:root{
  --ink:#243245; --muted:#6c7790; --brand:#10b5b0; --brand-d:#0a8f8c; --brand-l:#3fd0c6;
  --green:#0f9d8f; --red:#d97066; --blue:#3b7dd8;
  --glass:rgba(255,255,255,.55); --glass-strong:rgba(255,255,255,.72); --glass-line:rgba(255,255,255,.75);
  --field-line:#b6cdcd; --shadow:0 8px 30px rgba(40,110,110,.13); --radius:18px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Sarabun","Segoe UI",system-ui,sans-serif;color:var(--ink);font-size:14.5px;
  background:linear-gradient(125deg,#dff3f3,#e9f7f6 38%,#def2f4 72%,#eafafa);
  min-height:100vh;position:relative;
}
a{color:var(--brand-d)}
a:hover{color:var(--brand)}
.blob{position:fixed;border-radius:50%;filter:blur(80px);opacity:.4;z-index:0;pointer-events:none}
.blob.b1{width:420px;height:420px;background:#9fe3df;top:-110px;left:-90px}
.blob.b2{width:460px;height:460px;background:#bfeae6;bottom:-140px;right:-110px}
.card,.glass,.panel{background:var(--glass);backdrop-filter:blur(18px) saturate(160%);-webkit-backdrop-filter:blur(18px) saturate(160%);border:1px solid var(--glass-line);box-shadow:var(--shadow)}
input,select{font-family:inherit;font-size:14.5px;padding:10px 12px;border:1px solid var(--field-line);border-radius:11px;width:100%;background:rgba(255,255,255,.72);color:var(--ink)}
input:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(16,181,176,.15)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;border:0;border-radius:12px;padding:11px 17px;font-size:14.5px;font-weight:600;cursor:pointer;font-family:inherit;box-shadow:0 6px 16px rgba(16,181,176,.28)}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:rgba(255,255,255,.6);color:var(--brand-d);box-shadow:none;border:1px solid var(--field-line)}
.btn.ghost:hover{background:rgba(255,255,255,.85)}

.wrap{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:0 20px 60px}

.layout{display:flex;align-items:flex-start;gap:20px}
.sidebar{flex:0 0 240px;width:240px;border-radius:var(--radius);padding:14px;position:sticky;top:20px;max-height:calc(100vh - 40px);overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.main{flex:1;min-width:0}

.treeParent{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--muted);cursor:pointer}
.treeParent:hover{background:rgba(16,181,176,.08)}
.treeParent.active{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff}
.treeToggle{background:none;border:0;padding:2px;display:flex;align-items:center;justify-content:center;color:inherit;cursor:pointer;flex:0 0 auto}
.treeLabel{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.treeChildren{margin:0 0 4px 21px;border-left:2px solid var(--field-line);display:flex;flex-direction:column}
.treeChild{position:relative;padding:8px 10px 8px 18px;font-size:13px;color:var(--muted);cursor:pointer;margin-left:-2px}
.treeChild::before{content:"";position:absolute;left:0;top:50%;width:12px;height:2px;background:var(--field-line)}
.treeChild:hover{background:rgba(16,181,176,.08)}
.treeChild.active{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff}

.mobileFilterBar{display:none}

.hdr{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:14px 0 22px;padding:14px 20px;border-radius:20px}
.hdr .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px}
.hdr .logo{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--brand),var(--brand-l));display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(16,181,176,.35)}
.hdr .user{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.pill{font-size:11.5px;font-weight:700;color:var(--brand-d);background:rgba(16,181,176,.14);border:1px solid rgba(16,181,176,.3);border-radius:999px;padding:2px 9px}

.searchbar{position:relative;margin-bottom:16px}
.searchbar input{padding-left:40px}
.searchbar svg{position:absolute;left:13px;top:50%;transform:translateY(-50%);opacity:.55}


.category{border-radius:var(--radius);padding:18px 20px;margin-bottom:18px}
.category .catname{display:flex;align-items:center;gap:10px;font-weight:700;font-size:15.5px;margin-bottom:14px}
.countbadge{font-size:11.5px;font-weight:600;color:var(--muted);background:rgba(255,255,255,.6);border-radius:999px;padding:2px 10px}

.row{display:flex;align-items:center;gap:14px;padding:12px 8px;border-radius:12px}
.row:hover{background:rgba(255,255,255,.35)}
.filetile{width:40px;height:40px;border-radius:10px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;color:#fff;font-size:10px;font-weight:700}
.filetile.pdf{background:var(--red)}
.filetile.docx{background:var(--blue)}
.filetile.xlsx{background:var(--green)}
.rowbody{flex:1;min-width:0}
.rowname{font-weight:600;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rowmeta{font-size:12px;color:var(--muted);margin-top:2px}
.rowactions{display:flex;gap:8px;flex:0 0 auto}
.dlbtn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:10px;border:1px solid var(--field-line);background:rgba(255,255,255,.55);color:var(--brand-d);font-weight:600;font-size:13px;cursor:pointer;text-decoration:none}
.dlbtn:hover{background:rgba(255,255,255,.85)}
.iconbtn{width:34px;height:34px;border-radius:9px;border:1px solid var(--field-line);background:rgba(255,255,255,.55);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink)}
.iconbtn:hover{background:rgba(255,255,255,.85)}
.iconbtn.danger{color:var(--red)}
.addbtn{margin-top:10px;font-size:13px;font-weight:600;color:var(--brand-d);background:none;border:1px dashed var(--brand-l);border-radius:10px;padding:8px 14px;cursor:pointer}
.addbtn:hover{background:rgba(16,181,176,.08)}

.empty{color:var(--muted);text-align:center;padding:40px 0}

.overlay{position:fixed;inset:0;background:rgba(20,32,40,.45);display:flex;align-items:center;justify-content:center;z-index:50}
.modal{width:460px;max-width:calc(100vw - 32px);background:#fff;border-radius:var(--radius);padding:26px 28px;box-shadow:0 20px 60px rgba(20,40,40,.3)}
.modal h3{margin:0 0 18px;font-size:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--muted);font-weight:600;margin-bottom:5px}
.dropzone{border:1.5px dashed var(--field-line);border-radius:12px;padding:22px;text-align:center;color:var(--muted);font-size:13px;cursor:pointer}
.dropzone:hover{border-color:var(--brand)}
.dropzone .fname{color:var(--ink);font-weight:600;margin-top:6px}
.modalactions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}

.errbox{background:rgba(217,112,102,.12);border:1px solid rgba(217,112,102,.3);color:var(--red);border-radius:10px;padding:10px 14px;font-size:13px;margin-bottom:14px}

.previewModal{width:min(900px,calc(100vw - 32px));height:min(85vh,1000px);background:#fff;border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(20,40,40,.3)}
.previewHead{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--field-line);font-weight:600;font-size:14px}
.previewFrame{flex:1;border:0;width:100%}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 20px;border-radius:999px;font-size:13.5px;font-weight:600;box-shadow:0 8px 24px rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:60}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:760px){
  .layout{flex-direction:column}
  .sidebar{display:none}
  .mobileFilterBar{display:flex;overflow-x:auto;gap:8px;margin-bottom:16px;padding-bottom:2px}
  .mobilePill{flex:0 0 auto;white-space:nowrap;padding:8px 16px;border-radius:999px;border:1px solid var(--field-line);background:rgba(255,255,255,.5);font-size:13px;font-weight:600;color:var(--muted);cursor:pointer}
  .mobilePill.active{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;border-color:transparent}
}

@media (max-width:640px){
  .wrap{padding:0 14px 40px}
  .hdr{margin:10px 0 16px;padding:12px 14px;border-radius:16px}
  .hdr .brand span.txt{display:none}
  .rowactions{flex-wrap:wrap}
  .dlbtn{padding:8px 10px;font-size:0}
  .dlbtn svg{margin:0}
  .dlbtn .txt{display:none}
}