.mad-calc {
  --mad-ink: #191713;
  --mad-muted: #6c665d;
  --mad-paper: #fffdf8;
  --mad-line: #ded8ce;
  --mad-accent: #e0653d;
  --mad-accent-dark: #a93d20;
  --mad-wash: #f4eee4;
  box-sizing: border-box;
  width: 100%;
  max-width: 980px;
  margin: 2rem auto;
  padding: clamp(1rem, 3vw, 2.25rem);
  color: var(--mad-ink);
  background: var(--mad-paper);
  border: 1px solid var(--mad-line);
  border-radius: 18px;
  box-shadow: 0 16px 45px rgba(42, 32, 20, 0.08);
  font-family: inherit;
  line-height: 1.45;
}

.mad-calc *, .mad-calc *::before, .mad-calc *::after { box-sizing: border-box; }
.mad-calc__header { margin-bottom: 2rem; }
.mad-calc__header h2 { margin: 0; font-size: clamp(2rem, 6vw, 3.75rem); line-height: 1; letter-spacing: -0.04em; }
.mad-calc__header > p:last-child { max-width: 620px; margin: .75rem 0 0; color: var(--mad-muted); }
.mad-calc__eyebrow { margin: 0 0 .5rem; color: var(--mad-accent-dark); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.mad-calc__section-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.mad-calc__section-heading h3 { margin: 0; font-size: 1.15rem; }
.mad-calc__button, .mad-calc button { font: inherit; }
.mad-calc__button--secondary { padding: .55rem .8rem; color: var(--mad-ink); background: transparent; border: 1px solid var(--mad-line); border-radius: 8px; cursor: pointer; font-weight: 700; }
.mad-calc__button--secondary:hover { border-color: var(--mad-accent); color: var(--mad-accent-dark); }
.mad-calc__add { margin-top: .8rem; }
.mad-calc__table-wrap { overflow-x: auto; }
.mad-calc__table { width: 100%; border-collapse: collapse; table-layout: fixed; }
.mad-calc__table th { padding: .55rem .35rem; color: var(--mad-muted); font-size: .72rem; text-align: left; text-transform: uppercase; letter-spacing: .05em; }
.mad-calc__table th:nth-child(1) { width: 26%; }
.mad-calc__table th:nth-child(2) { width: 12%; }
.mad-calc__table th:nth-child(3) { width: 10%; }
.mad-calc__table th:nth-child(4), .mad-calc__table th:nth-child(5) { width: 12%; }
.mad-calc__table th:nth-child(6) { width: 18%; }
.mad-calc__table th:last-child { width: 38px; }
.mad-calc__table td { padding: .3rem .35rem; border-top: 1px solid var(--mad-line); }
.mad-calc input, .mad-calc select { width: 100%; min-height: 42px; padding: .55rem .6rem; color: var(--mad-ink); background: #fff; border: 1px solid #cfc7bb; border-radius: 7px; font: inherit; font-size: 16px; }
.mad-calc input:focus, .mad-calc select:focus, .mad-calc button:focus-visible { outline: 3px solid rgba(224, 101, 61, .25); outline-offset: 1px; border-color: var(--mad-accent); }
.mad-calc__optional small { display: block; font-size: .65rem; font-weight: 500; text-transform: none; letter-spacing: 0; }
.mad-calc__remove { width: 30px; height: 30px; padding: 0; color: var(--mad-muted); background: transparent; border: 0; border-radius: 50%; cursor: pointer; font-size: 1.5rem; line-height: 1; }
.mad-calc__remove:hover { color: #9a2416; background: #fae8e3; }
.mad-calc__hint { margin: .5rem .35rem 0; color: var(--mad-muted); font-size: .8rem; }
.mad-calc__ice-note { font-style: italic; }
.mad-calc__dilution { margin-top: 2rem; padding: 1.15rem; background: var(--mad-wash); border-radius: 12px; }
.mad-calc__dilution-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; max-width: 650px; }
.mad-calc label > span:first-child { display: block; margin-bottom: .35rem; color: var(--mad-muted); font-size: .78rem; font-weight: 700; }
.mad-calc__joined { display: grid; grid-template-columns: 1fr 80px; }
.mad-calc__joined input { border-radius: 7px 0 0 7px; }
.mad-calc__joined select { border-left: 0; border-radius: 0 7px 7px 0; }
.mad-calc__suffix { position: relative; }
.mad-calc__suffix input { padding-right: 2.2rem; }
.mad-calc__suffix > span { position: absolute; top: 50%; right: .75rem; transform: translateY(-50%); color: var(--mad-muted); }
.mad-calc__presets { margin-top: .75rem; color: var(--mad-muted); font-size: .8rem; }
.mad-calc__presets button { margin-left: .35rem; padding: .25rem .55rem; color: var(--mad-accent-dark); background: #fff; border: 1px solid var(--mad-line); border-radius: 999px; cursor: pointer; }
.mad-calc__results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1.25rem; }
.mad-calc__result-card { padding: clamp(1rem, 3vw, 1.5rem); background: #26231f; color: #fff; border-radius: 14px; }
.mad-calc__result-card--accent { background: var(--mad-accent-dark); }
.mad-calc__result-card h3 { margin: 0 0 1rem; color: rgba(255,255,255,.72); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; }
.mad-calc__metrics { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.mad-calc__metrics strong { display: block; font-size: clamp(2rem, 6vw, 3.25rem); line-height: 1; letter-spacing: -.04em; }
.mad-calc__metrics span { color: rgba(255,255,255,.68); font-size: .75rem; font-weight: 700; text-transform: uppercase; }
.mad-calc__result-card dl { margin: 1.25rem 0 0; padding-top: .75rem; border-top: 1px solid rgba(255,255,255,.18); }
.mad-calc__result-card dl div { display: flex; justify-content: space-between; gap: 1rem; padding: .2rem 0; }
.mad-calc__result-card dt { color: rgba(255,255,255,.68); }
.mad-calc__result-card dd { margin: 0; text-align: right; }
.mad-calc__method { margin-top: 1rem; color: var(--mad-muted); font-size: .85rem; }
.mad-calc__method summary { color: var(--mad-ink); cursor: pointer; font-weight: 700; }
.mad-calc__method p { margin-bottom: 0; }

@media (max-width: 720px) {
  .mad-calc { border-radius: 12px; }
  .mad-calc__table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .mad-calc__table, .mad-calc__table tbody, .mad-calc__table tr, .mad-calc__table td { display: block; width: 100%; }
  .mad-calc__table tr { position: relative; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; margin-bottom: .85rem; padding: .8rem 2.6rem .8rem .8rem; background: #fff; border: 1px solid var(--mad-line); border-radius: 10px; }
  .mad-calc__table td { padding: 0; border: 0; }
  .mad-calc__table td:first-child { grid-column: 1 / -1; }
  .mad-calc__table td::before { content: attr(data-label); display: block; margin-bottom: .2rem; color: var(--mad-muted); font-size: .68rem; font-weight: 700; text-transform: uppercase; }
  .mad-calc__remove-cell { position: absolute; top: .45rem; right: .35rem; width: auto !important; }
  .mad-calc__remove-cell::before { display: none !important; }
  .mad-calc__dilution-grid, .mad-calc__results { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .mad-calc__section-heading { align-items: flex-start; }
  .mad-calc__table tr { grid-template-columns: 1fr 1fr; }
  .mad-calc__metrics strong { font-size: 2.35rem; }
}