/* Scoped to the birth-date exercise; existing site styles stay in control. */
.kc10 {
  margin: 2rem 0;
  padding: clamp(1rem, 3vw, 1.75rem);
  border: 1px solid rgba(213, 182, 100, .36);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(24, 26, 46, .92), rgba(11, 11, 22, .96));
  color: #f3efe6;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  scroll-margin-top: 5rem;
}
.kc10 *, .kc10 *::before, .kc10 *::after { box-sizing: border-box; }
.kc10 [hidden] { display: none !important; }
.kc10 h2 { margin: 0 0 .7rem; color: #f4dfaa; overflow-wrap: anywhere; }
.kc10 .kc10-method, .kc10 .kc10-privacy, .kc10 .kc10-note {
  margin: 0 0 1rem;
  color: #c9c7d7;
  font: inherit;
  font-size: .92rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}
.kc10 .kc10-fields, .kc10 .kc10-numbers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.kc10 .kc10-form, .kc10 .kc10-field, .kc10 .kc10-number-card { min-width: 0; }
.kc10 .kc10-label {
  display: block;
  margin-bottom: .45rem;
  font: inherit;
  font-size: .93rem;
  font-weight: 600;
  line-height: 1.5;
  color: #f3efe6;
}
.kc10 .kc10-date {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  min-height: 48px;
  margin: 0;
  padding: .7rem .8rem;
  border: 1px solid #787387;
  border-radius: 10px;
  background: #10111e;
  color: #fff9e9;
  color-scheme: dark;
  font: inherit;
  font-size: 1rem;
  line-height: 1.5;
}
.kc10 .kc10-date[aria-invalid="true"] { border-color: #f4b4ae; }
.kc10 .kc10-actions { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1rem 0 .85rem; }
.kc10 .kc10-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  max-width: 100%;
  min-height: 44px;
  height: auto;
  margin: 0;
  padding: .7rem 1.1rem;
  border: 1px solid rgba(222, 193, 121, .55);
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: .9rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: center;
  text-transform: none;
  white-space: normal;
  overflow-wrap: anywhere;
  letter-spacing: normal;
  box-shadow: none;
}
.kc10 .kc10-primary { background: linear-gradient(110deg, #f2d995, #c6a64c); color: #211b0c; }
.kc10 .kc10-secondary { background: rgba(255, 255, 255, .025); color: #f0d994; }
.kc10 .kc10-button:hover { filter: brightness(1.08); }
.kc10 .kc10-button:focus-visible, .kc10 .kc10-date:focus-visible,
.kc10 .kc10-result:focus-visible { outline: 3px solid #f5dfa2; outline-offset: 3px; }
.kc10 .kc10-error {
  margin: .4rem 0 0;
  color: #ffc7c1;
  font: inherit;
  font-size: .87rem;
  line-height: 1.5;
}
.kc10 .kc10-privacy { font-size: .82rem; margin-bottom: 0; }
.kc10 .kc10-status { color: #d6d3e1; font: inherit; font-size: .88rem; line-height: 1.6; margin: .65rem 0 0; }
.kc10 .kc10-status:empty { display: none; }
.kc10 .kc10-result { min-width: 0; margin-top: 1.5rem; border-radius: 10px; }
.kc10 .kc10-result-heading {
  margin: 0 0 1rem;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  line-height: 1.25;
  color: #f4dfaa;
}
.kc10 .kc10-number-card { padding: .9rem; background: rgba(255, 255, 255, .035); border: 1px solid rgba(255, 255, 255, .11); border-radius: 10px; }
.kc10 .kc10-person, .kc10 .kc10-pair-heading {
  margin: 0 0 .6rem;
  font: inherit;
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.5;
  color: #f4dfaa;
  overflow-wrap: anywhere;
}
.kc10 .kc10-arithmetic { margin: .5rem 0; color: #e5e2ec; font: inherit; font-size: .9rem; line-height: 1.8; overflow-wrap: anywhere; }
.kc10 .kc10-person-value { margin: .6rem 0 0; font: inherit; font-size: .92rem; font-weight: 700; color: #f2dda6; }
.kc10 .kc10-pair { margin: 1rem 0; padding: 1rem; border-left: 3px solid #ceae62; background: rgba(207, 174, 92, .045); border-radius: 0 10px 10px 0; }
.kc10 .kc10-prompt-label { margin: 1rem 0 .4rem; color: #f4dfaa; font: inherit; font-size: .93rem; font-weight: 700; line-height: 1.5; }
.kc10 .kc10-prompt { margin: 0; color: #e2deea; font: inherit; font-size: .96rem; line-height: 1.75; overflow-wrap: anywhere; }
.kc10 .kc10-note { margin-bottom: 0; font-size: .85rem; }
@media (max-width: 560px) {
  .kc10 .kc10-fields, .kc10 .kc10-numbers { grid-template-columns: minmax(0, 1fr); }
  .kc10 .kc10-primary { flex: 1 0 100%; }
  .kc10 .kc10-secondary { flex: 1 1 40%; }
}