:root{
  --bg:#f4f6fb;--panel:#fff;--text:#1b2433;--muted:#6b7686;--line:#e3e8f0;
  --brand:#1f5eff;--brand-ink:#fff;--brand-soft:#e8efff;--danger:#d92d3a;--ok:#12805c;--warn:#b26a00;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 4px 16px rgba(16,24,40,.06);--r:12px;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f141c;--panel:#171e29;--text:#e8edf5;--muted:#93a0b4;--line:#263041;
  --brand:#5b8cff;--brand-ink:#0b1220;--brand-soft:#1c2740;--danger:#ff6b76;--ok:#4fd1a1;--warn:#ffb454;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 4px 16px rgba(0,0,0,.3);
}}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:15px/1.45 "Segoe UI","Sarabun","Noto Sans Thai",system-ui,sans-serif;-webkit-text-size-adjust:100%}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
a{color:var(--brand)}
.hidden{display:none!important}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid var(--line);background:var(--panel);border-radius:10px;white-space:nowrap;min-height:38px}
.btn:hover{border-color:var(--brand)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:600}
.btn.danger{color:var(--danger)}
.btn.ghost{border-color:transparent;background:transparent}
.btn:disabled{opacity:.5;cursor:default}
input[type=text],input[type=password],input[type=url],input[type=number],input[type=search]{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel);min-height:40px}
input:focus-visible,.btn:focus-visible,button:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
label.f{display:block;margin:12px 0 4px;font-weight:600;font-size:13px;color:var(--muted)}
.hint{color:var(--muted);font-size:13px;margin:4px 0}

/* login */
.login{min-height:100dvh;display:grid;place-items:center;padding:16px}
.login .card{width:min(380px,100%);background:var(--panel);border-radius:18px;padding:28px;box-shadow:var(--shadow)}
.login h1{margin:0 0 4px;font-size:24px}
.login .logo{width:56px;height:56px;border-radius:14px;margin-bottom:12px}
.err{color:var(--danger);min-height:20px;margin:8px 0 0;font-size:14px}

/* top bar */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:10px;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top));background:var(--panel);border-bottom:1px solid var(--line)}
.top .brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:17px;cursor:pointer;white-space:nowrap}
.top .brand img{width:26px;height:26px;border-radius:7px}
.top form{flex:1;max-width:420px}
.top .who{color:var(--muted);font-size:13px}
.grow{flex:1}

main{max-width:1100px;margin:0 auto;padding:14px 16px 120px}
.bar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;margin-bottom:12px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:4px;font-size:15px;min-width:0}
.crumbs a{padding:4px 8px;border-radius:8px;text-decoration:none;color:var(--text);cursor:pointer}
.crumbs a:hover{background:var(--brand-soft)}
.crumbs .sep{color:var(--muted)}
.crumbs b{padding:4px 8px}
.actions{display:flex;flex-wrap:wrap;gap:8px}

.list{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;position:relative;min-height:160px}
.list.drag{outline:3px dashed var(--brand);outline-offset:-6px}
.row{display:grid;grid-template-columns:36px 1fr 100px 150px;align-items:center;gap:8px;padding:8px 14px;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.row.head{color:var(--muted);font-size:13px;font-weight:600;background:transparent;cursor:default;position:sticky;top:0}
.row.head span{cursor:pointer;user-select:none}
.row:not(.head):hover{background:var(--brand-soft)}
.row.sel{background:var(--brand-soft)}
.row .nm{display:flex;align-items:center;gap:10px;min-width:0;cursor:pointer}
.row .nm span.t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.row .ic{font-size:22px;width:28px;text-align:center;flex:none}
.row .sub{display:none;color:var(--muted);font-size:12px}
.row .meta{color:var(--muted);font-size:13px}
.row input[type=checkbox]{width:18px;height:18px;accent-color:var(--brand)}
.empty{padding:48px 16px;text-align:center;color:var(--muted)}
.loading{padding:32px;text-align:center;color:var(--muted)}

/* grid view */
.list.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;padding:12px}
.list.grid .row.head{display:none}
.list.grid .row{display:block;position:relative;border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden}
.list.grid .row>.cb{position:absolute;top:8px;left:8px;z-index:2;background:var(--panel);border-radius:6px;padding:2px 3px;display:flex}
.list.grid .row .nm{display:block}
.list.grid .row .thumb{height:110px;display:grid;place-items:center;background:var(--bg);font-size:44px;overflow:hidden}
.list.grid .row .thumb img{width:100%;height:100%;object-fit:cover}
.list.grid .row .cap{padding:8px 10px;font-size:13px}
.list.grid .row .meta{display:none}
.list:not(.grid) .thumb{font-size:22px;width:28px;flex:none;text-align:center}
.list:not(.grid) .cap{min-width:0}
.cap .t{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* uploads */
.uploads{position:fixed;right:16px;bottom:16px;width:min(360px,calc(100vw - 32px));z-index:30;background:var(--panel);border-radius:14px;box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden}
.uploads .uh{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;font-weight:600;background:var(--brand-soft)}
.uploads .ub{max-height:240px;overflow:auto}
.up{padding:8px 14px;border-top:1px solid var(--line);font-size:13px}
.up .n{display:flex;justify-content:space-between;gap:8px}
.up .n span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar2{height:5px;background:var(--line);border-radius:3px;margin-top:5px;overflow:hidden}
.bar2 i{display:block;height:100%;background:var(--brand);width:0;transition:width .15s}
.up.done .bar2 i{background:var(--ok)}
.up.fail .bar2 i{background:var(--danger)}
.up.fail .n span:last-child{color:var(--danger)}

/* dialog */
dialog{border:0;border-radius:16px;padding:0;background:var(--panel);color:var(--text);box-shadow:0 20px 60px rgba(0,0,0,.35);width:min(520px,calc(100vw - 24px));max-height:calc(100dvh - 24px)}
dialog::backdrop{background:rgba(10,15,25,.55)}
dialog.wide{width:min(760px,calc(100vw - 24px))}
dialog.preview{width:min(1000px,calc(100vw - 16px));background:#0b0f16;color:#fff}
.dh{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 18px;border-bottom:1px solid var(--line);font-weight:700}
.db{padding:14px 18px;overflow:auto;max-height:calc(100dvh - 160px)}
.df{display:flex;justify-content:flex-end;gap:8px;padding:12px 18px;border-top:1px solid var(--line)}
.preview .dh{border-color:#263041}
.pv{display:grid;place-items:center;min-height:50vh;max-height:calc(100dvh - 120px);padding:8px}
.pv img,.pv video{max-width:100%;max-height:calc(100dvh - 130px);object-fit:contain}
.pv iframe{width:100%;height:calc(100dvh - 130px);border:0;background:#fff}
.pv .nav{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.14);color:#fff;border:0;border-radius:50%;width:44px;height:44px;font-size:22px}
.pv .nav.l{left:8px}.pv .nav.r{right:8px}
.folder-pick .item{padding:10px 12px;border-bottom:1px solid var(--line);cursor:pointer;display:flex;gap:8px}
.folder-pick .item:hover{background:var(--brand-soft)}

/* admin */
.tabs{display:flex;gap:6px;margin-bottom:14px;flex-wrap:wrap}
.tabs .btn.on{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.card2{background:var(--panel);border-radius:var(--r);box-shadow:var(--shadow);padding:18px;margin-bottom:14px}
.card2 h3{margin:0 0 8px;font-size:16px}
table.t{width:100%;border-collapse:collapse;font-size:14px}
table.t th,table.t td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
table.t th{color:var(--muted);font-size:12px;font-weight:600}
.pill{display:inline-block;padding:2px 8px;border-radius:99px;background:var(--brand-soft);font-size:12px;margin:1px 2px 1px 0}
.ok{color:var(--ok)}.bad{color:var(--danger)}
code,.mono{font-family:Consolas,ui-monospace,monospace;font-size:13px;background:var(--bg);padding:2px 6px;border-radius:6px;word-break:break-all}
.share-row{display:grid;grid-template-columns:1fr 2fr auto auto;gap:6px;align-items:center;margin-bottom:6px}
.switch{display:flex;align-items:center;gap:8px;margin:10px 0}
.switch input{width:20px;height:20px;accent-color:var(--brand)}
.steps{padding-left:20px;margin:6px 0}
.steps li{margin:4px 0}

#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,40px);background:#1b2433;color:#fff;padding:10px 18px;border-radius:99px;opacity:0;pointer-events:none;transition:.25s;z-index:100;max-width:90vw}
#toast.show{opacity:1;transform:translate(-50%,0)}
#toast.bad{background:var(--danger)}

@media (max-width:700px){
  .top{gap:6px;padding-left:10px;padding-right:10px}
  .top .grow{display:none}
  .top form{min-width:0}
  .top .btn{padding:8px 10px}
  .top .who,.top .lbl{display:none}
  .top .brand span{display:none}
  .row{grid-template-columns:32px 1fr;padding:8px 12px}
  .row .meta{display:none}
  .row .sub{display:block}
  .row.head{display:none}
  .actions .btn{padding:8px 11px}
  .share-row{grid-template-columns:1fr 1fr}
  .share-row .path{grid-column:1/-1}
  table.t .hide-m{display:none}
}