.tdee-calculator-wrapper {
    max-width: 500px;
    margin: 20px 0;
    padding: 20px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background: #f9f9f9;
    font-family: inherit;
    box-sizing: border-box;
}

.tdee-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.tdee-input-group {
    display: flex;
    flex-direction: column;
}

.tdee-input-group.tdee-full-width {
    grid-column: span 2;
}

.tdee-input-group label {
    font-size: 0.9em;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.tdee-input-group input, 
.tdee-input-group select {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    width: 100%;
    box-sizing: border-box;
}

.tdee-flex-row {
    display: flex;
    gap: 10px;
}

.tdee-btn {
    width: 100%;
    margin-top: 20px;
    padding: 12px;
    background-color: #0954B9;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s;
}

.tdee-btn:hover {
    background-color: #555;
}

.tdee-result-box {
    margin-top: 20px;
    padding: 15px;
    background: #fff;
    border-left: 5px solid #2196F3; /* Blue accent for Energy */
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.tdee-result-row {
    display: flex;
    align-items: baseline;
    gap: 5px;
    flex-wrap: wrap;
}

.tdee-number {
    font-size: 2em;
    font-weight: bold;
    color: #333;
}

.tdee-unit {
    font-size: 0.9em;
    color: #777;
}

.tdee-sub-results {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #eee;
    font-size: 0.9em;
    color: #555;
}

/* Mobile Adjustments */
@media (max-width: 480px) {
    .tdee-grid {
        grid-template-columns: 1fr;
    }
    .tdee-input-group.tdee-full-width {
        grid-column: span 1;
    }
}