:root{
  --bg:#f6f8fb; --panel:#ffffff; --side:#eef2f7; --ink:#1c2533; --muted:#6b7686; --line:#dfe5ee;
  --brand:#0f6e7a; --brand-2:#14a3a8; --brand-soft:#dbf1f2; --danger:#c43c3c; --hover:#e6ebf2; --sel:#cfe9eb;
  --shadow:0 6px 24px rgba(20,35,60,.12); --r:12px;
  font-family:"IBM Plex Sans Thai",system-ui,-apple-system,"Segoe UI",sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#12161d; --panel:#1a2029; --side:#161b23; --ink:#e7ecf3; --muted:#97a2b3; --line:#2a3240;
  --brand:#3cc2c7; --brand-2:#5fd6d9; --brand-soft:#173439; --hover:#232b37; --sel:#1d3a40; --danger:#ef6b6b;
  --shadow:0 6px 24px rgba(0,0,0,.45);
}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-size:14.5px}
button,input,select{font:inherit;color:inherit}
a{color:var(--brand)}
code{background:var(--hover);padding:1px 6px;border-radius:5px;font-size:.92em}
.muted{color:var(--muted)} .small{font-size:12.5px}

.btn{border:1px solid var(--line);background:var(--panel);padding:8px 16px;border-radius:999px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{filter:brightness(1.08)}
.btn.danger{color:var(--danger)}
.btn.sm{padding:5px 12px;font-size:13px}
.btn.wide{width:100%;justify-content:center;padding:11px}
.icon-btn{border:0;background:none;cursor:pointer;width:34px;height:34px;border-radius:50%;font-size:17px;line-height:1;color:var(--muted)}
.icon-btn:hover{background:var(--hover);color:var(--ink)}

/* login */
.login-body{display:grid;place-items:center;background:linear-gradient(135deg,var(--brand-soft),var(--bg))}
.login-card{background:var(--panel);padding:36px 32px;border-radius:18px;box-shadow:var(--shadow);width:min(380px,92vw);display:flex;flex-direction:column;gap:12px;text-align:center}
.login-card h1{margin:4px 0 0;font-size:24px}.login-card p{margin:0 0 8px}
.login-card img{margin:0 auto}
label{display:flex;flex-direction:column;gap:5px;text-align:left;font-size:13px;color:var(--muted);margin-bottom:10px}
label input,label select,.copy-row input{padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);font-size:14.5px;color:var(--ink)}
label input:focus,select:focus,.search input:focus{outline:2px solid var(--brand-2);outline-offset:-1px}
label.chk{flex-direction:row;align-items:center;gap:8px;color:var(--ink)}
.alert{background:#fde8e8;color:#9b2c2c;padding:9px 12px;border-radius:10px;font-size:13px}

/* layout */
.app{display:grid;grid-template-columns:256px 1fr;height:100vh}
.sidebar{background:var(--side);padding:14px 12px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:19px;padding:4px 10px 14px}
.new-wrap{position:relative;margin-bottom:10px}
.btn.new{box-shadow:0 1px 4px rgba(0,0,0,.12);padding:12px 22px;border-radius:16px;font-weight:500;background:var(--panel)}
.btn.new .plus{font-size:22px;line-height:1;color:var(--brand)}
.nav{display:flex;flex-direction:column}
.nav a{padding:8px 14px;border-radius:999px;cursor:pointer;text-decoration:none;color:var(--ink);display:flex;align-items:center;gap:8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav a:hover{background:var(--hover)}
.nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav .ro{font-size:10px;border:1px solid var(--line);border-radius:4px;padding:0 4px;color:var(--muted)}
.nav .pad{padding:4px 14px}
.nav-title{font-size:12px;color:var(--muted);padding:14px 14px 4px;text-transform:uppercase;letter-spacing:.04em}
.storage{margin-top:auto;padding:14px 10px 4px}
.bar{height:6px;background:var(--line);border-radius:4px;overflow:hidden;margin:7px 0 5px}
.bar i{display:block;height:100%;background:var(--brand);transition:width .25s}

.main{display:flex;flex-direction:column;min-width:0;position:relative;background:var(--panel);border-radius:18px 0 0 0;margin-top:8px}
.topbar{display:flex;align-items:center;gap:12px;padding:10px 18px}
.search{flex:1;max-width:720px;display:flex;align-items:center;gap:8px;background:var(--side);border-radius:999px;padding:0 16px}
.search{min-width:0}
.search input{min-width:0;width:100%;border:0;background:none;padding:11px 0;flex:1;font-size:15px;outline:none}
.top-actions{display:flex;align-items:center;gap:6px;margin-left:auto}
.top-actions select{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:6px 10px;font-size:13px}
.user-wrap{position:relative}
.avatar{width:36px;height:36px;border-radius:50%;border:0;background:var(--brand);color:#fff;font-weight:600;cursor:pointer;margin-left:6px}
.toolbar{display:flex;align-items:center;gap:10px;padding:6px 22px 8px;min-height:48px;flex-wrap:wrap}
.crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:2px;flex:1;min-width:0}
.crumb{border:0;background:none;font-size:19px;padding:4px 10px;border-radius:999px;cursor:pointer;color:var(--muted)}
.crumb:hover{background:var(--hover)} .crumb.last{color:var(--ink)} .crumb.drop{background:var(--sel)}
.sep{color:var(--muted)}
.toolbar-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.badge{font-size:12px;padding:3px 10px;border-radius:999px;background:var(--hover);color:var(--muted)}
.content{flex:1;overflow-y:auto;padding:4px 22px 90px}

/* grid */
.sec{font-size:13.5px;font-weight:500;margin:14px 2px 10px;color:var(--ink)}
.folders{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.item{user-select:none;cursor:default}
.folder{display:flex;align-items:center;gap:10px;background:var(--side);border-radius:var(--r);padding:6px 4px 6px 14px;min-height:48px}
.folder:hover,.card:hover{background:var(--hover)}
.card{background:var(--side);border-radius:var(--r);padding:0 8px 4px;display:flex;flex-direction:column}
.card .thumb{height:150px;margin:0 -0px;background:var(--panel);border-radius:8px;display:grid;place-items:center;overflow:hidden;order:2;margin-bottom:6px}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card-foot{display:flex;align-items:center;gap:8px;padding:6px 0 6px 6px;order:1}
.big-ico{font-size:54px}
.item .txt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item .b{font-size:12px}
.item.sel{background:var(--sel)!important;outline:1px solid var(--brand-2)}
.item.drop{outline:2px dashed var(--brand);background:var(--sel)}
.item .ico{font-size:19px}

/* list */
.content.list .row{display:grid;grid-template-columns:1fr 170px 110px 40px;align-items:center;gap:10px;padding:6px 10px;border-bottom:1px solid var(--line)}
.content.list .row.head{font-size:13px;color:var(--muted);position:sticky;top:0;background:var(--panel);z-index:1}
.content.list .row.item:hover{background:var(--hover)}
.content.list .nm{display:flex;align-items:center;gap:10px;min-width:0}

.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:90px 20px;text-align:center}
.empty-ico{font-size:64px;opacity:.85}

/* menus */
.menu{position:absolute;background:var(--panel);border-radius:10px;box-shadow:var(--shadow);padding:6px 0;min-width:220px;z-index:50;border:1px solid var(--line)}
.menu.right{right:0;top:44px}
.new-wrap .menu{top:54px;left:0}
.menu.ctx{position:fixed}
.menu button,.menu a{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 16px;cursor:pointer;text-decoration:none;color:var(--ink);font-size:14px}
.menu button:hover,.menu a:hover{background:var(--hover)}
.menu .danger{color:var(--danger)}
.menu-head{padding:8px 16px 10px;border-bottom:1px solid var(--line);margin-bottom:4px}

/* dialog */
dialog{border:0;border-radius:16px;padding:0;box-shadow:var(--shadow);background:var(--panel);color:var(--ink);width:min(460px,94vw)}
dialog::backdrop{background:rgba(10,20,30,.35)}
dialog form{padding:22px 24px 18px}
dialog h3{margin:0 0 14px;font-weight:600}
.dlg-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}
.tree{max-height:320px;overflow:auto;border:1px solid var(--line);border-radius:10px;padding:4px 0}
.tree-row{flex-direction:row;align-items:center;gap:8px;padding:6px 12px;margin:0;color:var(--ink);cursor:pointer;font-size:14px}
.tree-row:hover{background:var(--hover)}
.copy-row{display:flex;gap:8px;margin-bottom:10px}.copy-row input{flex:1}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}

/* viewer */
.viewer{position:fixed;inset:0;background:rgba(8,12,18,.92);z-index:80;display:flex;flex-direction:column}
.viewer-bar{display:flex;align-items:center;gap:10px;padding:10px 16px;color:#fff}
.viewer-bar .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.viewer-bar .icon-btn{color:#fff}
.viewer-body{flex:1;display:grid;place-items:center;overflow:auto;padding:10px}
.viewer-body img,.viewer-body video{max-width:96vw;max-height:84vh;border-radius:6px}
.viewer-body iframe{width:min(1000px,96vw);height:86vh;border:0;background:#fff;border-radius:6px}
.viewer-body pre{background:#fff;color:#111;padding:20px;border-radius:8px;max-width:min(1000px,96vw);max-height:84vh;overflow:auto;white-space:pre-wrap;margin:0}
.no-prev{color:#fff;text-align:center}

/* toasts & uploads */
.toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:100}
.toast{background:#263241;color:#fff;padding:10px 18px;border-radius:10px;box-shadow:var(--shadow);font-size:14px;animation:pop .2s}
.toast.err{background:var(--danger)}
@keyframes pop{from{transform:translateY(8px);opacity:0}}
.uploads{position:fixed;right:20px;bottom:20px;width:330px;background:var(--panel);border-radius:12px;box-shadow:var(--shadow);padding:12px 16px;z-index:90;display:flex;flex-direction:column;gap:12px;border:1px solid var(--line)}
.up-row.err{color:var(--danger)}
.dropzone{position:absolute;inset:8px;border:3px dashed var(--brand);border-radius:16px;background:color-mix(in srgb,var(--brand-soft) 85%,transparent);display:none;place-items:center;font-size:20px;font-weight:600;color:var(--brand);pointer-events:none;z-index:40}
.dropzone.on{display:grid}

/* admin */
.tbl{width:100%;border-collapse:collapse;margin-top:6px}
.tbl th,.tbl td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);font-size:14px}
.tbl th{color:var(--muted);font-weight:500;font-size:13px}
.tbl tr.off td{opacity:.5}
.hint{background:var(--brand-soft);border-radius:12px;padding:14px 16px;line-height:1.8;font-size:13.5px;margin:6px 0 14px}

.tbl-wrap{overflow-x:auto}
.tbl td{vertical-align:top}
.nowrap{white-space:nowrap}

/* departments & permissions */
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none;margin-right:8px;vertical-align:middle}
.chip{display:inline-block;background:var(--hover);border-radius:999px;padding:2px 10px;font-size:12.5px;margin:2px 0;white-space:nowrap}
.role{display:inline-block;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;white-space:nowrap}
.role-viewer{background:#e8eef7;color:#3d5a80}
.role-editor{background:#dff3e4;color:#2c6e3f}
.role-manager{background:#fbe9d0;color:#9a5a12}
@media (prefers-color-scheme:dark){
  .role-viewer{background:#22324a;color:#a9c3ea}.role-editor{background:#1f3a29;color:#9fdcb1}.role-manager{background:#46331a;color:#f2c58a}
}
.where{display:block;font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis}
dialog.wide{width:min(640px,96vw)}
.role-help{display:grid;gap:6px;background:var(--side);border-radius:10px;padding:10px 12px;margin-bottom:12px}
#permRows{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}
.perm-row{display:grid;grid-template-columns:1fr 130px 34px;gap:8px;align-items:center}
.perm-row select{padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);min-width:0}
.field-title{font-size:13px;color:var(--muted);margin:4px 0 6px}
.checks{display:flex;flex-wrap:wrap;gap:4px 16px;margin-bottom:12px}
.checks.scroll{flex-direction:column;flex-wrap:nowrap;max-height:240px;overflow:auto;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.checks .chk{margin:0;padding:3px 0}
.filter{width:100%;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);margin-bottom:6px}
.colors{display:flex;gap:10px;margin-bottom:12px}
.sw{margin:0;cursor:pointer}.sw input{display:none}
.sw span{display:block;width:28px;height:28px;border-radius:50%;border:3px solid transparent}
.sw input:checked+span{border-color:var(--ink)}
.menu hr{border:0;border-top:1px solid var(--line);margin:5px 0}
.nav .dot{margin-right:2px}

.err-msg{color:var(--danger);font-size:12.5px;margin-top:3px;max-width:420px}
.browser{border:1px solid var(--line);border-radius:12px;margin:-2px 0 12px;overflow:hidden;background:var(--bg)}
.br-go{display:flex;gap:6px;padding:8px;border-bottom:1px solid var(--line)}
.br-go input,.br-login input{flex:1;min-width:0;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.br-list{max-height:220px;overflow:auto}
.br-row{display:block;width:100%;text-align:left;border:0;background:none;padding:8px 14px;cursor:pointer;font-size:14px}
.br-row:hover{background:var(--hover)}
.br-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px;border-top:1px solid var(--line)}
.br-foot .muted{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.br-login{padding:10px;display:flex;flex-direction:column;gap:8px}
.grid3{display:grid;grid-template-columns:1fr 1fr auto;gap:6px}
.pad{padding:8px 12px}

/* share page */
.share-body{min-height:100%}
.share-head{display:flex;align-items:center;gap:10px;padding:14px 22px;background:var(--panel);border-bottom:1px solid var(--line)}
.share-main{max-width:900px;margin:30px auto;padding:0 16px}
.share-file{background:var(--panel);border-radius:16px;padding:26px;text-align:center;box-shadow:var(--shadow)}
.share-preview{max-width:100%;max-height:65vh;border-radius:10px}
.share-preview.pdf{width:100%;height:65vh;border:0}
.share-folder-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.share-table{width:100%;background:var(--panel);border-radius:12px;border-collapse:collapse;box-shadow:var(--shadow)}
.share-table td{padding:11px 14px;border-bottom:1px solid var(--line)}

.only-mobile{display:none}
@media (max-width:820px){
  .app{grid-template-columns:1fr}
  .sidebar{position:fixed;inset:0 auto 0 0;width:270px;z-index:70;transform:translateX(-100%);transition:transform .2s}
  .sidebar.open{transform:none;box-shadow:var(--shadow)}
  .top-actions{gap:2px}
  .only-mobile{display:inline-block}
  .main{border-radius:0;margin:0}
  .topbar{padding:8px 10px}
  .top-actions select{display:none}
  .toolbar,.content{padding-left:12px;padding-right:12px}
  .folders,.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .card .thumb{height:110px}
  .content.list .row{grid-template-columns:1fr 80px 36px}
  .content.list .row>span:nth-child(2){display:none}
  .tbl{display:block;overflow-x:auto}
  .uploads{left:12px;right:12px;width:auto}
}

.tbl td:first-child{min-width:130px}

/* PWA */
.install-card{display:grid;grid-template-columns:36px 1fr auto auto;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px;margin:10px 0 0}
.install-card img{border-radius:8px}
.install-card .icon-btn{width:28px;height:28px;font-size:13px}
.steps{padding-left:20px;line-height:1.9;margin:0 0 10px}
.kbd{display:inline-block;border:1px solid var(--line);border-radius:6px;padding:0 6px;background:var(--side)}
.alert.info{background:var(--brand-soft);color:var(--brand)}
@media (display-mode: standalone){
  .sidebar{padding-top:max(14px, env(safe-area-inset-top))}
  .topbar{padding-top:max(10px, env(safe-area-inset-top))}
}
.app{height:100dvh}
.content{padding-bottom:max(90px, calc(env(safe-area-inset-bottom) + 70px))}
@media (max-width:820px){ .hide-sm{display:none} }

/* v2.3: เวอร์ชัน / สิทธิ์โฟลเดอร์ / สำรองข้อมูล / ความปลอดภัย */
.vchip{font-size:10.5px;font-weight:600;border:1px solid var(--line);border-radius:6px;padding:0 5px;color:var(--muted);margin-left:2px}
.badge.lock{background:#fbe9d0;color:#9a5a12}
.chip.warn{background:#fde8e8;color:#9b2c2c}
.chip.ok{background:#dff3e4;color:#2c6e3f}
@media (prefers-color-scheme:dark){.badge.lock{background:#46331a;color:#f2c58a}.chip.warn{background:#4a2222;color:#f5b3b3}.chip.ok{background:#1f3a29;color:#9fdcb1}}
.tree-row.dim{opacity:.45}
.restrict-box{align-items:flex-start;background:var(--side);border-radius:10px;padding:10px 12px;margin-bottom:6px}
.restrict-box input{margin-top:4px}
.chk.opt{align-items:flex-start;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:8px;cursor:pointer}
.chk.opt input{margin-top:4px}
.chk.opt:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
ul.dup{margin:0 0 12px;padding-left:20px;max-height:140px;overflow:auto;font-size:13.5px}
.vtbl tr.cur td{background:var(--brand-soft)}
.banner{display:flex;align-items:center;gap:12px;justify-content:space-between;flex-wrap:wrap;background:#fff4e0;color:#7a4b00;border:1px solid #f3d29a;border-radius:12px;padding:10px 14px;margin:0 22px 6px;font-size:14px}
@media (prefers-color-scheme:dark){.banner{background:#3a2c12;color:#f2c58a;border-color:#5a4520}}
.bk-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;margin:6px 0 14px}
.bk-card{background:var(--side);border-radius:12px;padding:14px 16px;display:flex;flex-direction:column;gap:6px}
.bk-val{font-size:15px;font-weight:500;word-break:break-all}
.warn-hint{background:#fff4e0;color:#7a4b00}
@media (prefers-color-scheme:dark){.warn-hint{background:#3a2c12;color:#f2c58a}}