.calculator-section {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.calculator-container {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.calculator-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: bold;
    color: var(--primary-color);
}

.form-group input,
.form-group select {
    padding: 0.8rem;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary-color);
    outline: none;
}

.calculate-btn {
    grid-column: 1 / -1;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.calculate-btn:hover {
    background: var(--secondary-color);
}

.results-container {
    margin-top: 3rem;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.result-card {
    text-align: center;
    padding: 1.5rem;
    background: var(--background-color);
    border-radius: 10px;
    transition: transform 0.3s;
}

.result-card:hover {
    transform: translateY(-5px);
}

.result-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.result-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.result-card p {
    font-size: 1.5rem;
    font-weight: bold;
}

.category {
    display: inline-block;
    padding: 0.3rem 1rem;
    border-radius: 15px;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.meal-plan {
    margin-top: 3rem;
}

.meal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.meal-card {
    background: var(--background-color);
    padding: 1.5rem;
    border-radius: 10px;
}

.meal-card h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
}

.meal-card ul {
    list-style: none;
    padding: 0;
}

.meal-card li {
    margin: 0.5rem 0;
    padding-right: 1.5rem;
    position: relative;
}

.meal-card li::before {
    content: "•";
    color: var(--accent-color);
    position: absolute;
    right: 0;
}

.meal-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.tab-btn {
    background: var(--background-color);
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
}

.meal-plan-content {
    display: none;
}

.meal-plan-content.active {
    display: block;
}

.activity-plan {
    margin-top: 3rem;
}

.activity-schedule {
    overflow-x: auto;
    margin-top: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.activity-schedule table {
    width: 100%;
    border-collapse: collapse;
}

.activity-schedule th,
.activity-schedule td {
    padding: 1rem;
    text-align: right;
    border-bottom: 1px solid #eee;
}

.activity-schedule th {
    background: var(--primary-color);
    color: white;
}

.activity-schedule tr:hover {
    background-color: var(--background-color);
}

.duration-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

.total-calories {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    color: var(--primary-color);
    font-weight: bold;
    text-align: center;
}