.briefing-calendar-embed {
  --briefing-calendar-bg: #ffffff;
  --briefing-calendar-bg-subtle: #f3f4f6;
  --briefing-calendar-bg-line: #d1d5db;
  --briefing-calendar-bg-muted: #e5e7eb;
  --briefing-calendar-text: #1f2937;
  --briefing-calendar-text-muted: #6b7280;
  --briefing-calendar-text-faint: #cbd5e1;
  --briefing-calendar-link: #111827;
  --briefing-calendar-online-bg: #e0f2fe;
  --briefing-calendar-online-text: #0369a1;
  --briefing-calendar-fukuoka-bg: #f0fdf4;
  --briefing-calendar-fukuoka-text: #15803d;
  --briefing-calendar-tokyo-bg: #fef2f2;
  --briefing-calendar-tokyo-text: #b91c1c;
  --briefing-calendar-nagoya-bg: #fff7ed;
  --briefing-calendar-nagoya-text: #c2410c;
  display: grid;
  gap: 1.5rem;
  width: 100%;
  color: var(--briefing-calendar-text);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", sans-serif;
}

.briefing-calendar-embed[aria-busy="true"] {
  opacity: 0.72;
}

.briefing-calendar-embed__month-label,
.briefing-calendar-embed__empty,
.briefing-calendar-embed__status {
  margin: 0;
}

.briefing-calendar-embed__month {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100%, 28rem);
  margin: 0 auto;
}

.briefing-calendar-embed__month-copy {
  display: grid;
  justify-items: center;
  gap: 0.25rem;
  min-width: 0;
  text-align: center;
}

.briefing-calendar-embed__month-year {
  color: var(--briefing-calendar-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.briefing-calendar-embed__month-label {
  color: var(--briefing-calendar-text);
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 700;
  line-height: 1.2;
}

.briefing-calendar-embed__nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 9999px;
  background: var(--briefing-calendar-bg-subtle);
  color: var(--briefing-calendar-link);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}

.briefing-calendar-embed__nav:hover,
.briefing-calendar-embed__nav:focus-visible {
  background: var(--briefing-calendar-bg-muted);
}

.briefing-calendar-embed__table-wrap {
  overflow-x: auto;
}

.briefing-calendar-embed__table {
  width: 100%;
  min-width: 680px;
  border-collapse: separate;
  border-spacing: 1px;
  table-layout: fixed;
  background: var(--briefing-calendar-bg-line);
  border: 1px solid var(--briefing-calendar-bg-line);
}

.briefing-calendar-embed__weekday,
.briefing-calendar-embed__day {
  padding: 0.5rem;
  text-align: left;
  vertical-align: top;
}

.briefing-calendar-embed__weekday {
  background: var(--briefing-calendar-bg-subtle);
  color: var(--briefing-calendar-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
}

.briefing-calendar-embed__weekday--sun {
  color: #dc2626;
}

.briefing-calendar-embed__weekday--sat {
  color: #2563eb;
}

.briefing-calendar-embed__day {
  height: 7.5rem;
  background: var(--briefing-calendar-bg);
}

.briefing-calendar-embed__day--muted {
  color: var(--briefing-calendar-text-faint);
}

.briefing-calendar-embed__day-number {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
}

.briefing-calendar-embed__slot-list {
  display: grid;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.briefing-calendar-embed__slot {
  display: grid;
  gap: 0.15rem;
  padding: 0.375rem;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.briefing-calendar-embed__slot-time,
.briefing-calendar-embed__slot-venue {
  display: block;
}

.briefing-calendar-embed__slot-venue {
  font-size: 0.6875rem;
}

.briefing-calendar-embed__slot--online {
  background: var(--briefing-calendar-online-bg);
  color: var(--briefing-calendar-online-text);
}

.briefing-calendar-embed__slot--fukuoka {
  background: var(--briefing-calendar-fukuoka-bg);
  color: var(--briefing-calendar-fukuoka-text);
}

.briefing-calendar-embed__slot--tokyo {
  background: var(--briefing-calendar-tokyo-bg);
  color: var(--briefing-calendar-tokyo-text);
}

.briefing-calendar-embed__slot--nagoya {
  background: var(--briefing-calendar-nagoya-bg);
  color: var(--briefing-calendar-nagoya-text);
}

.briefing-calendar-embed__slot--default {
  background: var(--briefing-calendar-bg-subtle);
  color: var(--briefing-calendar-text);
}

.briefing-calendar-embed__empty,
.briefing-calendar-embed__status {
  color: var(--briefing-calendar-text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

@media (max-width: 767px) {
  .briefing-calendar-embed {
    gap: 1.25rem;
  }

  .briefing-calendar-embed__month {
    width: 100%;
  }

  .briefing-calendar-embed__nav {
    width: 2.5rem;
    height: 2.5rem;
  }

  .briefing-calendar-embed__day {
    height: 6.25rem;
    padding: 0.375rem;
  }

  .briefing-calendar-embed__slot {
    padding: 0.25rem;
    font-size: 0.6875rem;
  }

  .briefing-calendar-embed__slot-venue {
    font-size: 0.625rem;
  }
}