/* Layout: "tường phông" — trang chủ là bức tường các phông chụp; chọn phông để lọc album, mở album là xem ảnh toàn màn hình */
:root{
  --paper:#F4F4F2;        /* nền như phông giấy studio, hơi lạnh */
  --card:#FFFFFF;
  --ink:#19181C;          /* chữ chính */
  --ink-2:#55535C;        /* chữ phụ */
  --line:#E2E1E4;
  --wine:#8A2C43;         /* điểm nhấn: đỏ rượu vang của áo dài cưới */
  --wine-ink:#FFFFFF;
  --wine-soft:#F5E6EA;
  --shade:rgba(20,18,24,.92);
  --display:"Noto Serif Display","Times New Roman",Georgia,serif;
  --body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --r:14px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#121114;--card:#1B1A1E;--ink:#F1EFF2;--ink-2:#A9A6AF;--line:#2C2A31;--wine:#D9879B;--wine-ink:#1A0E12;--wine-soft:#2A1A20;--shade:rgba(8,7,10,.95);color-scheme:dark}}
:root[data-theme="dark"]{--paper:#121114;--card:#1B1A1E;--ink:#F1EFF2;--ink-2:#A9A6AF;--line:#2C2A31;--wine:#D9879B;--wine-ink:#1A0E12;--wine-soft:#2A1A20;--shade:rgba(8,7,10,.95);color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--paper)}
a{color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1240px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--display);font-weight:400;line-height:1.12;margin:0;text-wrap:balance;letter-spacing:-.01em}
p{margin:0}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}
:focus-visible{outline:2px solid var(--wine);outline-offset:3px;border-radius:4px}

/* đầu trang */
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);-webkit-backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:flex;flex-direction:column;line-height:1.05;text-decoration:none}
.brand b{font-family:var(--display);font-size:22px;font-weight:500;letter-spacing:.01em}
.brand span{font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-2);margin-top:3px}
.nav{display:flex;gap:4px;margin-left:auto}
.nav a{text-decoration:none;font-size:14px;font-weight:500;padding:8px 12px;border-radius:999px;color:var(--ink-2)}
.nav a:hover{color:var(--ink);background:var(--card)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:999px;font:inherit;font-size:14px;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;white-space:nowrap}
.btn.solid{background:var(--wine);color:var(--wine-ink)}
.btn.solid:hover{filter:brightness(1.08)}
.btn.line{border-color:var(--ink);color:var(--ink);background:transparent}
.btn.line:hover{background:var(--ink);color:var(--paper)}
@media (max-width:720px){.nav{display:none}.top .btn{margin-left:auto;min-height:40px;padding:0 16px}}

/* mở đầu */
.hero{padding-block:56px 40px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center}
.hero h1{font-size:clamp(40px,6.2vw,80px)}
.hero h1 em{font-style:italic;color:var(--wine)}
.hero .lede{font-size:18px;color:var(--ink-2);max-width:34em;margin-top:20px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero .meta{display:flex;gap:28px;flex-wrap:wrap;margin-top:36px;padding-top:20px;border-top:1px solid var(--line)}
.hero .meta div{display:flex;flex-direction:column}
.hero .meta b{font-family:var(--display);font-size:30px;font-weight:500;line-height:1}
.hero .meta span{font-size:13px;color:var(--ink-2);margin-top:6px}
.stack{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;align-items:start}
.stack a{display:block;border-radius:var(--r);overflow:hidden;background:var(--line);aspect-ratio:3/4.4}
.stack a:nth-child(2){margin-top:48px}
.stack a:nth-child(3){margin-top:16px}
.stack img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.stack a:hover img{transform:scale(1.04)}
@media (max-width:860px){.hero{padding-block:32px 24px}.hero .wrap{grid-template-columns:1fr;gap:28px}.stack a:nth-child(2){margin-top:28px}}

/* tường phông */
.sec{padding-block:64px}
.sec-h{display:flex;align-items:end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:24px}
.sec-h h2{font-size:clamp(30px,4vw,48px)}
.sec-h p{color:var(--ink-2);max-width:36em;margin-top:8px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px}
.chip{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 14px 0 8px;border-radius:999px;border:1px solid var(--line);background:var(--card);font:inherit;font-size:14px;font-weight:500;color:var(--ink);cursor:pointer}
.chip i{width:22px;height:22px;border-radius:999px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.12);flex-shrink:0}
.chip.all i{background:conic-gradient(#F2F1EE 0 25%,#9A9A9C 0 50%,#1F1E21 0 75%,#D8B7A0 0)}
.chip[aria-pressed="true"]{border-color:var(--ink);background:var(--ink);color:var(--paper)}
.chip em{font-style:normal;font-size:12px;opacity:.7}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:28px 20px}
.alb{display:flex;flex-direction:column;gap:12px;text-decoration:none;min-width:0}
.alb .ph{position:relative;border-radius:var(--r);overflow:hidden;aspect-ratio:4/5;background:var(--line)}
.alb .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.alb:hover .ph img{transform:scale(1.035)}
.alb .sw{position:absolute;left:12px;bottom:12px;display:flex;align-items:center;gap:8px;padding:4px 10px 4px 4px;border-radius:999px;background:rgba(255,255,255,.88);color:#19181C;font-size:12px;font-weight:600;backdrop-filter:blur(6px)}
.alb .sw i{width:18px;height:18px;border-radius:999px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.15)}
.alb h3{font-size:22px}
.alb .sub{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-2)}
@media (max-width:560px){.grid,.more{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 12px}.alb{gap:8px}.alb h3{font-size:18px}.alb .sub span:last-child{display:none}.alb .sw{left:8px;bottom:8px;font-size:11px;padding:3px 8px 3px 3px}.alb .sw i{width:14px;height:14px}}
.empty{padding:32px;text-align:center;color:var(--ink-2);border:1px dashed var(--line);border-radius:var(--r)}

/* dịch vụ */
.svc{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--ink)}
.svc div{padding:24px 24px 8px 0;display:flex;flex-direction:column;gap:10px;min-width:0}
.svc div+div{padding-left:24px;border-left:1px solid var(--line)}
.svc h3{font-size:26px}
.svc p{color:var(--ink-2);font-size:15px}
@media (max-width:900px){.svc{grid-template-columns:repeat(2,minmax(0,1fr))}.svc div:nth-child(3){padding-left:0;border-left:0}.svc div:nth-child(n+3){border-top:1px solid var(--line)}}
@media (max-width:520px){.svc{grid-template-columns:1fr}.svc div,.svc div+div{padding-left:0;border-left:0;border-top:1px solid var(--line)}.svc div:first-child{border-top:0}}
.why{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:40px}
.why div{background:var(--card);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:8px}
.why b{font-family:var(--display);font-size:24px;font-weight:500}
.why p{color:var(--ink-2);font-size:15px}
@media (max-width:760px){.why{grid-template-columns:1fr}}

/* liên hệ */
.contact{background:var(--ink);color:var(--paper)}
.contact .wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:48px;padding-block:72px}
.contact h2{font-size:clamp(34px,4.6vw,56px)}
.contact p{color:color-mix(in srgb,var(--paper) 72%,transparent);margin-top:14px;max-width:32em}
.contact .btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.contact .btn.line{border-color:var(--paper);color:var(--paper)}
.contact .btn.line:hover{background:var(--paper);color:var(--ink)}
.info{display:flex;flex-direction:column;gap:18px}
.info .row{display:flex;flex-direction:column;gap:4px;padding-bottom:18px;border-bottom:1px solid color-mix(in srgb,var(--paper) 18%,transparent)}
.info .row span{font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.65}
.info .row b{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;user-select:all}
.info .row a{font-size:16px;font-weight:500}
.copy{align-self:flex-start;margin-top:6px;background:none;border:1px solid color-mix(in srgb,var(--paper) 40%,transparent);color:var(--paper);border-radius:999px;font:inherit;font-size:12px;font-weight:600;padding:4px 12px;cursor:pointer}
@media (max-width:820px){.contact .wrap{grid-template-columns:1fr;gap:36px;padding-block:56px}}
footer{padding-block:28px;font-size:13px;color:var(--ink-2)}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
footer a{color:var(--ink-2)}

/* trang album */
.ahead{padding-block:40px 24px}
.back{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--ink-2);text-decoration:none}
.back:hover{color:var(--ink)}
.ahead h1{font-size:clamp(36px,5.4vw,68px);margin-top:16px}
.ahead .meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:16px;color:var(--ink-2);font-size:14px}
.ahead .meta i{display:inline-block;width:20px;height:20px;border-radius:999px;vertical-align:-5px;margin-right:6px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.15)}
.masonry{columns:3 300px;column-gap:14px}
.masonry button{display:block;width:100%;margin:0 0 14px;padding:0;border:0;background:var(--line);border-radius:10px;overflow:hidden;cursor:zoom-in;break-inside:avoid}
.masonry img{width:100%;height:auto;transition:opacity .3s}
.cta-band{margin-block:48px 64px;padding:32px;border-radius:var(--r);background:var(--wine-soft);display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.cta-band h2{font-size:clamp(24px,3vw,34px)}
.cta-band p{color:var(--ink-2);margin-top:6px}
.more{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;margin-bottom:64px}

/* xem ảnh lớn */
.lb{position:fixed;inset:0;z-index:50;background:var(--shade);display:flex;align-items:center;justify-content:center;padding:calc(56px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(56px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.lb img{max-width:100%;max-height:100%;object-fit:contain;border-radius:6px;user-select:none;-webkit-user-drag:none}
.lb .x,.lb .pv,.lb .nx{position:absolute;border:0;background:rgba(255,255,255,.12);color:#fff;width:48px;height:48px;border-radius:999px;font-size:26px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.lb .x{top:calc(12px + env(safe-area-inset-top,0px));right:max(12px,env(safe-area-inset-right,0px))}
.lb .pv{left:max(12px,env(safe-area-inset-left,0px))}
.lb .nx{right:max(12px,env(safe-area-inset-right,0px))}
.lb .x:hover,.lb .pv:hover,.lb .nx:hover{background:rgba(255,255,255,.24)}
.lb .cnt{position:absolute;left:0;right:0;bottom:calc(16px + env(safe-area-inset-bottom,0px));text-align:center;color:rgba(255,255,255,.75);font-size:13px;font-variant-numeric:tabular-nums}
@media (max-width:600px){.lb .pv,.lb .nx{display:none}}

/* trang độc lập (không còn khung bản mẫu) */
html,body{margin:0}

/* cẩm nang (bài viết) */
.wrap.narrow{max-width:780px}
.lede2{font-size:17px;color:var(--ink-2);max-width:40em;margin-top:14px}
.plist{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:32px 22px}
.pcard{display:flex;flex-direction:column;gap:10px;text-decoration:none;min-width:0}
.pcard .ph{border-radius:var(--r);overflow:hidden;aspect-ratio:16/10;background:var(--line)}
.pcard .ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.pcard:hover .ph img{transform:scale(1.035)}
.pcard .cat{font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--wine)}
.pcard h3{font-size:24px}
.pcard p{color:var(--ink-2);font-size:15px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.pcard .sub{font-size:13px;color:var(--ink-2)}
.pchips{margin-top:24px}
@media (max-width:560px){.plist{grid-template-columns:1fr;gap:28px}.pcard h3{font-size:22px}}

.crumb{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--ink-2)}
.crumb a{color:var(--ink-2);text-decoration:none}
.crumb a:hover{color:var(--ink)}
.phead{padding-block:40px 28px}
.phead .eyebrow{margin-top:22px;color:var(--wine)}
.phead h1{font-size:clamp(34px,5vw,58px);margin-top:12px}
.phead .lede{font-size:19px;color:var(--ink-2);margin-top:18px}
.pmeta{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:18px;font-size:14px;color:var(--ink-2)}
.pcover{margin:0 auto 40px;max-width:1080px}
.pcover img{width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;object-position:50% 30%;border-radius:var(--r);background:var(--line)}
.toc{border:1px solid var(--line);border-radius:var(--r);background:var(--card);padding:18px 22px;margin-bottom:36px}
.toc b{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);margin-bottom:8px}
.toc ol{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--wine);text-decoration:underline}
.prose{font-size:17.5px;line-height:1.78;overflow-wrap:break-word}
.prose>*+*{margin-top:1.1em}
.prose h2+*,.prose h3+*{margin-top:.55em}
.prose h2{font-size:clamp(26px,3.2vw,34px);margin-top:1.8em;scroll-margin-top:84px}
.prose h3{font-size:clamp(21px,2.4vw,25px);margin-top:1.5em;scroll-margin-top:84px}
.prose a{color:var(--wine);text-underline-offset:3px}
.prose ul,.prose ol{padding-left:1.4em}
.prose li+li{margin-top:.4em}
.prose blockquote{margin-left:0;margin-right:0;padding:4px 0 4px 20px;border-left:3px solid var(--wine);font-family:var(--display);font-size:21px;line-height:1.5}
.prose figure{margin-left:0;margin-right:0}
.prose img{display:block;width:auto;max-width:100%;height:auto;max-height:82vh;margin-inline:auto;border-radius:10px;background:var(--line)}
.prose figcaption{font-size:14px;color:var(--ink-2);margin-top:8px;text-align:center}
.prose hr{border:0;border-top:1px solid var(--line);margin-block:2em}
.prose .cta{margin-top:1.6em}
.prose .cta a{display:inline-flex;align-items:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--wine);color:var(--wine-ink);font-size:15px;font-weight:600;text-decoration:none}
.share{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-2)}
.share .btn{min-height:40px;padding:0 16px}
.related{padding-block:16px 64px}
#gridEmpty{margin-top:4px}