:root {
    --bg: #0f172a;
    --panel: #ffffff;
    --muted: #64748b;
}
body {
    background: linear-gradient(180deg,#f8fafc 0,#eef2ff 100%);
    min-height: 100vh;
}
.card-soft {
    border: 0;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .08);
}
.secret-box {
    font-family: Consolas, monospace;
    letter-spacing: .5px;
}
.metric-card {
    background: linear-gradient(135deg,#111827,#1d4ed8);
    color: white;
}
.metric-card .metric-label { color: rgba(255,255,255,.75); }
.table > :not(caption) > * > * { vertical-align: middle; }
.form-text, .text-muted { color: var(--muted)!important; }
.badge-soft { background: #e2e8f0; color: #1e293b; }
.navbar-brand { letter-spacing: .3px; }