[data-usage-calculator] .usage-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(300px, 0.9fr);
    gap: 24px;
}

[data-usage-calculator] .usage-card,
[data-usage-calculator] .usage-side {
    background: #fff;
    border: 1px solid #e6ebf2;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.06);
}

[data-usage-calculator] .usage-eyebrow {
    display: inline-block;
    color: #0a4cff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

[data-usage-calculator] .usage-intro {
    color: #4b5c72;
    margin-bottom: 20px;
}

[data-usage-calculator] .usage-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

[data-usage-calculator] label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    font-weight: 700;
    color: #1f2937;
}

[data-usage-calculator] label span {
    color: #718096;
    font-weight: 500;
}

[data-usage-calculator] input,
[data-usage-calculator] select {
    border: 1px solid #cad4e2;
    border-radius: 10px;
    padding: 11px 12px;
    font-size: 14px;
    font-weight: 600;
    color: #102033;
}

[data-usage-calculator] .usage-check {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    border: 1px dashed #cbd5e1;
    border-radius: 10px;
    padding: 10px 12px;
}

[data-usage-calculator] .usage-section-title {
    margin: 22px 0 12px;
    font-size: 14px;
    font-weight: 800;
    color: #0f172a;
}

[data-usage-calculator] .usage-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

[data-usage-calculator] .usage-email-panel {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto;
    align-items: end;
    gap: 12px;
    margin-top: 14px;
    padding: 14px;
    border: 1px solid #dbe7ff;
    border-radius: 14px;
    background: #f7faff;
}

[data-usage-calculator] .usage-btn {
    border: 1px solid #c7d4e6;
    background: #f8fbff;
    border-radius: 999px;
    padding: 11px 18px;
    font-weight: 800;
    cursor: pointer;
}

[data-usage-calculator] .usage-btn-primary {
    background: #0a4cff;
    border-color: #0a4cff;
    color: #fff;
}

[data-usage-calculator] .usage-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}

[data-usage-calculator] .usage-error {
    margin-top: 14px;
    color: #b42318;
    font-weight: 700;
}

[data-usage-calculator] .usage-stale {
    margin-top: 12px;
    border: 1px solid #fed7aa;
    background: #fff7ed;
    color: #9a3412;
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 700;
}

[data-usage-calculator] .usage-summary-total {
    border-radius: 16px;
    background: linear-gradient(135deg, #07143a, #0a4cff);
    color: #fff;
    padding: 18px;
    margin-bottom: 16px;
}

[data-usage-calculator] .usage-summary-total strong {
    display: block;
    font-size: 30px;
    line-height: 1.1;
    margin-top: 8px;
}

[data-usage-calculator] .usage-tier {
    border: 1px solid #dbe7ff;
    background: #f7faff;
    border-radius: 14px;
    padding: 14px;
    margin-bottom: 14px;
    color: #243b64;
    font-size: 13px;
}

[data-usage-calculator] .usage-lines {
    display: grid;
    gap: 8px;
}

[data-usage-calculator] .usage-line {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    border-bottom: 1px solid #edf2f7;
    padding-bottom: 8px;
    font-size: 13px;
}

[data-usage-calculator] .usage-line span {
    color: #64748b;
}

[data-usage-calculator] .usage-line-total {
    margin-top: 6px;
    padding-top: 10px;
    border-top: 2px solid #0a4cff;
    border-bottom: 0;
    font-size: 14px;
}

[data-usage-calculator] .usage-assumptions {
    margin-top: 14px;
    padding-left: 18px;
    color: #52637a;
    font-size: 12px;
}

@media (max-width: 991px) {
    [data-usage-calculator] .usage-layout,
    [data-usage-calculator] .usage-grid,
    [data-usage-calculator] .usage-email-panel {
        grid-template-columns: 1fr;
    }
}