:root {
        --pc-primary-color: #04a8bb;
        --pc-color-f9f9f966: #f9f9f966;
        --pc-white: #fff;
        --pc-color-181818: #181818;
        --pc-color-ddd: #ddd;
        --pc-color-F9F9F9: #f9f9f9;
        --pc-color-333: #333;
        --pc-color-e1fbff: #e1fbff;
        --pc-color-f7feff: #f7feff;
        --pc-color-1f2937: #1f2937;
        --pc-color-ff3b3b: #ff3b3b; 
        --pc-color-000000: #000000;
    }
.peptide-calculator {
    max-width: 720px;
    margin: 0px auto;
    padding: 25px;
    border-radius: 14px;
    background: var(--pc-white);
    border: 1px solid var(--pc-primary-color);
}
.peptide-calculator h3 {
    color: var(--pc-primary-color);
    margin-block: 7px;
    font-weight: 600;
    letter-spacing: 1px;
}

.peptide-calculator h4 {
    margin-block-end: 7px;
    font-size: 16px;
    letter-spacing: 0.1px;
    font-weight: 200;
}

.calc-group {
    margin-bottom: 22px;
    background-color: var(--pc-color-F9F9F9);
    border: 1px solid var(--pc-color-ddd);
    border-radius: 10px;
    padding: 10px;
}
.cal-item{display:flex;gap:10px;align-items:center;}
.cal-item select, .cal-item input {
    width: 100%;
    border-radius: 8px;
    border: 1px solid var(--pc-color-ddd);
    background: var(--pc-white);
    color: var(--pc-color-181818);
    height: 40px;
    padding-inline: 10px;
    font-size: 14px;
}

.cal-input-custom{display:none;gap:6px;align-items:center;}
.cal-input-custom span{opacity:.7}

.cal-unit{display:flex;justify-content:space-between;margin-bottom:12px}
.unit-toggle span{
  cursor:pointer;
  padding:6px 12px;
  border:1px solid var(--pc-color-333);
  border-radius:6px;
}
.unit-toggle span.active{
  background:var(--pc-primary-color);
  color:var(--pc-color-000000);
  border-color:var(--pc-primary-color);
}

.calc-results{
  margin-top:20px;
  padding:15px;
  background: var(--pc-color-e1fbff);
  border:1px solid var(--pc-primary-color);
  border-radius:10px;
}

.calc-results span{
  color: var(--pc-primary-color);
  font-weight:700;
}

/* Results */
.calc-output {
    margin-top: 40px;
    padding: 25px;
    border-radius: 14px;
    background: rgba(4, 168, 187, 0.16);
    border: 1px solid var(--pc-primary-color);
}

.cal-form-desc {
    margin-top: 25px;
    padding: 15px;
    background: var(--pc-color-f9f9f966);
    border: 1px solid var(--pc-color-ddd);
    border-radius: 10px;
    line-height: 1.7lh;
}

.cal-form-desc h3 {
    font-size: 24px;
}

.calc-output h2 {
    font-size: 28px;
    text-align: center;
    font-weight: 400;
    color: var(--pc-primary-color);
}

.result-unit {
    text-align: center;
    font-size: 38px;
    margin: 15px 0 25px;
    font-weight: 600 !important;
    letter-spacing: 1px !important;
    color: var(--pc-color-000000) !important;
}

.result-unit span{
    color: var(--pc-primary-color);
    font-weight:800;
}

.cal-form {
    position: relative;
    margin: 45px auto;
    border: 2px solid var(--pc-color-1f2937);
    border-radius: 10px;
    max-width: 90%;
    background-color: var(--pc-white);
    overflow: hidden;
}

.cal-form-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    position: relative;
    padding: 10px 0;
    background-color: #ff000000;
    z-index: 1;
}

.cal-form-item span {
    position: relative;
    font-size: 14px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    justify-content: center;
    align-items: center;
    width: 0;
}

.cal-form-item span::before {
    content: "";
    width: 3px;
    height: 30px;
    background-color: var(--pc-color-000000);
    border-radius: 2px;
}

.cal-form-item > span:nth-child(2n)::before {
    width: 2px;
    height: 18px;
}

.cal-form-line{
    position:absolute;
    height: 100%;
    border-radius: 20px;
    background: #f1aeb6;
    border-radius:3px;
    left:0;
    top:0;
    transition:0.35s cubic-bezier(.4,0,.2,1);
}

.cal-form-desc ol{
    padding-left:20px;
}

.cal-form-desc ol li {
    list-style: decimal !important;
}

.highlight{
    color: var(--pc-primary-color);
    font-weight:700;
}