.grid .ph{aspect-ratio:1;border-radius:12px;overflow:hidden;position:relative;display:grid;place-items:center;
  color:#fffdf8;font:700 30px var(--script)}
.grid .ph:nth-child(3n+1){grid-row:span 2;aspect-ratio:auto}
.grid .ph img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.grid .ph small{position:absolute;bottom:8px;left:0;right:0;font:400 10px var(--sans);opacity:.85}

.seat-search{display:flex;gap:8px;margin:14px 0}
.seat-search input{flex:1;min-width:0;padding:11px 14px;border-radius:999px;border:1px solid var(--gold-2);background:#fff}
.seat-search button,.primary{padding:11px 20px;border-radius:999px;border:0;background:var(--red);color:#fff;font-weight:600;cursor:pointer}
.seat-search button:hover,.primary:hover{background:var(--red-2)}
.hall-wrap{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#f6eadb}
#hallCanvas{display:block;width:100%;height:340px;touch-action:none}
.hall-hint{position:absolute;left:0;right:0;bottom:8px;font-size:11px;color:var(--muted);pointer-events:none}
.seat-result{min-height:24px;margin-top:12px;font-size:14px}
.seat-result b{color:var(--red);font:600 18px var(--serif)}

#rsvpForm{text-align:left;display:flex;flex-direction:column;gap:12px}
#rsvpForm label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
#rsvpForm input[type=text],#rsvpForm select,#rsvpForm textarea{padding:10px 12px;border-radius:10px;border:1px solid var(--gold-2);background:#fff;color:var(--ink);font-size:15px}
.choice{display:flex;flex-direction:column;gap:6px}
.choice label{flex-direction:row!important;align-items:center;gap:8px!important;color:var(--ink)!important;font-size:14px!important}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.form-msg{margin:0;min-height:20px;font-size:14px;text-align:center}
.form-msg.ok{color:#2f7d4f}.form-msg.err{color:var(--red-2)}

.wish-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;text-align:left;max-height:420px;overflow:auto}
.wish-list li{padding:12px 14px;border-radius:12px;background:var(--paper);border:1px solid var(--line)}
.wish-list b{color:var(--red);font-weight:600}
.wish-list p{margin:4px 0 0;font-size:14px;white-space:pre-wrap;word-break:break-word}
.wish-list .empty{text-align:center;color:var(--muted);background:none;border:0}

.gift-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.gift-card{padding:14px 10px;border-radius:var(--radius);background:var(--paper);border:1px solid var(--line)}
.gift-card h3{margin:0 0 8px;font:500 15px var(--serif);color:var(--red)}
.gift-card img,.gift-card .qr-empty{width:100%;aspect-ratio:1;border-radius:10px;background:#fff;object-fit:contain}
.gift-card .qr-empty{display:grid;place-items:center;padding:10px;font-size:11px;color:var(--muted);border:1px dashed var(--gold-2)}
.gift-card p{margin:6px 0 0;font-size:12px}
.gift-card .acc{font-weight:600;letter-spacing:.04em}

.end{padding:50px 0 20px;text-align:center}
.thanks{margin:10px 0 0;font:500 20px var(--serif)}
.sign{margin:4px 0 26px;font:700 30px var(--script);color:var(--red)}
.brand{display:inline-block;padding:9px 16px;border-radius:999px;border:1px dashed var(--gold);color:var(--gold);font-size:12px;text-decoration:none}

@media (prefers-reduced-motion:reduce){.reveal{transition:none;opacity:1;transform:none}.tap,.music-btn.on{animation:none}}