/* Pool Salt Calculator Styles */

.salt-calculator * {
    box-sizing: border-box;
}

.salt-calculator {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

.salt-calculator h1 {
    color: #333;
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 28px;
}

.salt-calculator .subtitle {
    color: #666;
    font-size: 14px;
    margin-bottom: 30px;
}

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

.salt-calculator .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    font-size: 14px;
}

.salt-calculator .form-group input,
.salt-calculator .form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
}

.salt-calculator .form-group input:focus,
.salt-calculator .form-group select:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.salt-calculator .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.salt-calculator .button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 30px;
}

.salt-calculator button {
    padding: 12px 20px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.salt-calculator .btn-calculate {
    background-color: #4CAF50;
    color: white;
    grid-column: 1 / -1;
}

.salt-calculator .btn-calculate:hover {
    background-color: #45a049;
}

.salt-calculator .btn-calculate:active {
    transform: scale(0.98);
}

.salt-calculator .btn-reset {
    background-color: #f0f0f0;
    color: #333;
    border: 1px solid #ddd;
}

.salt-calculator .btn-reset:hover {
    background-color: #e0e0e0;
}

.salt-calculator .results {
    margin-top: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 4px;
    border-left: 4px solid #4CAF50;
    display: none;
}

.salt-calculator .results.show {
    display: block;
}

.salt-calculator .result-item {
    margin-bottom: 15px;
}

.salt-calculator .result-item:last-child {
    margin-bottom: 0;
}

.salt-calculator .result-label {
    font-size: 13px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 5px;
}

.salt-calculator .result-value {
    font-size: 24px;
    font-weight: 700;
    color: #4CAF50;
}

.salt-calculator .result-unit {
    font-size: 14px;
    color: #999;
    margin-left: 5px;
}

.salt-calculator .error-message {
    color: #d32f2f;
    background: #ffebee;
    padding: 12px;
    border-radius: 4px;
    margin-top: 15px;
    border-left: 4px solid #d32f2f;
    display: none;
}

.salt-calculator .error-message.show {
    display: block;
}

.salt-calculator .info-box {
    background: #e3f2fd;
    border-left: 4px solid #2196F3;
    padding: 15px;
    margin-bottom: 25px;
    border-radius: 4px;
    font-size: 14px;
    color: #1565c0;
}

.salt-calculator .calculator-type {
    display: none;
}

.salt-calculator .calculator-type.active {
    display: block;
}

.salt-calculator .tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 25px;
}

.salt-calculator .tab-button {
    padding: 12px;
    border: 2px solid #ddd;
    background: white;
    color: #666;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

.salt-calculator .tab-button.active {
    border-color: #4CAF50;
    background: #4CAF50;
    color: white;
}

@media (max-width: 500px) {
    .salt-calculator {
        padding: 20px;
    }

    .salt-calculator .form-row {
        grid-template-columns: 1fr;
    }

    .salt-calculator .button-group {
        grid-template-columns: 1fr;
    }
}