/* Thư mời tốt nghiệp — Phương Nhi · cổ điển thanh lịch + điện ảnh */
:root{
  --cream:#FBF6EF; --blush:#F3E4DD; --rose:#B76E79; --rose-deep:#9C5560;
  --ink:#47303A; --gold:#C2A14D; --gold-soft:#E7D3A1; --gold-bright:#E6C66B; --line:#D9C3B6;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"EB Garamond","Cormorant Garamond",serif;background:var(--cream);color:var(--ink);
  line-height:1.75;font-size:19px;overflow-x:hidden;
  background-image:radial-gradient(circle at 18% 10%,rgba(231,211,161,.22),transparent 45%),
                   radial-gradient(circle at 85% 85%,rgba(183,110,121,.1),transparent 42%);}
img{display:block;max-width:100%}
a{color:var(--rose-deep)}
.wrap{max-width:900px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:"Playfair Display",serif;font-weight:600;line-height:1.18}
.script{font-family:"Cormorant Garamond",serif;font-style:italic}
.eyebrow{letter-spacing:.4em;text-transform:uppercase;font-size:13px;color:var(--rose)}

/* ============ INTRO (màn mở đầu điện ảnh) ============ */
.intro{position:fixed;inset:0;z-index:200;background:
   radial-gradient(circle at 50% 38%,#4a2e38,#2b1a20 70%);
   display:flex;align-items:center;justify-content:center;text-align:center;color:#f6ead9;
   transition:opacity 1.1s ease, visibility 1.1s;overflow:hidden}
.intro.gone{opacity:0;visibility:hidden}
.intro-inner{position:relative;z-index:2;padding:20px}
.intro-ring{width:104px;height:104px;border:1px solid var(--gold-soft);border-radius:50%;margin:0 auto 26px;
  display:flex;align-items:center;justify-content:center;opacity:0;transform:scale(.6);
  animation:introRing 1.1s .2s cubic-bezier(.2,.7,.2,1) forwards;
  box-shadow:0 0 44px rgba(230,198,107,.35), inset 0 0 22px rgba(230,198,107,.18)}
.intro-mono{font-family:"Playfair Display",serif;font-size:40px;
  background:linear-gradient(120deg,#E6C66B,#F6E4B0,#C2A14D);-webkit-background-clip:text;background-clip:text;color:transparent}
@keyframes introRing{to{opacity:1;transform:scale(1)}}
.intro-eyebrow{letter-spacing:.42em;text-transform:uppercase;font-size:12px;color:var(--gold-soft);opacity:0;
  animation:fadeUp .9s .5s forwards}
.intro-name{font-family:"Playfair Display",serif;font-weight:600;font-size:clamp(36px,9vw,72px);margin:14px 0 18px;
  background:linear-gradient(120deg,#E6C66B 10%,#F8E8BE 45%,#C2A14D 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
.intro-name span{display:inline-block;opacity:0;transform:translateY(26px) rotate(6deg);
  animation:letterIn .7s cubic-bezier(.2,.8,.2,1) forwards;animation-delay:calc(.7s + var(--i)*.055s)}
@keyframes letterIn{to{opacity:1;transform:none}}
.intro-hint{font-family:"Cormorant Garamond",serif;font-style:italic;font-size:19px;color:var(--gold-soft);opacity:0;
  animation:fadeUp 1s 1.8s forwards;cursor:pointer}
.intro-hint .ar{display:inline-block;animation:bob 1.6s ease-in-out infinite;margin-left:4px}
.intro-shine{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(115deg,transparent 40%,rgba(246,228,176,.14) 50%,transparent 60%);
  background-size:300% 300%;animation:sweep 5s linear infinite .6s}
@keyframes sweep{to{background-position:-200% 0}}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(6px)}}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
body.intro-lock{overflow:hidden;height:100vh}

/* ============ Hạt bay / ánh kim ============ */
.fx{position:fixed;inset:0;z-index:1;pointer-events:none}
.shimmer{position:relative;background:linear-gradient(110deg,var(--rose-deep) 30%,var(--gold-bright) 50%,var(--rose-deep) 70%);
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  animation:shine 6s linear infinite}
@keyframes shine{to{background-position:-220% 0}}

/* ============ Nút nhạc ============ */
.music-btn{position:fixed;right:18px;bottom:18px;z-index:120;width:48px;height:48px;border-radius:50%;
  border:1px solid var(--gold-soft);background:rgba(251,246,239,.85);backdrop-filter:blur(6px);cursor:pointer;
  display:flex;align-items:center;justify-content:center;box-shadow:0 10px 26px -14px rgba(71,48,58,.6);transition:.25s}
.music-btn:hover{transform:translateY(-2px)}
.music-btn .eq{display:flex;gap:3px;align-items:flex-end;height:18px}
.music-btn .eq i{width:3px;height:6px;background:var(--rose-deep);border-radius:2px}
.music-btn.playing .eq i{animation:eq .9s ease-in-out infinite}
.music-btn.playing .eq i:nth-child(2){animation-delay:.2s}.music-btn.playing .eq i:nth-child(3){animation-delay:.4s}.music-btn.playing .eq i:nth-child(4){animation-delay:.1s}
@keyframes eq{0%,100%{height:5px}50%{height:17px}}

/* ============ Reveal khi cuộn ============ */
.reveal{opacity:0;transform:translateY(34px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
body.soft .reveal{transform:translateY(16px);transition-duration:.6s}
.split .w,.split{will-change:transform}
/* heading hiện theo kiểu trượt nhẹ (dùng chung reveal) */

/* nav */
nav{position:sticky;top:0;z-index:40;background:rgba(251,246,239,.84);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
nav .brand{font-family:"Playfair Display",serif;font-size:21px;color:var(--rose-deep);white-space:nowrap}
nav .links{display:flex;overflow:auto;gap:2px}
nav .links a{margin-left:20px;text-decoration:none;color:var(--ink);font-size:15px;letter-spacing:.03em;opacity:.8;transition:.2s;white-space:nowrap}
nav .links a:hover{color:var(--rose)}
@media(max-width:820px){nav .links{display:none}}

/* khung thiệp */
.card-border{border:1px solid var(--line);margin:30px auto;max-width:960px;position:relative;
  background:rgba(255,255,255,.35);box-shadow:0 30px 70px -44px rgba(71,48,58,.5)}
.card-border::before{content:"";position:absolute;inset:10px;border:1px solid var(--gold-soft);pointer-events:none;z-index:0}
.card-border>*{position:relative;z-index:1}

/* HERO */
.hero{text-align:center;padding:84px 26px 50px;position:relative}
.monogram{width:92px;height:92px;border:2px solid var(--gold);border-radius:50%;margin:0 auto 24px;
  display:flex;align-items:center;justify-content:center;font-family:"Playfair Display",serif;font-size:32px;color:var(--rose-deep);background:var(--cream)}
.hero h1{font-size:clamp(42px,8vw,76px);color:var(--rose-deep);margin:4px 0}
.hero .of{font-size:21px;opacity:.8}
.hero .name{font-family:"Playfair Display",serif;font-size:clamp(38px,7vw,62px);color:var(--rose-deep)}
.ornament{display:flex;align-items:center;justify-content:center;gap:16px;margin:26px 0 22px;color:var(--gold)}
.ornament .ln{height:1px;width:80px;background:linear-gradient(90deg,transparent,var(--gold))}
.ornament .ln.r{background:linear-gradient(90deg,var(--gold),transparent)}
.hero .school{font-size:22px}.hero .major{color:var(--rose);font-style:italic;font-size:23px}
.hero .cohort{letter-spacing:.3em;font-size:14px;color:var(--gold);margin-top:8px}
.hero-photo{max-width:430px;margin:34px auto 0}
.hero-photo .frame{border:1px solid var(--line);padding:12px;background:#fff;box-shadow:0 22px 54px -32px rgba(71,48,58,.6)}
.hero-photo img{width:100%;aspect-ratio:3/4;object-fit:cover}
.scroll-cue{width:26px;height:42px;border:1px solid var(--gold);border-radius:14px;margin:36px auto 0;position:relative}
.scroll-cue span{position:absolute;left:50%;top:8px;width:4px;height:8px;margin-left:-2px;background:var(--gold);border-radius:2px;animation:cue 1.6s ease-in-out infinite}
@keyframes cue{0%{opacity:0;transform:translateY(-4px)}40%{opacity:1}100%{opacity:0;transform:translateY(12px)}}

section{padding:62px 0}
.lead{text-align:center;max-width:640px;margin:0 auto 34px}
.lead .eyebrow{display:block;margin-bottom:12px}
.lead h2{font-size:clamp(30px,5vw,46px);color:var(--rose-deep)}
.lead-intro{font-style:italic;color:var(--rose);opacity:.85;margin-top:8px;font-size:18px}
.divider{width:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold),transparent);margin:20px auto;transition:width 1s .2s ease}
.reveal.in .divider{width:80px}

/* STORY */
.story p{max-width:650px;margin:0 auto 22px;font-size:20px}
.story p.first::first-letter{font-family:"Playfair Display",serif;font-size:66px;float:left;line-height:.8;padding:6px 12px 0 0;color:var(--rose)}

/* CHƯƠNG ẢNH */
.chapter{padding:58px 0}
.masonry{columns:3;column-gap:16px}
.masonry .shot{break-inside:avoid;margin:0 0 16px;border:1px solid var(--line);background:#fff;padding:8px;cursor:zoom-in;transition:transform .5s cubic-bezier(.2,.7,.2,1),box-shadow .4s}
.masonry .shot:hover{transform:translateY(-4px) scale(1.012);box-shadow:0 20px 44px -26px rgba(71,48,58,.6)}
.masonry img{width:100%}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid3 .shot{margin:0;border:1px solid var(--line);background:#fff;padding:8px;cursor:zoom-in;overflow:hidden;transition:transform .5s,box-shadow .4s}
.grid3 .shot:hover{transform:translateY(-4px);box-shadow:0 20px 44px -26px rgba(71,48,58,.6)}
.grid3 img{width:100%;aspect-ratio:1/1;object-fit:cover;transition:transform .7s}
.grid3 .shot:hover img{transform:scale(1.06)}
.carousel{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 24px 18px;scrollbar-width:thin}
.carousel .shot{flex:0 0 72%;max-width:360px;scroll-snap-align:center;margin:0;border:1px solid var(--line);background:#fff;padding:8px;cursor:zoom-in}
.carousel .shot img{width:100%;aspect-ratio:3/4;object-fit:cover}
.shot img{transition:transform .7s}
@media(max-width:760px){.masonry{columns:2}.grid3{grid-template-columns:repeat(2,1fr)}.carousel .shot{flex-basis:82%}}

/* QUOTES */
.quotes{background:var(--blush);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.quote-item{max-width:680px;margin:0 auto;text-align:center;padding:24px 20px}
.quote-item:not(:last-child){border-bottom:1px dashed var(--line)}
.quote-item p{font-family:"Cormorant Garamond",serif;font-style:italic;font-size:clamp(21px,3.3vw,29px);color:var(--rose-deep);line-height:1.5}
.quote-item .q{color:var(--gold);font-size:38px;font-family:"Playfair Display",serif;line-height:0;vertical-align:-12px;margin-right:6px}

/* ALBUM (lật) */
.album-sec{padding:60px 0}
.album{max-width:720px;margin:0 auto;padding:0 24px}
.album-stage{position:relative;aspect-ratio:4/5;max-height:72vh;margin:0 auto;perspective:1600px}
.album-slide{position:absolute;inset:0;margin:0;opacity:0;transform:rotateY(14deg) scale(.94);transform-origin:left center;
  transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.2,1);border:1px solid var(--line);background:#fff;padding:12px;
  box-shadow:0 30px 70px -40px rgba(71,48,58,.75);pointer-events:none;cursor:zoom-in}
.album-slide img{width:100%;height:100%;object-fit:cover}
.album-slide.on{opacity:1;transform:none;pointer-events:auto;z-index:2}
.album-slide.prev{opacity:0;transform:rotateY(-14deg) scale(.94);transform-origin:right center}
.album-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:44px;height:44px;border-radius:50%;
  border:1px solid var(--gold-soft);background:rgba(251,246,239,.85);color:var(--rose-deep);font-size:26px;cursor:pointer;line-height:1}
.album-nav.prev{left:-6px}.album-nav.next{right:-6px}
.album-dots{display:flex;gap:7px;justify-content:center;margin-top:18px;flex-wrap:wrap}
.album-dots button{width:8px;height:8px;border-radius:50%;border:none;background:var(--line);cursor:pointer;padding:0;transition:.25s}
.album-dots button.on{background:var(--gold);transform:scale(1.4)}

/* CHI TIẾT LỄ */
.detail{text-align:center}
.detail-grid{display:flex;gap:40px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.detail-grid .d{min-width:170px}
.detail-grid .ic{color:var(--gold);margin-bottom:8px}.detail-grid .ic svg{width:30px;height:30px}
.detail-grid h3{font-size:15px;letter-spacing:.2em;text-transform:uppercase;color:var(--rose);margin-bottom:6px}
.detail-grid p{font-size:19px}
.maps-btn{display:inline-block;margin-top:26px;padding:12px 26px;border:1px solid var(--rose-deep);color:var(--rose-deep);text-decoration:none;border-radius:30px;transition:.25s}
.maps-btn:hover{background:var(--rose-deep);color:#fff;box-shadow:0 12px 26px -14px rgba(156,85,96,.7)}
.countdown{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:34px}
.cd{min-width:92px;border:1px solid var(--line);padding:16px 10px;background:rgba(255,255,255,.55)}
.cd b{display:block;font-family:"Playfair Display",serif;font-size:38px;color:var(--rose-deep)}
.cd span{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}

/* FORM + LỜI CHÚC */
.wishes{background:linear-gradient(180deg,transparent,var(--blush))}
.form-card{max-width:620px;margin:0 auto;background:#fff;border:1px solid var(--line);padding:36px 34px;box-shadow:0 24px 60px -42px rgba(71,48,58,.6)}
.form-card::before{content:"";display:block;width:40px;height:1px;background:var(--gold);margin:0 auto 18px}
label{display:block;font-size:14px;letter-spacing:.14em;text-transform:uppercase;color:var(--rose);margin:14px 0 6px}
input,textarea{width:100%;font-family:inherit;font-size:18px;padding:13px 15px;border:1px solid var(--line);background:var(--cream);color:var(--ink);outline:none;transition:.2s}
input:focus,textarea:focus{border-color:var(--rose);box-shadow:0 0 0 3px rgba(183,110,121,.12)}
textarea{min-height:110px;resize:vertical}
.btn{margin-top:22px;width:100%;padding:15px;border:none;background:var(--rose-deep);color:#fff;font-family:"Playfair Display",serif;font-size:19px;letter-spacing:.05em;cursor:pointer;transition:.25s;position:relative;overflow:hidden}
.btn:hover{background:var(--rose)}
.btn::after{content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;background:linear-gradient(110deg,transparent,rgba(255,255,255,.35),transparent);transform:skewX(-20deg);transition:left .6s}
.btn:hover::after{left:120%}
.hp{position:absolute;left:-9999px}
.flash{max-width:620px;margin:0 auto 18px;padding:14px 18px;border:1px solid var(--gold);background:#fff7ea;color:#7a5f22;text-align:center}
.count-wish{text-align:center;color:var(--rose-deep);font-style:italic;margin:40px 0 20px}
.wishlist{max-width:760px;margin:0 auto;columns:2;column-gap:24px}
.wish{break-inside:avoid;margin-bottom:24px;background:#fff;border:1px solid var(--line);padding:22px 24px;position:relative}
.wish.pin{border-color:var(--gold)}
.wish::before{content:"\201C";position:absolute;top:2px;left:14px;font-family:"Playfair Display",serif;font-size:52px;color:var(--gold-soft);line-height:1}
.wish p{font-size:18px;font-style:italic;margin:12px 0 10px;position:relative}
.wish .who{font-family:"Playfair Display",serif;font-size:17px;color:var(--rose-deep);text-align:right}
.wish .who::before{content:"— "}
@media(max-width:640px){.wishlist{columns:1}.story p.first::first-letter{font-size:52px}}

footer{text-align:center;padding:54px 24px 72px;color:var(--rose-deep)}
footer .monogram{width:62px;height:62px;font-size:22px;margin-bottom:16px}
footer p{font-style:italic;opacity:.85}
footer .admin-link{display:inline-block;margin-top:18px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.5;text-decoration:none}

/* LIGHTBOX */
.lb{position:fixed;inset:0;z-index:150;background:rgba(40,26,32,.93);display:none;align-items:center;justify-content:center}
.lb.on{display:flex}
.lb img{max-width:92vw;max-height:86vh;object-fit:contain;box-shadow:0 10px 60px rgba(0,0,0,.5)}
.lb .x,.lb .nav{position:absolute;color:#fff;background:none;border:none;cursor:pointer;font-size:34px;opacity:.85}
.lb .x{top:18px;right:24px}.lb .nav{top:50%;transform:translateY(-50%);font-size:48px;padding:0 18px}
.lb .prev{left:8px}.lb .next{right:8px}
.lb .cap{position:absolute;bottom:22px;left:0;right:0;text-align:center;color:#f3e4dd;font-style:italic;font-family:"Cormorant Garamond",serif;font-size:20px}

@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none}.intro-name span{opacity:1;transform:none;animation:none}
  .shimmer{animation:none}.fx{display:none}
}