.days-apart {
  max-width: 760px;
  margin: 0 auto;
  color: var(--ink);
  line-height: 1.5;
}
.days-apart * {
  box-sizing: border-box;
}
.days-apart [hidden] {
  display: none !important;
}
.days-apart .da-intro {
  margin: 0 0 1.5rem;
  font-size: clamp(1.4rem, 3vw, 2rem);
}
.days-apart button,
.days-apart input,
.days-apart textarea {
  font: inherit;
  color: var(--ink);
}
.days-apart button,
.days-apart input[type="date"],
.days-apart textarea {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 0.55rem;
  padding: 0.65rem 0.8rem;
  min-height: 44px;
}
.days-apart button {
  cursor: pointer;
}
.days-apart button:hover:not(:disabled) {
  border-color: var(--ink);
}
.days-apart button:disabled {
  opacity: 0.5;
  cursor: default;
}
.days-apart :focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
.days-apart input[type="checkbox"] {
  accent-color: var(--ink);
  width: 1.15rem;
  height: 1.15rem;
  flex-shrink: 0;
}
.days-apart .da-dates {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 0.8rem;
}
.days-apart .da-dates label {
  display: grid;
  gap: 0.4rem;
  font-weight: 600;
  min-width: 0;
}
.days-apart input[type="date"] {
  width: 100%;
  min-width: 0;
  font-weight: 400;
}
.days-apart #da-swap {
  font-size: 1.4rem;
  padding: 0.4rem 0.75rem;
}
.days-apart .da-help,
.days-apart .da-footnote {
  font-size: 0.875rem;
  color: var(--muted);
}
.days-apart .da-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  cursor: pointer;
  margin-top: 1rem;
}
.days-apart #da-rule-help {
  margin: 0 0 1.2rem;
}
.days-apart .da-filter {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 0.2rem 0;
}
.days-apart summary {
  cursor: pointer;
  padding: 0.7rem 0;
  min-height: 44px;
}
.days-apart summary span {
  color: var(--muted);
  font-size: 0.875rem;
}
.days-apart fieldset {
  padding: 0.5rem 0 0;
  border: 0;
  min-width: 0;
  margin: 0;
}
.days-apart legend {
  font-size: 0.875rem;
}
.days-apart .da-presets,
.days-apart .da-weekdays,
.days-apart .da-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}
.days-apart .da-presets {
  margin: 0.3rem 0 0.6rem;
}
.days-apart .da-weekdays label {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 44px;
  padding: 0.25rem 0.3rem;
  cursor: pointer;
}
.days-apart .da-result {
  margin: 1.7rem 0 1.2rem;
  padding: 0.1rem 0 0.3rem 1.3rem;
  border-left: 4px solid var(--accent);
}
.days-apart .da-eyebrow {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
}
.days-apart .da-total {
  margin: 0.2rem 0 0.6rem;
  line-height: 1.05;
}
.days-apart #da-count {
  font-size: clamp(2.8rem, 8vw, 5.8rem);
  font-weight: 650;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.days-apart #da-unit {
  font-size: 1.4rem;
  white-space: nowrap;
}
.days-apart #da-explanation {
  margin: 0.6rem 0;
  overflow-wrap: anywhere;
}
.days-apart #da-detail {
  margin: 0.5rem 0;
}
.days-apart #da-copy {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.days-apart #da-error {
  border-left: 3px solid var(--ink);
  padding: 0.5rem 0.8rem;
}
.days-apart .da-footnote {
  border-top: 1px solid var(--line);
  margin-top: 1.5rem;
  padding-top: 1rem;
}
.days-apart #da-fallback {
  margin-top: 1rem;
}
.days-apart #da-copy-text {
  display: block;
  width: 100%;
  margin-top: 0.5rem;
  resize: vertical;
}
.days-apart dialog {
  max-width: min(480px, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 1.5rem;
  color: var(--ink);
  background: var(--bg);
}
.days-apart dialog::backdrop {
  background: rgb(0 0 0 / 0.45);
}
.days-apart dialog h2 {
  margin-top: 0;
  font-size: 1.3rem;
}
@media (max-width: 480px) {
  .days-apart .da-dates {
    grid-template-columns: minmax(0, 1fr) auto;
  }
  .days-apart .da-dates label:last-child {
    grid-column: 1;
    grid-row: 2;
  }
  .days-apart #da-swap {
    grid-column: 2;
    grid-row: 1 / 3;
    align-self: center;
  }
  .days-apart .da-result {
    padding-left: 0.8rem;
  }
  .days-apart .da-actions {
    align-items: stretch;
  }
}
@media (prefers-reduced-motion: reduce) {
  .days-apart *,
  .days-apart *::before,
  .days-apart *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}