.hc-calculator#hc-caffeine-effect {
    background: #fff;
    border: 1px solid #4e342e;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.hc-ce-chart {
    height: 12px;
    background: #efebe9;
    border-radius: 6px;
    margin: 20px 0;
    overflow: hidden;
    border: 1px solid #d7ccc8;
}

.hc-ce-bar {
    height: 100%;
    background: linear-gradient(90deg, #8d6e63, #4e342e);
    width: 0;
    transition: width 0.8s ease-out;
}

.hc-result-value {
    color: #3e2723;
    font-size: 2em;
}

.hc-result-note {
    font-size: 0.9em;
    color: #5d4037;
    margin-top: 15px;
    background: #fdf5e6;
    padding: 10px;
    border-radius: 6px;
    border-left: 4px solid #6d4c41;
}