.form-card, .result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: clamp(1rem, 4vw, 1.6rem);
}
.tool-layout { display: grid; gap: .8rem; grid-template-columns: minmax(0, 1fr); margin-top: .75rem; }
.tool-layout > *, .form-card, .result-card { max-width: 100%; min-width: 0; }
.field-grid { display: grid; column-gap: 1rem; grid-template-columns: 1fr; row-gap: .6rem; }
.field { min-width: 0; }
.field label { display: inline-block; font-size: .86rem; font-weight: 750; margin-bottom: .25rem; }
.field__hint { color: var(--text-secondary); display: block; font-size: .76rem; margin-top: .3rem; }
.field__error { color: var(--danger); display: block; font-size: .78rem; font-weight: 650; min-height: 0; }
.field__error:not(:empty) { margin-top: .22rem; min-height: 1.1em; }
input, select, textarea {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  min-height: 34px;
  padding: .34rem .68rem;
  width: 100%;
}
textarea { min-height: 96px; resize: vertical; }
@media (max-width: 599px) {
  input, select, textarea { min-height: 44px; padding: .52rem .68rem; }
  textarea { min-height: 88px; }
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 15%, transparent); outline: 0; }
[aria-invalid="true"] { border-color: var(--danger); }
.form-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .85rem; }
.form-actions .button { flex: 1 1 130px; }
.tool-header { margin-bottom: 1.25rem; }
.tool-header__back { color: var(--text-secondary); display: inline-flex; font-size: .85rem; margin-bottom: .65rem; text-decoration: none; }
.tool-header h1 { color: var(--navy-dark); font-size: clamp(1.7rem, 5vw, 2.45rem); letter-spacing: -.03em; line-height: 1.1; margin: 0; }
.tool-header p { color: var(--text-secondary); margin: .6rem 0 0; }