:root{
  --bg:#f4f5fa;
  --card:#ffffff;
  --ink:#1b1f3b;
  --ink-2:#4a4f6a;
  --muted:#8b90a7;
  --border:#e9ebf3;
  --border-2:#eef0f6;
  --primary:#673de6;
  --primary-ink:#5327d1;
  --primary-soft:#f0ecfe;
  --green:#12b76a;
  --green-soft:#e7f8f0;
  --red:#f04438;
  --red-soft:#fdecea;
  --amber:#f79009;
  --amber-soft:#fef3e6;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);
  --radius:14px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--ink);
  font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}

/* ---------- Layout ---------- */
.app{display:flex;min-height:100vh}
.sidebar{
  width:250px;background:var(--card);border-right:1px solid var(--border);
  display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;z-index:40;
  transition:transform .2s ease;
}
.brand{display:flex;align-items:center;gap:11px;padding:20px 22px;border-bottom:1px solid var(--border-2)}
.brand .logo{width:36px;height:36px;border-radius:10px;background:var(--primary);flex:none;
  display:flex;align-items:center;justify-content:center;box-shadow:0 2px 6px rgba(103,61,230,.35)}
.brand .logo svg{width:20px;height:20px}
.brand .name{font-weight:700;font-size:15px}
.brand .sub{font-size:11px;color:var(--muted);font-weight:500}
.nav{padding:14px 12px;display:flex;flex-direction:column;gap:3px;flex:1}
.nav-label{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);
  padding:12px 12px 6px;font-weight:600}
.nav-item{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;
  color:var(--ink-2);font-weight:500;font-size:13.5px;border:none;background:none;width:100%;text-align:left}
.nav-item svg{width:18px;height:18px;flex:none;stroke:var(--muted)}
.nav-item:hover{background:var(--bg)}
.nav-item.active{background:var(--primary-soft);color:var(--primary-ink);font-weight:600}
.nav-item.active svg{stroke:var(--primary)}
.sidebar-foot{padding:14px;border-top:1px solid var(--border-2)}
.user-row{display:flex;align-items:center;gap:10px;padding:8px 6px}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-soft);color:var(--primary-ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex:none}
.user-mail{font-size:12px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.main{flex:1;margin-left:250px;min-width:0;display:flex;flex-direction:column}
.topbar{height:64px;background:var(--card);border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:30}
.topbar h1{font-size:17px;margin:0;font-weight:700}
.topbar .sub{font-size:12px;color:var(--muted);margin-top:1px}
.topbar-actions{display:flex;align-items:center;gap:10px}
.hamburger{display:none;background:none;border:1px solid var(--border);border-radius:8px;padding:7px}
.hamburger svg{width:18px;height:18px;stroke:var(--ink)}
.icon-toggle{display:flex;background:none;border:1px solid var(--border);border-radius:8px;padding:7px}
.icon-toggle svg{width:18px;height:18px;stroke:var(--ink-2)}
.icon-toggle:hover{background:var(--bg)}
.signout-btn{width:100%;justify-content:center;margin-top:6px}

/* Sidebar collapse (desktop) */
.brand-text{min-width:0;transition:opacity .15s}
.app.collapsed .sidebar{width:74px}
.app.collapsed .main{margin-left:74px}
.app.collapsed .brand{justify-content:center;padding:20px 0}
.app.collapsed .brand-text,
.app.collapsed .nav-txt,
.app.collapsed .nav-label{display:none}
.app.collapsed .nav-item{justify-content:center;padding:11px 0}
.app.collapsed .user-row{justify-content:center}
.app.collapsed .signout-btn{padding:9px 0}
.content{padding:24px;max-width:1240px;width:100%}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;padding:9px 15px;border-radius:9px;
  border:1px solid var(--border);background:var(--card);color:var(--ink);font-weight:600;font-size:13px}
.btn:hover{background:var(--bg)}
.btn svg{width:15px;height:15px;stroke:currentColor}
.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-ink)}
.btn-danger{background:var(--card);border-color:var(--red);color:var(--red)}
.btn-danger:hover{background:var(--red-soft)}
.btn-sm{padding:6px 11px;font-size:12px;border-radius:8px}
.btn:disabled{opacity:.55;cursor:not-allowed}

/* ---------- Cards ---------- */
.grid{display:grid;gap:16px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:18px 20px}
.card-head{display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--border-2)}
.card-head h3{margin:0;font-size:14px;font-weight:700}
.card-head .hint{font-size:12px;color:var(--muted)}

/* stat card */
.stat{display:flex;flex-direction:column;gap:12px}
.stat-top{display:flex;align-items:center;justify-content:space-between}
.stat-label{font-size:12.5px;color:var(--muted);font-weight:600}
.stat-ico{width:34px;height:34px;border-radius:9px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center}
.stat-ico svg{width:18px;height:18px;stroke:var(--primary)}
.stat-val{font-size:26px;font-weight:700;letter-spacing:-.5px}
.stat-val small{font-size:14px;color:var(--muted);font-weight:600}
.stat-sub{font-size:12px;color:var(--ink-2)}

/* progress bar */
.bar{height:8px;border-radius:6px;background:var(--border);overflow:hidden}
.bar > span{display:block;height:100%;border-radius:6px;background:var(--primary);transition:width .4s ease}
.bar.green>span{background:var(--green)}
.bar.amber>span{background:var(--amber)}
.bar.red>span{background:var(--red)}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;color:var(--muted);
  font-weight:600;padding:11px 20px;border-bottom:1px solid var(--border-2);white-space:nowrap;background:#fbfbfe}
td{padding:12px 20px;border-bottom:1px solid var(--border-2);vertical-align:middle}
tr:last-child td{border-bottom:none}
tbody tr:hover{background:#fbfbfe}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px}
.tname{font-weight:600}

/* ---------- Badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:20px;
  font-size:11.5px;font-weight:600;line-height:1.4}
.badge .dot{width:6px;height:6px;border-radius:50%;background:currentColor}
.b-green{background:var(--green-soft);color:#087443}
.b-red{background:var(--red-soft);color:#b42318}
.b-amber{background:var(--amber-soft);color:#b54708}
.b-grey{background:#f1f2f6;color:#5f6478}
.b-purple{background:var(--primary-soft);color:var(--primary-ink)}

/* ---------- Misc ---------- */
.section{margin-bottom:22px}
.section-title{font-size:15px;font-weight:700;margin:0 0 14px}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.muted{color:var(--muted)}
.kv{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px solid var(--border-2);font-size:13px}
.kv:last-child{border:none}
.kv .k{color:var(--muted)}
.kv .v{font-weight:600}
.loading{color:var(--muted);font-size:13px;padding:20px;text-align:center}

/* Skeletons */
.skel{position:relative;overflow:hidden;background:#e9ebf3;border-radius:7px}
.skel::after{content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.65),transparent);animation:shimmer 1.35s infinite}
@keyframes shimmer{100%{transform:translateX(100%)}}
.sk-line{height:11px;border-radius:6px}
.sk-card{padding:18px 20px}
.sk-donut{width:130px;height:130px;border-radius:50%}
.sk-chart{height:100%;width:100%;border-radius:10px}
td .skel,.sk-row .skel{display:block}
.hidden{display:none!important}
.spin{animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* Charts */
.chart-box{position:relative;height:240px;width:100%}
.chart-box.tall{height:300px}
.donut-row{display:flex;justify-content:space-around;gap:12px;flex-wrap:wrap}
.donut-item{display:flex;flex-direction:column;align-items:center;gap:8px;flex:1;min-width:110px}
.chart-donut{position:relative;width:130px;height:130px}
.donut-label{font-size:12.5px;font-weight:600;color:var(--ink-2)}
@media(max-width:560px){.chart-box{height:220px}.chart-donut{width:110px;height:110px}}

/* R2 file rows */
.file-row{display:flex;align-items:center;justify-content:space-between;padding:11px 20px;border-bottom:1px solid var(--border-2);gap:12px}
.file-row:last-child{border:none}
.file-meta{min-width:0}
.file-name{font-weight:600;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-sub{font-size:11.5px;color:var(--muted)}
.file-actions{display:flex;gap:8px;flex:none}
.icon-btn{width:32px;height:32px;border-radius:8px;border:1px solid var(--border);background:var(--card);
  display:flex;align-items:center;justify-content:center;padding:0}
.icon-btn svg{width:15px;height:15px;stroke:var(--ink-2)}
.icon-btn:hover{background:var(--bg)}
.icon-btn.danger:hover{background:var(--red-soft);border-color:var(--red)}
.icon-btn.danger:hover svg{stroke:var(--red)}

.date-item{border:1px solid var(--border);border-radius:12px;margin-bottom:10px;overflow:hidden}
.date-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;gap:12px;cursor:pointer;background:var(--card)}
.date-head:hover{background:#fbfbfe}
.date-title{font-weight:700;font-size:14px}
.date-sub{font-size:12px;color:var(--muted)}
.date-body{border-top:1px solid var(--border-2);background:#fcfcfe}
.chev{width:16px;height:16px;stroke:var(--muted);transition:transform .2s}
.date-item.open .chev{transform:rotate(90deg)}

/* log */
.logbox{background:#1b1f3b;color:#d7d9ec;border-radius:10px;padding:14px 16px;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:12px;line-height:1.7;max-height:260px;overflow:auto;white-space:pre-wrap;word-break:break-word}

/* toast */
#toast{position:fixed;bottom:22px;right:22px;z-index:100;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--ink);color:#fff;padding:12px 16px;border-radius:10px;font-size:13px;font-weight:500;
  box-shadow:0 8px 24px rgba(16,24,40,.18);max-width:340px;animation:slidein .2s ease}
.toast.ok{background:#0e9e5e}.toast.err{background:#d92d20}
@keyframes slidein{from{transform:translateY(10px);opacity:0}to{transform:none;opacity:1}}

/* overlay for mobile drawer */
#overlay{position:fixed;inset:0;background:rgba(16,24,40,.4);z-index:35;display:none}

/* ---------- Login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(1200px 500px at 50% -10%,#efeafe 0%,var(--bg) 55%)}
.login-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--border);
  border-radius:18px;box-shadow:0 10px 40px rgba(16,24,40,.08);padding:34px 30px}
.login-brand{display:flex;flex-direction:column;align-items:center;gap:12px;margin-bottom:24px}
.login-brand .logo{width:52px;height:52px;border-radius:14px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(103,61,230,.4)}
.login-brand .logo svg{width:28px;height:28px}
.login-brand h1{font-size:19px;margin:4px 0 0}
.login-brand p{margin:0;font-size:13px;color:var(--muted)}
.field{margin-bottom:16px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink-2);margin-bottom:7px}
.field input{width:100%;padding:11px 13px;border:1px solid var(--border);border-radius:10px;font-size:14px;
  background:#fcfcfe;color:var(--ink);outline:none;transition:border .15s,box-shadow .15s}
.field input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft);background:#fff}
.login-card .btn-primary{width:100%;justify-content:center;padding:12px;font-size:14px;margin-top:4px}
.err-box{background:var(--red-soft);color:#b42318;border:1px solid #f6cfca;border-radius:10px;
  padding:10px 13px;font-size:13px;margin-bottom:16px;font-weight:500}
.login-foot{text-align:center;margin-top:20px;font-size:12px;color:var(--muted)}

/* ---------- Responsive ---------- */
@media(max-width:1000px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:820px){
  .sidebar{transform:translateX(-100%);width:250px}
  .sidebar.open{transform:none}
  .main,.app.collapsed .main{margin-left:0}
  .app.collapsed .sidebar{width:250px}
  .app.collapsed .brand-text,.app.collapsed .nav-txt,.app.collapsed .nav-label{display:block}
  .app.collapsed .nav-item{justify-content:flex-start;padding:10px 12px}
  .hamburger{display:flex}
  .icon-toggle{display:none}
  .grid-2{grid-template-columns:1fr}
  .content{padding:16px}
  .sidebar.open ~ #overlay,#overlay.show{display:block}
}
@media(max-width:560px){
  .grid-4{grid-template-columns:1fr}
  .topbar{padding:0 16px}
  .topbar .sub{display:none}
}