:root {
  font-family: system-ui, -apple-system, "Segoe UI", "Noto Sans TC", sans-serif;
  color: var(--ink);
  background: var(--page);
  font-synthesis: none;
  line-height: 1.55;
  -webkit-tap-highlight-color: transparent;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input {
  font: inherit;
}
button,
a,
input,
summary {
  touch-action: manipulation;
}
button {
  cursor: pointer;
}
button:disabled {
  cursor: default;
  opacity: 0.4;
}
button:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
main {
  max-width: 560px;
  margin: auto;
  padding: 22px 20px 35px;
}
header,
.section-head,
.calendar-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.prototype {
  font-size: 0.9375rem;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 3px 9px;
  color: var(--muted);
}
.intro {
  padding: 30px 0 23px;
}
.eyebrow {
  font-size: 0.875rem;
  letter-spacing: 2px;
  color: var(--muted);
  margin: 0 0 8px;
}
h1 {
  font-size: 2.125rem;
  margin: 0;
  letter-spacing: 1px;
}
#create-page > h1 {
  font-size: 1.5rem;
}
h2 {
  font-size: 1.25rem;
  margin: 0;
}
h3 {
  font-size: 1.0625rem;
  margin: 0;
}
p {
  margin: 8px 0;
}
#trip-line {
  color: var(--ink-2);
  font-size: 1.0625rem;
}
.settings {
  margin-top: 10px;
  font-size: 1rem;
}
.settings summary {
  color: var(--link);
  cursor: pointer;
  padding: 8px 0;
  width: fit-content;
}
.settings form {
  padding: 16px;
  background: var(--surface);
  border-radius: 12px;
}
.fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.section-head {
  margin-bottom: 14px;
}
.section-head > span {
  font-size: 0.9375rem;
  color: var(--ink-2);
}
.results {
  padding-bottom: 26px;
}
.window {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.window:first-child {
  padding: 19px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
}
.window-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}
.window strong {
  font-size: 1.375rem;
  letter-spacing: 0.2px;
}
.badge {
  font-size: 0.9375rem;
  color: var(--ink);
  white-space: nowrap;
}
.names {
  font-size: 1rem;
  color: var(--ink-2);
}
.unknown {
  font-size: 0.9375rem;
  color: var(--ink-2);
}
.more {
  margin-top: 12px;
  font-size: 1rem;
}
.more summary {
  padding: 9px 0;
  color: var(--link);
  cursor: pointer;
}
.empty {
  padding: 20px;
  background: var(--surface);
  border-radius: 14px;
  color: var(--ink-2);
}
.mine {
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
label {
  display: block;
  font-size: 1rem;
  color: var(--ink-2);
}
input:not([type="radio"]) {
  width: 100%;
  min-width: 0;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  margin: 6px 0 14px;
  font-size: 1.0625rem;
}
input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
fieldset {
  border: 0;
  margin: 5px 0 18px;
  padding: 0;
  min-width: 0;
}
legend {
  font-size: 1rem;
  color: var(--ink-2);
  margin-bottom: 10px;
}
.choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9px;
}
.choice {
  display: flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 13px 9px;
  cursor: pointer;
}
.choice:has(input:checked) {
  background: var(--page);
  border-color: var(--link);
}
.choice input {
  accent-color: var(--link);
  margin: 0;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}
.choice strong {
  display: block;
  font-size: 1rem;
}
.choice small {
  display: block;
  font-size: 0.875rem;
  color: var(--ink-2);
  margin-top: 3px;
}
.primary,
.secondary {
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-ink);
  width: 100%;
  padding: 14px;
  font-weight: 650;
  min-height: 50px;
}
.secondary {
  padding: 10px;
  min-height: 44px;
}
.text-button {
  border: 0;
  background: none;
  color: var(--link);
  font-size: 1rem;
  min-height: 44px;
  padding: 8px;
}
.calendar-head {
  margin-top: 20px;
}
.help {
  font-size: 1rem;
  color: var(--ink-2);
  margin: 4px 0 13px;
}
.weekdays,
.calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 4px;
}
.weekdays {
  text-align: center;
  font-size: 0.875rem;
  color: var(--ink-2);
  margin-bottom: 7px;
}
.day {
  position: relative;
  border: 1px solid transparent;
  border-radius: 9px;
  min-height: 52px;
  background: var(--surface);
  color: var(--muted);
  padding: 5px 0;
  font-size: 1.0625rem;
}
.day.ok {
  border-color: var(--line);
  font-weight: 650;
  background: var(--surface);
  color: var(--ink);
}
.day.no {
  background: var(--badge-bg);
  color: var(--badge-ink);
  text-decoration: line-through;
  text-decoration-thickness: 2px;
}
.day.anchor {
  outline: 3px solid var(--accent);
  outline-offset: 1px;
  color: var(--accent-ink);
  background: var(--accent);
  text-decoration: none;
}
.selection {
  font-size: 0.9375rem;
  color: var(--ink-2);
  min-height: 39px;
  margin: 11px 0 2px;
}
.draft-summary {
  font-size: 0.9375rem;
  color: var(--ink-2);
  margin: 0 0 14px;
}
.error {
  font-size: 1rem;
  color: var(--badge-ink);
}
.cancel {
  display: block;
  margin: 6px auto 0;
}
#my-summary {
  color: var(--ink-2);
  font-size: 1rem;
  margin-bottom: 18px;
}
.members {
  margin: 22px 0;
}
.members summary {
  cursor: pointer;
  font-size: 1rem;
  color: var(--link);
  padding: 8px 0;
}
.member {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 1rem;
}
.member span {
  display: block;
  color: var(--ink-2);
  font-size: 0.9375rem;
}
footer {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.9;
  margin-top: 30px;
}
[hidden] {
  display: none;
}
@media (max-width: 370px) {
  main {
    padding: 16px 12px;
  }
  .mine {
    padding: 16px;
  }
  .choice {
    padding: 10px 6px;
    gap: 5px;
  }
  .choices {
    grid-template-columns: 1fr;
  }
}