.hc-calculator#hc-caffeine {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 15px;
    padding: 30px;
}

.hc-caffeine-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.hc-progress-container {
    height: 10px;
    background: #eee;
    border-radius: 5px;
    margin: 15px 0;
    overflow: hidden;
}

.hc-progress-bar {
    height: 100%;
    width: 0;
    transition: width 0.5s ease;
}

.hc-caf-status {
    font-weight: bold;
    text-align: center;
    margin-top: 10px;
}

.hc-result-note {
    font-size: 0.8em;
    color: #95a5a6;
    text-align: center;
    margin-top: 15px;
}