/* Album — theo house-web-style (token mik-init) */
:root{
  --p:#1976D2;--p-dark:#0D47A1;--p-soft:#E3F0FC;--p-soft2:#F1F7FE;
  --ok:#2E7D32;--warn:#EF6C00;--danger:#C62828;
  --bg:#F1F4F8;--card:#FFF;--card2:#FBFCFE;--line:#E3E8EF;--line2:#D5DCE6;
  --txt:#1B2430;--txt2:#5A6675;--txt3:#8A96A6;
  --field:#FBFCFE;--ph:#A9B4C2;--radius:16px;--sk:#E6EBF1;
}
:root[data-theme="dark"]{
  --p:#4C9DF0;--p-dark:#1565C0;--p-soft:#16314F;--p-soft2:#132233;
  --bg:#0E141B;--card:#161E27;--card2:#1A232D;--line:#25303C;--line2:#2E3B49;
  --txt:#E6EDF5;--txt2:#A3B0BF;--txt3:#6F7E8F;--field:#1A232D;--ph:#5F6E7E;--sk:#1E2833;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --p:#4C9DF0;--p-dark:#1565C0;--p-soft:#16314F;--p-soft2:#132233;
  --bg:#0E141B;--card:#161E27;--card2:#1A232D;--line:#25303C;--line2:#2E3B49;
  --txt:#E6EDF5;--txt2:#A3B0BF;--txt3:#6F7E8F;--field:#1A232D;--ph:#5F6E7E;--sk:#1E2833;
}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--bg);color:var(--txt);font:15px/1.5 Inter,system-ui,sans-serif;-webkit-text-size-adjust:100%}
a{color:var(--p);text-decoration:none}
.material-icons-round{font-size:22px;line-height:1;vertical-align:middle}

.appbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;
  padding:calc(10px + env(safe-area-inset-top)) 16px 10px;color:#fff;
  background:linear-gradient(120deg,var(--p-dark),var(--p));box-shadow:0 2px 12px rgba(13,71,161,.25)}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:1;min-width:0}
.brand>.material-icons-round{font-size:28px}
.brand b{display:block;font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand small{display:block;font-size:12px;opacity:.8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ibtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:44px;height:44px;padding:0 10px;
  border:0;border-radius:12px;background:transparent;color:inherit;cursor:pointer;font:inherit;font-weight:600}
.appbar .ibtn:hover{background:rgba(255,255,255,.15)}

.wrap{max-width:1400px;margin:0 auto;padding:14px 16px calc(40px + env(safe-area-inset-bottom))}
.alert-md{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:12px;margin-bottom:12px;
  background:var(--p-soft2);border:1px solid var(--line);border-left:4px solid var(--p);color:var(--txt2);font-size:14px}
.alert-md .material-icons-round{color:var(--p)}
.alert-md code{background:var(--p-soft);padding:1px 5px;border-radius:5px;color:var(--txt)}

.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:2px;font-size:13px;color:var(--txt3);min-height:20px}
.crumbs a{color:var(--txt2);padding:2px 4px;border-radius:6px}
.crumbs a:hover{background:var(--p-soft);color:var(--p)}
.crumbs .material-icons-round{font-size:16px}
.head{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin:4px 0 2px}
.head h1{flex:1 1 260px;margin:0;font-size:24px;font-weight:800;letter-spacing:-.01em;line-height:1.25}
.tools{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.search{display:flex;align-items:center;gap:6px;height:44px;padding:0 12px;border:1px solid var(--line2);border-radius:12px;background:var(--field)}
.search:focus-within{border-color:var(--p);box-shadow:0 0 0 3px var(--p-soft)}
.search .material-icons-round{color:var(--txt3);font-size:20px}
.search input{border:0;outline:0;background:transparent;color:var(--txt);font:inherit;width:170px;min-width:0}
.search input::placeholder{color:var(--ph)}
.sel{height:44px;padding:0 10px;border:1px solid var(--line2);border-radius:12px;background:var(--field);color:var(--txt);font:inherit}
.btn-o{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px;border:1px solid var(--p);border-radius:12px;color:var(--p);font-weight:600}
.btn-o:hover{background:var(--p-soft)}
.sec-note{margin:2px 0 14px;color:var(--txt3);font-size:13px;min-height:20px}

/* Album con */
.albums{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;margin-bottom:22px}
.albums:empty{display:none}
.alb{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:var(--txt);
  transition:transform .18s,box-shadow .18s}
.alb:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(16,40,80,.12)}
.alb .cv{position:relative;aspect-ratio:4/3;background:var(--sk);overflow:hidden}
.alb .cv img{width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .3s}
.alb .cv img.ok{opacity:1}
.alb .cv .material-icons-round{position:absolute;inset:0;margin:auto;width:48px;height:48px;font-size:48px;color:var(--txt3)}
.alb .bd{padding:10px 12px 12px}
.alb b{display:block;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.alb small{color:var(--txt3);font-size:12.5px}

/* Bìa album (kiểu D) */
.hero{margin:6px 0 22px}
.hero-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 20px;margin-bottom:16px}
.hero-t h1{margin:0;font-size:32px;font-weight:800;line-height:1.15;letter-spacing:-.015em;word-break:break-word}
.hero-t p{margin:6px 0 0;color:var(--txt2);font-size:14.5px}
.hero-act{display:flex;flex-wrap:wrap;gap:8px}
.hero-media{max-width:1100px;margin:0 auto}
.hv,.hc{position:relative;display:block;width:100%;padding:0;border:0;margin:0;border-radius:var(--radius);overflow:hidden;background:#0b0f14;
  box-shadow:0 12px 36px rgba(16,40,80,.18)}
.hv{aspect-ratio:16/9;cursor:pointer}
.hv img{width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .4s,transform .5s}
.hv img.ok{opacity:1}
.hv:hover img{transform:scale(1.02)}
.hv iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.hv .play{position:absolute;inset:0;margin:auto;width:78px;height:78px;border-radius:50%;background:rgba(255,255,255,.92);color:var(--p-dark);
  display:flex;align-items:center;justify-content:center;box-shadow:0 6px 24px rgba(0,0,0,.35);transition:transform .2s}
.hv:hover .play{transform:scale(1.08)}
.hv .play .material-icons-round{font-size:50px;margin-left:4px}
.hc{background:var(--sk);cursor:zoom-in}
.hc img{width:100%;max-height:72vh;object-fit:contain;display:block;opacity:0;transition:opacity .4s}
.hc img.ok{opacity:1}
.hero-cap{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px 12px;margin:10px 4px 0;font-size:13.5px;color:var(--txt2)}
.hero-cap .material-icons-round{font-size:18px;margin-right:6px;color:var(--txt3)}
.hero-cap a{display:inline-flex;align-items:center;gap:4px;font-weight:600}
.hero-cap a .material-icons-round{color:inherit;margin:0}
.btn-p{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 16px;border:0;border-radius:12px;
  background:var(--p);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.btn-p:hover{filter:brightness(1.08)}
.btn-p:disabled{opacity:.45;cursor:default;filter:none}
button.btn-o{background:transparent;font:inherit;font-weight:600;cursor:pointer}

/* Lưới ảnh vuông */
.photos{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:4px}
.ph{position:relative;display:block;padding:0;border:0;margin:0;background:var(--sk);border-radius:6px;overflow:hidden;cursor:zoom-in;aspect-ratio:1;
  -webkit-touch-callout:none;user-select:none}
.ph .chk{position:absolute;top:6px;left:6px;width:26px;height:26px;border-radius:50%;border:2px solid #fff;background:rgba(0,0,0,.25);
  display:none;align-items:center;justify-content:center;color:#fff;box-shadow:0 1px 4px rgba(0,0,0,.35)}
.ph .chk .material-icons-round{font-size:18px;opacity:0}
.selecting .ph{cursor:pointer}
.selecting .ph .chk{display:flex}
.ph.on .chk{background:var(--p);border-color:#fff}
.ph.on .chk .material-icons-round{opacity:1}
.ph.on img{transform:scale(.88);border-radius:6px}
.ph.on{background:var(--p-soft)}
/* Ít ảnh: thẻ lớn nguyên khung (thiệp, poster…) */
.photos.show{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr));gap:18px;max-width:1100px;margin:0 auto}
.photos.show .ph{aspect-ratio:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:10px;
  display:flex;flex-direction:column;gap:10px;min-height:180px;box-shadow:0 4px 18px rgba(16,40,80,.07);transition:box-shadow .2s,transform .2s}
.photos.show .ph:hover{box-shadow:0 10px 28px rgba(16,40,80,.14);transform:translateY(-2px)}
.photos.show .ph img{height:auto;border-radius:8px;background:var(--sk);min-height:140px}
.photos.show .ph img.ok{min-height:0}
.photos.show .ph:hover img{transform:none}
.photos.show .cap{font-size:14px;color:var(--txt2);text-align:left;padding:0 4px 2px;font-weight:500}
.photos.show .chk{top:18px;left:18px}
.photos.show .vid{right:18px;bottom:auto;top:18px}
.ph .cap{display:block}
.selecting .ph:hover img{transform:none}
.selecting .ph.on:hover img{transform:scale(.88)}

/* Thanh chọn nổi đáy */
.selbar{position:fixed;z-index:50;left:50%;transform:translateX(-50%);bottom:calc(14px + env(safe-area-inset-bottom));
  width:min(560px,calc(100% - 24px));display:flex;align-items:center;gap:6px;padding:8px 8px 8px 6px;border-radius:18px;
  background:var(--card);border:1px solid var(--line2);box-shadow:0 10px 30px rgba(16,40,80,.22)}
.selbar b{flex:1;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.selbar .ibtn{color:var(--txt2)}
.selbar .ibtn:hover{background:var(--p-soft2)}
body.has-selbar .wrap{padding-bottom:calc(100px + env(safe-area-inset-bottom))}
.toast{position:fixed;z-index:120;left:50%;bottom:calc(84px + env(safe-area-inset-bottom));transform:translate(-50%,20px);opacity:0;pointer-events:none;
  max-width:calc(100% - 32px);padding:10px 16px;border-radius:12px;background:#1B2430;color:#fff;font-size:14px;transition:.25s;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.ph img{width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .35s,transform .35s}
.ph img.ok{opacity:1}
.ph:hover img{transform:scale(1.03)}
.ph:focus-visible{outline:3px solid var(--p);outline-offset:2px}
.ph .vid{position:absolute;right:6px;bottom:6px;color:#fff;background:rgba(0,0,0,.55);border-radius:20px;padding:2px 6px;font-size:18px}
.empty{text-align:center;color:var(--txt3);padding:50px 0}
.empty .material-icons-round{font-size:48px}
.loading{display:flex;align-items:center;justify-content:center;gap:10px;color:var(--txt3);padding:40px 0}
.loading[hidden]{display:none}
.spin{width:22px;height:22px;border:3px solid var(--line2);border-top-color:var(--p);border-radius:50%;animation:sp 1s linear infinite;display:inline-block}
@keyframes sp{to{transform:rotate(360deg)}}

/* Lightbox */
.lb{position:fixed;inset:0;z-index:100;background:#05080c;color:#fff;display:flex;flex-direction:column;touch-action:none}
.lb[hidden]{display:none}
.lb-top{position:absolute;top:0;left:0;right:0;z-index:3;display:flex;align-items:center;gap:4px;
  padding:calc(6px + env(safe-area-inset-top)) 8px 18px;background:linear-gradient(rgba(0,0,0,.7),transparent);transition:opacity .25s}
.lb.ui-off .lb-top,.lb.ui-off .lb-nav,.lb.ui-off .lb-status{opacity:0;pointer-events:none}
.lb .ibtn:hover{background:rgba(255,255,255,.14)}
.lb-name{flex:1;min-width:0;padding:0 6px}
.lb-name b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lb-name small{opacity:.7;font-size:12px}
.lb-dl{background:var(--p)!important;color:#fff}
.lb-dl:hover{filter:brightness(1.1)}
.emb{flex:1;overflow:hidden;height:100%}
.emb__box{display:flex;height:100%}
.sl{flex:0 0 100%;min-width:0;height:100%;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.sl img{max-width:100%;max-height:100%;object-fit:contain;user-select:none;-webkit-user-drag:none;transform-origin:0 0;will-change:transform}
.sl img.hi{position:absolute;opacity:0;transition:opacity .25s}
.sl img.hi.ok{opacity:1}
.sl iframe{width:min(100%,1100px);height:min(80%,620px);border:0}
.lb-nav{position:absolute;top:50%;z-index:3;transform:translateY(-50%);width:52px;height:52px;border:0;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:opacity .25s}
.lb-nav:hover{background:rgba(255,255,255,.24)}
.lb-nav .material-icons-round{font-size:32px}
.lb-nav.prev{left:12px}.lb-nav.next{right:12px}
.lb-status{position:absolute;left:50%;bottom:calc(16px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:3;
  font-size:12.5px;background:rgba(0,0,0,.55);padding:5px 12px;border-radius:20px;white-space:nowrap;transition:opacity .25s}
.lb-status:empty{display:none}
.lb-info{position:absolute;right:12px;top:calc(66px + env(safe-area-inset-top));z-index:4;width:min(320px,calc(100% - 24px));
  background:rgba(20,26,34,.94);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:14px 16px;font-size:13.5px}
.lb-info[hidden]{display:none}
.lb-info dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:6px 12px}
.lb-info dt{color:#9aa7b6}.lb-info dd{margin:0;word-break:break-all}

@media (max-width:680px){
  .head h1{font-size:20px;flex-basis:100%}
  .tools{width:100%}
  .search{flex:1}.search input{width:100%;font-size:16px}
  .sel{font-size:16px}
  .btn-o span:last-child{display:none}
  .albums{grid-template-columns:repeat(2,1fr);gap:10px}
  .alb .bd{padding:8px 10px 10px}
  .photos{grid-template-columns:repeat(3,1fr);gap:3px}.ph{border-radius:3px}
  .photos.show{grid-template-columns:1fr;gap:14px}
  .hero-head{margin-bottom:12px}
  .hero-t h1{font-size:24px}
  .hero-act{width:100%}
  .hero-act .btn-p{flex:1}
  .hero-media{margin:0 -16px}
  .hv,.hc{border-radius:0;box-shadow:none}
  .hero-cap{margin:8px 16px 0}
  .hv .play{width:64px;height:64px}.hv .play .material-icons-round{font-size:40px}
  .lb-nav{display:none}
  .lb-dl .t{display:none}
}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}