body {
    background: #f4f6f9;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.navbar { box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.bg-primary { background-color: #2A2774 !important; }

#statusBadge {
    font-size: .75rem;
    padding: .35rem .75rem;
    border-radius: 50px;
}
.status-connected    { background: #198754; color: #fff; }
.status-qr_pending   { background: #ffc107; color: #000; }
.status-disconnected { background: #dc3545; color: #fff; }
.status-unknown      { background: #6c757d; color: #fff; }

.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

#qrBox {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    background: #fff;
    border-radius: 12px;
    border: 2px dashed #dee2e6;
}

#qrBox img {
    max-width: 260px;
    border-radius: 8px;
}

.msg-in  { border-left: 3px solid #198754; }
.msg-out { border-left: 3px solid #2A2774; }

.stat-card {
    text-align: center;
    padding: 1.5rem;
}
.stat-card .num {
    font-size: 2rem;
    font-weight: 700;
    color: #2A2774;
}
.stat-card .label {
    font-size: .85rem;
    color: #6c757d;
}

.toast-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 9999;
}