.astel-calculator {
    max-width: 500px;
    margin: 0 auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    font-family: 'Work Sans', sans-serif;
}

.astel-heading {
    color: #0A5C36;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
    letter-spacing: -0.5px;
}

.astel-input-group {
    margin-bottom: 20px;
}

.astel-label {
    display: block;
    margin-bottom: 8px;
    color: #4A5568;
    font-size: 14px;
    font-weight: 500;
}

.astel-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    background-color: #F8FAFC;
    color: #1A202C;
    font-size: 15px;
    transition: all 0.2s;
}

.astel-select:focus {
    outline: none;
    border-color: #38A169;
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.1);
}

.astel-button {
    width: 100%;
    padding: 14px;
    background-color: #38A169;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    margin-top: 10px;
    margin-bottom: 25px;
}

.astel-button:hover {
    background-color: #2F855A;
}

.astel-results {
    padding: 20px;
    background-color: #F0FFF4;
    border-radius: 8px;
    border-left: 4px solid #38A169;
}

.astel-result-text {
    color: #2D3748;
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 20px;
}

.astel-highlight {
    font-weight: 600;
    color: #0A5C36;
}

.astel-savings {
    font-weight: 700;
    color: #38A169;
    font-size: 18px;
}

.astel-hours-container {
    margin: 25px 0;
}

.astel-hours-heading {
    color: #0A5C36;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 18px;
    margin-top: 0;
    margin-bottom: 15px;
    font-weight: 600;
}

.astel-hours-list {
    display: grid;
    gap: 10px;
}

.period-result {
    padding: 12px;
    background-color: white;
    border-radius: 6px;
    border-left: 3px solid #38A169;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.period-result strong {
    color: #2D3748;
    font-weight: 600;
}

.astel-note {
    font-size: 13px;
    color: #718096;
    font-style: italic;
    margin-top: 20px;
    margin-bottom: 0;
}

.loading, .error {
    padding: 10px;
    border-radius: 4px;
    text-align: center;
}

.loading {
    background-color: #EBF8FF;
    color: #3182CE;
}

.error {
    background-color: #FFF5F5;
    color: #E53E3E;
}

@media (max-width: 480px) {
    .astel-calculator {
        padding: 20px;
    }
    
    .astel-heading {
        font-size: 20px;
    }
}