.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}
.calculator-input-card, .calculator-results-card {
    padding: 2.5rem;
    border-radius: 20px;
    animation: fadeInUp 0.8s ease-out forwards;
}
.calculator-input-card h3, .calculator-results-card h3 {
    margin-bottom: 2rem;
    font-size: 1.5rem;
    color: var(--text-color);
}
.input-group {
    margin-bottom: 2rem;
}
.input-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
}
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    margin-bottom: 1rem;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(78, 205, 196, 0.5);
    transition: 0.2s;
}
.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}
.slider-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}
.result-block {
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.result-block.highlight {
    background: linear-gradient(135deg, rgba(78, 205, 196, 0.1), rgba(162, 107, 252, 0.1));
    border-color: rgba(78, 205, 196, 0.3);
}
.result-label {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
}
.result-value.savings {
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(78, 205, 196, 0.4);
}
.result-value.time {
    color: #a26bfc;
    text-shadow: 0 0 20px rgba(162, 107, 252, 0.4);
}
.result-subtext {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-top: 0.5rem;
}
@media (max-width: 768px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
}