:root {
  --blue: #1f97fc;
  --blue-strong: #0b6fc9;
  --orange: #f0a344;
  --ink: #0f1b2d;
  --mist: #eef5fc;
  --line: #c7daef;
  --muted: #3f5470;
  --faint: #7f93ab;
  --white: #fff;
  --radius: 12px;
  --radius-lg: 20px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: 'Instrument Sans', 'Noto Sans JP', sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

h1, h2, h3, p { margin: 0; }
button, input, textarea, select { font: inherit; color: inherit; }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }

.site-header {
  flex-wrap: wrap;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.logo-link { display: inline-flex; }
.host { color: var(--muted); font-size: 14px; text-align: right; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 24px 16px 64px; }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.tripo { display: block; height: 96px; width: auto; }

.meta { color: var(--muted); font-size: 14px; }

.booking { display: grid; gap: 16px; grid-template-columns: 1fr; align-items: start; }
.side h1 { font-size: 22px; margin: 12px 0 8px; }
.side .tripo { margin-bottom: 4px; }
.side dl { margin: 16px 0 0; display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; font-size: 14px; }
.side dt { color: var(--faint); }
.side dd { margin: 0; color: var(--muted); }
.side .desc { color: var(--muted); font-size: 14px; margin-top: 12px; white-space: pre-line; }

.main-col { display: grid; gap: 16px; }
.main-col .card { padding: 20px; }

.step-title { font-size: 16px; font-weight: 700; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.step-no {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--blue-strong);
  color: var(--white);
  font-size: 13px;
}

.chip {
  display: inline-block;
  background: var(--white);
  border: 1px solid var(--blue-strong);
  color: var(--blue-strong);
  border-radius: 999px;
  padding: 4px 14px;
  font-size: 14px;
  font-weight: 500;
}
.chip-bar { display: flex; justify-content: flex-end; }

.tz-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--muted); margin-bottom: 12px; }
.tz-row select { border: 1px solid var(--line); border-radius: 8px; padding: 4px 8px; background: var(--white); }

.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cal-head h3 { font-size: 16px; }
.nav-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  color: var(--blue-strong);
  cursor: pointer;
  font-size: 18px;
}
.nav-btn:disabled { color: var(--faint); cursor: default; opacity: 0.5; }

.cal-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 4px; max-width: 440px; margin: 0 auto; }
.cal-head { max-width: 440px; margin: 0 auto 8px; }
.cal-dow { text-align: center; font-size: 12px; color: var(--muted); padding: 4px 0; }
.day {
  position: relative;
  aspect-ratio: 1;
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--faint);
  cursor: default;
  font-size: 15px;
}
.day.has-slots { color: var(--blue-strong); font-weight: 600; cursor: pointer; background: var(--mist); }
.day.has-slots::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 5px;
  width: 4px;
  height: 4px;
  margin-left: -2px;
  border-radius: 50%;
  background: var(--blue);
}
.day.today span { text-decoration: underline; text-underline-offset: 3px; }
.day.selected { background: var(--blue-strong); color: var(--white); }
.day.selected::after { background: var(--white); }
.day.empty-pick { border-color: var(--line); color: var(--ink); cursor: pointer; }
.day.blank { visibility: hidden; }

.loading { color: var(--muted); font-size: 14px; padding: 8px 0; }

.times { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(96px, 1fr)); }
.time-btn {
  border: 1px solid var(--blue-strong);
  background: var(--white);
  color: var(--blue-strong);
  border-radius: var(--radius);
  padding: 10px;
  font-weight: 600;
  cursor: pointer;
}
.time-btn.selected { background: var(--blue-strong); color: var(--white); }

.no-slots { display: flex; align-items: center; gap: 12px; color: var(--muted); }

form { display: grid; gap: 14px; }
label { display: grid; gap: 4px; font-size: 14px; font-weight: 500; }
label .req { color: var(--blue-strong); }
.form-note { color: var(--faint); font-size: 13px; }
.fatal h1 { font-size: 20px; }
input[type=text], input[type=email], input[type=number], select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--white);
}
textarea { min-height: 88px; resize: vertical; }
input.required { border-color: #7dc3fd; background: #edf7ff; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.confirm {
  border: 1px solid var(--orange);
  background: var(--orange);
  color: var(--ink);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-weight: 700;
  cursor: pointer;
}
.confirm:disabled { opacity: 0.6; cursor: default; }
.error-msg { color: #a12a2a; font-size: 14px; }

.done { text-align: center; display: grid; justify-items: center; gap: 12px; padding: 40px 24px; }
.done h1 { font-size: 22px; }
.done .when { font-size: 18px; font-weight: 600; color: var(--blue-strong); }
.done .links { display: grid; gap: 8px; justify-items: center; }
.done a { color: var(--blue-strong); font-weight: 500; }

.fatal { display: flex; align-items: center; gap: 16px; }

@media (min-width: 640px) {
}

@media (min-width: 900px) {
  .booking { grid-template-columns: 320px 1fr; gap: 24px; }
  .side { position: sticky; top: 16px; }
}

@media (max-width: 480px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 6px; }
  .host { text-align: left; }
}

.booking > *, .main-col > * { min-width: 0; }
.host { min-width: 0; }