.pace-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.pace-tab {
    padding: 0.45rem 1rem;
    border: 1px solid #dbe2ea;
    border-radius: 999px;
    background: #fff;
    color: #666;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.pace-tab.active {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}

.pace-tab:hover:not(.active) {
    color: #2563eb;
    border-color: #2563eb;
}

.pace-form {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.pace-form-finish {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pace-panel {
    margin-bottom: 1rem;
}

.pace-status {
    margin-top: 1rem;
    padding: 0.8rem 1rem;
    border: 1px solid #e8eaf0;
    border-radius: 8px;
    background: #f8f9fb;
    color: #666;
    font-size: 0.88rem;
    line-height: 1.7;
}

.pace-status.success {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #047857;
}

.pace-status.error {
    background: #fef2f2;
    border-color: #fecaca;
    color: #b91c1c;
}

.pace-result {
    margin-top: 1.25rem;
}

.pace-summary-card {
    padding: 1.4rem 1.5rem;
    border-radius: 12px;
    background: linear-gradient(135deg, #eff6ff 0%, #f8fbff 100%);
    border: 1px solid #dbeafe;
}

.pace-summary-label {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.45rem;
}

.pace-summary-value {
    color: #2563eb;
    font-family: 'Fira Code', monospace;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.pace-summary-sub {
    margin-top: 0.55rem;
    color: #5b6472;
    font-size: 0.85rem;
}

.pace-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
    margin-top: 1rem;
}

.pace-metric {
    padding: 1rem;
    border: 1px solid #e8eaf0;
    border-radius: 10px;
    background: #fff;
}

.pace-metric-label {
    display: block;
    color: #666;
    font-size: 0.84rem;
    margin-bottom: 0.4rem;
}

.pace-metric-value {
    color: #333;
    font-family: 'Fira Code', monospace;
    font-size: 1rem;
    word-break: break-word;
}

.pace-forecast {
    margin-top: 1rem;
    padding: 1rem 1.05rem;
    border: 1px solid #e8eaf0;
    border-radius: 10px;
    background: #fff;
}

.pace-forecast-title {
    color: #333;
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 0.85rem;
}

.pace-forecast-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.85rem;
}

.pace-forecast-item {
    padding: 0.85rem 0.9rem;
    border-radius: 8px;
    background: #f8f9fb;
    border: 1px solid #edf0f5;
}

.pace-forecast-item span {
    display: block;
    color: #666;
    font-size: 0.82rem;
    margin-bottom: 0.35rem;
}

.pace-forecast-item strong {
    color: #2563eb;
    font-family: 'Fira Code', monospace;
    font-size: 0.96rem;
    line-height: 1.45;
    word-break: break-word;
}

.pace-copy-actions {
    margin-top: 1rem;
}

.formula-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.formula-row {
    display: grid;
    grid-template-columns: 160px 1fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 0.85rem 1rem;
    border: 1px solid #e8eaf0;
    border-radius: 8px;
    background: #fff;
}

.formula-name {
    color: #333;
    font-size: 0.9rem;
    font-weight: 600;
}

.formula-expr {
    color: #2563eb;
    font-family: 'Fira Code', monospace;
    font-size: 0.88rem;
}

.formula-example {
    color: #777;
    font-size: 0.85rem;
}

@media (max-width: 900px) {
    .pace-form,
    .pace-form-finish {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .pace-forecast-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .pace-form,
    .pace-form-finish {
        grid-template-columns: 1fr;
    }

    .pace-metrics {
        grid-template-columns: 1fr;
    }

    .pace-forecast-grid {
        grid-template-columns: 1fr;
    }

    .pace-summary-value {
        font-size: 1.6rem;
    }

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