:root {
    --primary: #2e3fb1;
    --primary-dark: #2530b4;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
}

.calc-tool-container {
    max-width: 600px;
    margin: 0 auto;
}

.calc-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.calc-form .form-group {
    margin-bottom: 16px;
}

.calc-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-main);
}

.calc-form input,
.calc-form select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.calc-form input:focus {
    outline: none;
    border-color: var(--primary);
}

.calc-result {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 1px solid #bae6fd;
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.calc-result .result-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.calc-result .result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.calc-info {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.calc-form-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.calc-rows {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.calc-row {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
}

.calc-row-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.calc-row-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.calc-row-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.calc-row-remove:hover {
    color: #dc2626;
}

.calc-row-fields {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 12px;
    align-items: end;
}

@media (max-width: 480px) {
    .calc-row-fields {
        grid-template-columns: 1fr;
    }
}

.calc-row-result {
    margin: 0;
}

.calc-row-result .row-value {
    display: block;
    font-weight: 700;
    color: var(--primary);
    padding: 10px 0;
}