:root{
  --bg:#07111f;--panel:#0c1929;--panel-2:#112238;--line:#243a54;
  --text:#f5f8fc;--muted:#97a9bd;--blue:#5cc8ff;--violet:#7f7cff;
  --danger:#ff7b8a;--shadow:0 20px 60px rgba(0,0,0,.3)
}
*{box-sizing:border-box}
html{background:var(--bg)}
body{margin:0;min-height:100vh;color:var(--text);font-family:Inter,"Noto Sans Thai",system-ui,-apple-system,sans-serif;background:
radial-gradient(circle at 85% 0%,#15365c 0%,transparent 32%),
linear-gradient(180deg,#07111f 0%,#091522 100%)}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.app-shell{width:min(1240px,100%);margin:auto;padding:20px}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:4px 0 22px}
.brand{display:flex;align-items:center;gap:13px}
.brand-logo{width:50px;height:50px;border-radius:15px;display:grid;place-items:center;font-weight:900;color:#07111f;background:linear-gradient(135deg,var(--blue),var(--violet));box-shadow:0 12px 34px rgba(92,200,255,.24)}
.brand h1{margin:0;font-size:22px}
.brand p{margin:3px 0 0;color:var(--muted);font-size:13px}
.top-actions{display:flex;gap:8px}
.btn{border:0;border-radius:12px;padding:11px 15px;color:var(--text)}
.btn.primary{font-weight:900;color:#07111f;background:linear-gradient(135deg,var(--blue),var(--violet))}
.btn.ghost{background:#112238;border:1px solid var(--line)}
.btn.danger{color:#ffb4bd}
.btn.full{width:100%;margin-top:10px}
.hero{display:grid;grid-template-columns:1.35fr .8fr;gap:24px;align-items:end;padding:36px 0}
.eyebrow{font-size:12px;letter-spacing:.16em;color:var(--blue);font-weight:900}
.hero h2{font-size:clamp(36px,5vw,65px);line-height:1.04;letter-spacing:-.045em;margin:13px 0 14px}
.hero p{color:var(--muted);font-size:16px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);background:linear-gradient(145deg,rgba(17,34,56,.96),rgba(8,20,34,.96));border:1px solid var(--line);border-radius:23px;padding:17px;box-shadow:var(--shadow)}
.stats div{padding:15px;border-right:1px solid var(--line)}
.stats div:last-child{border-right:0}
.stats strong{display:block;font-size:20px}
.stats span{font-size:11px;color:var(--muted)}
.upload-card{padding:18px;border:1px solid var(--line);border-radius:28px;background:rgba(12,25,41,.92);box-shadow:var(--shadow)}
.drop-zone{min-height:245px;border:1.5px dashed #3a5877;border-radius:21px;display:grid;place-content:center;text-align:center;padding:24px;background:linear-gradient(180deg,rgba(92,200,255,.055),transparent);transition:.2s}
.drop-zone.dragging{border-color:var(--blue);background:rgba(92,200,255,.12);transform:scale(.998)}
.upload-symbol{font-size:46px;color:var(--blue)}
.drop-zone h3{margin:5px 0}
.drop-zone p{margin:0 0 18px;color:var(--muted)}
.upload-options{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.upload-options label{font-size:12px;color:var(--muted)}
input,select,textarea{width:100%;margin-top:6px;border-radius:12px;border:1px solid var(--line);padding:12px;color:var(--text);background:#081522;outline:none}
textarea{resize:vertical;min-height:210px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}
input:focus,select:focus,textarea:focus{border-color:var(--blue)}
.upload-queue{display:grid;gap:9px;margin-top:13px}
.queue-item{display:grid;grid-template-columns:1fr auto;gap:12px;padding:12px;border-radius:12px;border:1px solid var(--line);background:#081522}
.queue-item small{color:var(--muted)}
.progress{height:5px;margin-top:9px;border-radius:999px;background:#172a40;overflow:hidden}
.progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--blue),var(--violet));transition:.15s}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:27px 0 17px}
.search-box{display:flex;align-items:center;gap:8px;min-width:330px;padding:0 12px;border-radius:14px;border:1px solid var(--line);background:#0c1929}
.search-box input{margin:0;border:0;background:transparent}
.filters{display:flex;gap:8px;flex-wrap:wrap}
.filter{padding:9px 13px;border-radius:12px;border:1px solid var(--line);background:#102035;color:var(--muted)}
.filter.active{border-color:transparent;background:var(--blue);color:#07111f;font-weight:900}
.section-heading h3{margin:0;font-size:22px}
.section-heading p{margin:4px 0 14px;color:var(--muted)}
.file-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.file-card{min-width:0;border:1px solid var(--line);border-radius:18px;padding:15px;background:linear-gradient(145deg,#0d1b2c,#08131f)}
.file-preview{height:125px;border-radius:13px;display:grid;place-items:center;overflow:hidden;background:#12243a;font-size:44px}
.file-preview img,.file-preview video{width:100%;height:100%;object-fit:cover}
.file-name{font-weight:900;margin:12px 0 3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-meta{font-size:12px;color:var(--muted)}
.file-folder{font-size:11px;color:var(--blue);margin-top:4px}
.file-actions{display:grid;grid-template-columns:1fr 1fr 40px;gap:7px;margin-top:13px}
.file-actions button,.file-actions a{min-height:39px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;text-decoration:none;color:var(--text);background:#112238;font-size:13px}
.file-actions a{background:var(--blue);border-color:transparent;color:#07111f;font-weight:900}
.file-actions .delete-btn{color:var(--danger)}
.empty-state{text-align:center;padding:70px 20px;color:var(--muted)}
.empty-icon{font-size:55px}
.empty-state h3{color:var(--text);margin-bottom:4px}
dialog{padding:0;border:0;background:transparent;color:var(--text)}
dialog::backdrop{background:rgba(0,0,0,.72);backdrop-filter:blur(7px)}
.modal{width:min(430px,calc(100vw - 28px));padding:24px;border-radius:22px;border:1px solid var(--line);background:#0c1929;box-shadow:var(--shadow);text-align:center}
.modal-logo{margin:auto;width:64px;height:64px}
.modal h2{margin:14px 0 5px}
.modal p{margin:0 0 14px;color:var(--muted)}
.error-text{min-height:21px;color:#ff9eaa;font-size:13px;text-align:left;margin-top:6px}
.qr-box{width:230px;height:230px;margin:18px auto;padding:15px;border-radius:16px;background:#fff;display:grid;place-items:center}
.qr-box img,.qr-box canvas{max-width:100%;height:auto!important}
.modal-actions{display:flex;gap:8px;margin-top:10px}
.modal-actions>*{flex:1}
.toast{position:fixed;left:50%;bottom:25px;z-index:30;transform:translate(-50%,30px);opacity:0;pointer-events:none;padding:12px 18px;border-radius:12px;color:#07111f;background:#eaf7ff;font-weight:900;transition:.2s}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:900px){
  .hero{grid-template-columns:1fr}
  .stats{order:-1}
  .file-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .toolbar{align-items:stretch;flex-direction:column}
  .search-box{min-width:0}
}
@media(max-width:560px){
  .app-shell{padding:14px}
  .brand p{display:none}
  .topbar{padding-bottom:4px}
  .hero{padding:24px 0}
  .hero h2{font-size:36px}
  .hero h2 br{display:none}
  .stats{padding:10px;border-radius:18px}
  .stats div{padding:8px}
  .stats strong{font-size:15px}
  .stats span{font-size:9px}
  .upload-options{grid-template-columns:1fr}
  .toolbar{margin-top:22px}
  .filters{overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .filter{white-space:nowrap}
  .file-grid{grid-template-columns:1fr}
  .file-preview{height:175px}
}