* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 20px 60px;
}
header.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    background: #111827;
    border-bottom: 1px solid #1f2937;
}
header.topbar .brand {
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 0.02em;
    color: #38bdf8;
}
header.topbar nav a {
    color: #94a3b8;
    text-decoration: none;
    margin-left: 20px;
    font-size: 14px;
}
header.topbar nav a:hover, header.topbar nav a.active {
    color: #f8fafc;
}
h1 { font-size: 24px; margin-bottom: 4px; }
p.subtitle { color: #94a3b8; margin-top: 0; margin-bottom: 24px; }

.card {
    background: #111827;
    border: 1px solid #1f2937;
    border-radius: 10px;
    padding: 24px;
    margin-bottom: 24px;
}
.card h2 { margin-top: 0; font-size: 16px; color: #f1f5f9; }

.flash {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}
.flash.success { background: #064e3b; color: #a7f3d0; border: 1px solid #065f46; }
.flash.error { background: #450a0a; color: #fecaca; border: 1px solid #7f1d1d; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid #1f2937; font-size: 14px; }
th { color: #94a3b8; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    background: #1e3a8a;
    color: #bfdbfe;
}

form .field { margin-bottom: 16px; }
form label { display: block; font-size: 13px; color: #cbd5e1; margin-bottom: 6px; }
form input[type=text], form input[type=email], form input[type=password], form input[type=number], form select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid #334155;
    background: #0b1220;
    color: #e2e8f0;
    font-size: 14px;
}
form input:focus, form select:focus { outline: none; border-color: #38bdf8; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.btn {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 6px;
    border: none;
    background: #0ea5e9;
    color: #04202e;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: #38bdf8; }
.btn.secondary { background: #1e293b; color: #e2e8f0; border: 1px solid #334155; }
.btn.danger { background: #7f1d1d; color: #fecaca; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.helper { color: #64748b; font-size: 12px; margin-top: 4px; }
code { background: #1e293b; padding: 2px 6px; border-radius: 4px; font-size: 12px; }