/* ============================================================
   TOOLS — calculator cards, inputs, results
   ============================================================ */

.page-heading p{
  max-width: 60ch;
  color: var(--muted);
}

.tool-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
  margin-top: 2.5rem;
  align-items: start;
}
.tool-card{
  border: 1px solid var(--panel-line);
  border-radius: 8px;
  background: var(--panel);
  padding: 1.5rem 1.5rem 1.75rem;
}
.tool-card h2{
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 1.25rem;
}

.field{ margin-bottom: 1.1rem; }
.field label{
  display: block;
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
.field__row{
  display: flex;
  gap: 0.6rem;
  align-items: center;
}
.field input,
.field select{
  flex: 1;
  min-width: 0;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  padding: 0.6rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
.field select{ flex: 0 0 auto; }
.field input:focus,
.field select:focus{
  outline: 2px solid var(--accent-2);
  outline-offset: 1px;
  border-color: transparent;
}
.unit{
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-2);
  min-width: 3.2rem;
}

.results{
  margin: 1.5rem 0 0;
  border-top: 1px dashed var(--panel-line);
}
.results div{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--panel-line);
}
.results dt{
  font-size: 0.9rem;
  color: var(--muted);
}
.results dd{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1rem;
  white-space: nowrap;
}
.results dd.hl{
  color: var(--accent);
  font-weight: 500;
  font-size: 1.1rem;
}

.note{
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 1.25rem;
}

.formulas{
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--panel-line);
}
.formulas h2{
  font-family: var(--font-mono);
  font-size: 1rem;
  letter-spacing: 0.08em;
  color: var(--accent-2);
}
.formula{
  font-family: var(--font-mono);
  font-size: 0.95rem;
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: 6px;
  padding: 0.7rem 1rem;
  overflow-x: auto;
}
.formulas ul{
  color: var(--paper);
  font-size: 0.96rem;
  padding-left: 1.2rem;
}
.formulas li{ margin-bottom: 0.4rem; }

@media (max-width: 800px){
  .tool-grid{ grid-template-columns: 1fr; }
}