/* ── Responsive: Tablet (<=768px) ── */
@media (max-width: 768px) {
    .page-header {
        padding: 20px 0;
    }

    .page-header h1 {
        font-size: 22px;
    }

    .page-body {
        padding-bottom: 24px;
    }

    .page-shell {
        padding: 16px 0;
    }

    .container {
        width: calc(100% - 24px);
    }

    h1 { font-size: 20px; }
    h2 { font-size: 16px; }

    .card {
        padding: 16px;
        border-radius: var(--radius-m);
    }

    .row > .card {
        flex: 1 1 100% !important;
        min-width: 0;
    }

    .row > .btn {
        flex: 1 1 auto;
    }

    .chart-row {
        grid-template-columns: 80px 1fr 48px;
        gap: 8px;
    }
}

/* ── Responsive: Mobile (<=480px) ── */
@media (max-width: 480px) {
    .page-header {
        padding: 16px 0;
    }

    .page-header h1 {
        font-size: 18px;
    }

    .page-body {
        padding-bottom: 16px;
    }

    .page-shell {
        padding: 12px 0;
    }

    .container {
        width: calc(100% - 16px);
    }

    .card {
        padding: 14px;
        border-radius: var(--radius-s);
    }

    .row {
        gap: 8px;
    }

    .row > .btn {
        flex: 1 1 100%;
    }

    .chart-row {
        grid-template-columns: 1fr;
    }

    .chart-label {
        margin-bottom: -8px;
    }

    .login-logo {
        width: 56px;
        height: 56px;
        font-size: 24px;
        border-radius: 14px;
    }
}