.hc-calculator {
    padding: 24px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    max-width: 600px;
    margin: 20px auto;
    font-family: 'Inter', sans-serif;
    color: #333333;
}

.hc-cal-header {
    text-align: center;
    margin-bottom: 24px;
    border-bottom: 2px solid #f0f0f0;
    padding-bottom: 16px;
}

.hc-cal-header h3 {
    margin: 0 0 8px 0;
    font-size: 22px;
    color: #1a1a1a;
}

.hc-cal-header p {
    margin: 0;
    font-size: 14px;
    color: #666666;
    line-height: 1.5;
}

.hc-form-group {
    margin-bottom: 20px;
}

.hc-form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.hc-input, .hc-select {
    width: 100%;
    padding: 12px;
    border: 1px solid #cccccc;
    border-radius: 6px;
    font-size: 15px;
    background: #fafafa;
    box-sizing: border-box;
    transition: all 0.3s;
}

.hc-input:focus, .hc-select:focus {
    border-color: #0073aa;
    background: #ffffff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 115, 170, 0.15);
}

.hc-btn {
    width: 100%;
    padding: 14px;
    background: #0073aa;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.hc-btn:hover {
    background: #005177;
}

.hc-result {
    margin-top: 24px;
    padding: 20px;
    background: #f9f9f9;
    border-left: 4px solid #0073aa;
    border-radius: 4px;
    display: none;
}

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

.hc-result-title {
    font-weight: 700;
    margin-bottom: 16px;
    font-size: 16px;
    border-bottom: 1px solid #e0e0e0;
    padding-bottom: 8px;
}

.hc-result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 14px;
}

.hc-result-label {
    color: #555555;
}

.hc-result-value {
    font-weight: 700;
    color: #1a1a1a;
}

.hc-result-desc {
    margin-top: 16px;
    font-size: 13.5px;
    color: #555555;
    background: #fff;
    padding: 12px;
    border-radius: 6px;
    border: 1px dashed #ddd;
    line-height: 1.5;
}