/* BMI Calculator Styles */
.bmi-calculator {
    max-width: 700px;
    margin: 2rem auto;
    border-radius: 12px;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e1e1;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.input-group input:focus {
    border-color: #4CAF50;
    outline: none;
}

.unit-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    gap: 1rem;
}

.unit-toggle button {
    padding: 0.5rem 2.5rem;
    border: 2px solid #4361ee;
    background: transparent;
    color: #4361ee;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.unit-toggle button.active {
    background: #4361ee;
    color: white;
}

.calculate-btn {
    width: 100%;
    padding: 1rem;
    background: #4361ee;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

.calculate-btn:hover {
    background: #33479e;
}

.result-section {
    margin-top: 2rem;
    text-align: center;
    display: none;
}

.result-section.visible {
    display: block;
}

.bmi-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #4CAF50;
    margin-bottom: 1rem;
}

.bmi-category {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
}

.bmi-scale {
    height: 20px;
    background: linear-gradient(to right, #ff9999, #99ff99, #ff9999);
    border-radius: 10px;
    margin: 1rem 0;
    position: relative;
}

.bmi-marker {
    width: 12px;
    height: 24px;
    background: #333;
    position: absolute;
    top: -2px;
    transform: translateX(-50%);
    border-radius: 3px;
    transition: left 0.3s ease;
}

.health-recommendation {
    margin-top: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 6px;
    color: #666;
}

.error-message {
    color: #dc3545;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: none;
}