.land-calculator-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 25px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.land-calculator-container h2 {
    margin-top: 0;
    color: #2c3e50;
    font-size: 24px;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 15px;
}

.land-calculator-container h2 i {
    color: #28a745;
    margin-right: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #495057;
}

.form-group label i {
    margin-right: 6px;
    color: #6c757d;
    width: 20px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ced4da;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #28a745;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .half {
    flex: 1;
}

button#land-calculator-submit {
    width: 100%;
    padding: 14px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 10px;
}

button#land-calculator-submit i {
    margin-right: 8px;
}

button#land-calculator-submit:hover {
    background: #218838;
}

#land-calculator-result {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #28a745;
}

#land-calculator-result h3 {
    margin: 0 0 10px 0;
    color: #28a745;
    font-size: 20px;
}

#land-calculator-result h4 {
    margin: 20px 0 10px 0;
    color: #343a40;
    font-size: 18px;
}

#converted-value-display {
    font-size: 24px;
    font-weight: bold;
    color: #28a745;
    background: white;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid #dee2e6;
}

.equivalents-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.equivalents-list li {
    padding: 10px 15px;
    background: white;
    margin-bottom: 5px;
    border-radius: 6px;
    border: 1px solid #dee2e6;
    display: flex;
    align-items: center;
}

.equivalents-list li i {
    width: 30px;
    color: #6c757d;
    margin-right: 10px;
}

.equivalents-list li span {
    font-weight: bold;
    color: #212529;
    margin-left: auto;
}

#land-calculator-loading {
    text-align: center;
    padding: 20px;
    font-size: 18px;
    color: #6c757d;
}

#land-calculator-error {
    margin-top: 20px;
    padding: 15px;
    background: #f8d7da;
    border-radius: 6px;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

/* Mobile responsiveness */
@media (max-width: 480px) {
    .land-calculator-container {
        padding: 15px;
    }
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    .equivalents-list li {
        flex-wrap: wrap;
    }
    .equivalents-list li span {
        margin-left: 0;
        width: 100%;
        margin-top: 5px;
    }
}