:root{
  --bg:#0f172a; --panel:#111827; --panel2:#1f2937; --fg:#e5e7eb; --muted:#94a3b8;
  --accent:#2a82ff; --danger:#ef4444; --ok:#10b981; --warn:#f59e0b;
  --border:#1f2937;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
a{color:var(--accent);text-decoration:none}
code{background:#0b1220;padding:2px 6px;border-radius:4px;color:#cbd5e1}

/* Login */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:30px;max-width:420px;width:100%;box-shadow:0 10px 40px rgba(0,0,0,.4)}
.login-card h1{margin:0 0 8px}
.login-card label{display:block;margin:14px 0 4px;font-size:13px;color:var(--muted)}
.login-card input{width:100%;padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:#0b1220;color:var(--fg)}
.login-card button{margin-top:18px;width:100%;padding:11px;border:0;border-radius:8px;background:var(--accent);color:#fff;font-weight:600;cursor:pointer}

/* Layout */
.admin{display:flex;min-height:100vh}
.sidebar{width:240px;background:#0b1220;border-right:1px solid var(--border);display:flex;flex-direction:column;padding:18px 12px;position:sticky;top:0;height:100vh}
.brand{font-size:16px;margin-bottom:18px;padding:4px 8px}
.sidebar nav{display:flex;flex-direction:column;gap:2px;flex:1}
.sidebar nav a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:#cbd5e1}
.sidebar nav a:hover{background:#111827;color:#fff}
.sidebar nav a.active{background:var(--accent);color:#fff}
.user{padding:10px;border-top:1px solid var(--border);font-size:13px}
.user .logout{display:inline-block;margin-top:6px;color:var(--danger)}
.content{flex:1;min-width:0;padding:18px 26px 60px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.topbar h1{margin:0;font-size:22px}
.page{display:flex;flex-direction:column;gap:18px}

/* Panel / Cards */
.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px}
.panel h2{margin:0 0 14px;font-size:16px;color:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:10px}
.card-head{display:flex;justify-content:space-between;align-items:center}
.card-head h3{margin:0;font-size:15px}
.card-body{font-size:13px;color:#cbd5e1;display:flex;flex-direction:column;gap:4px}
.card-actions{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}

/* Forms */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.form-grid .full{grid-column:1/-1}
.form-grid label{display:flex;flex-direction:column;font-size:12px;color:var(--muted);gap:4px}
.form-grid label.row{flex-direction:row;align-items:center;gap:8px;color:#cbd5e1;font-size:13px}
.form-grid input, .form-grid select, .form-grid textarea{padding:8px 10px;border-radius:8px;border:1px solid var(--border);background:#0b1220;color:var(--fg);font-size:14px}
.form-grid fieldset{border:1px solid var(--border);border-radius:8px;padding:8px 12px;display:flex;flex-wrap:wrap;gap:10px}
.form-grid fieldset legend{padding:0 6px;color:var(--muted);font-size:12px}

/* Buttons */
.btn{display:inline-block;padding:8px 12px;border-radius:8px;background:#1f2937;color:#e5e7eb;border:1px solid var(--border);cursor:pointer;font-size:13px}
.btn:hover{background:#2a3441}
.btn-primary{background:var(--accent);color:#fff;border-color:transparent}
.btn-danger{background:var(--danger);color:#fff;border-color:transparent}
.btn-small{padding:5px 9px;font-size:12px}

/* Tables */
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:8px 10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}
th{background:#0b1220;color:var(--muted);font-weight:600}
tr:hover td{background:#0f172a}

/* Badges */
.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#1f2937;color:#cbd5e1;font-size:11px}
.badge-ok{background:rgba(16,185,129,.15);color:#34d399}
.badge-off{background:rgba(148,163,184,.15);color:#94a3b8}
.badge-warn,.badge-warning{background:rgba(245,158,11,.15);color:#fbbf24}
.badge-error,.badge-critical{background:rgba(239,68,68,.15);color:#fca5a5}
.badge-info{background:rgba(42,130,255,.15);color:#93c5fd}

/* Flash */
.flash{padding:10px 14px;border-radius:8px;margin-bottom:12px}
.flash-success{background:rgba(16,185,129,.15);color:#34d399;border:1px solid rgba(16,185,129,.3)}
.flash-error{background:rgba(239,68,68,.15);color:#fca5a5;border:1px solid rgba(239,68,68,.3)}

.muted{color:var(--muted)}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}

/* Upload-Progress (chunked) */
.upload-progress{display:flex;flex-direction:column;gap:6px}
.upload-bar{height:10px;background:#0b1220;border:1px solid var(--border);border-radius:6px;overflow:hidden}
.upload-fill{height:100%;width:0;background:var(--accent);transition:width .15s linear}
.upload-text{font-size:12px;color:var(--muted)}

@media (max-width:900px){
  .admin{flex-direction:column}
  .sidebar{position:relative;height:auto;width:100%}
  .sidebar nav{flex-direction:row;flex-wrap:wrap}
}