:root {
  --color-page: #f5f4f0;
  --color-surface: #ffffff;
  --color-ink: #272a35;
  --color-muted: #667085;
  --color-border: #e3e5e9;
  --color-accent: #5d63b9;
  --color-accent-soft: #eef0ff;
  --color-live: #c64755;
  --color-live-soft: #fff0f2;
  --color-shadow: rgba(41, 45, 76, 0.1);
  --radius-card: 1.25rem;
  --radius-pill: 999px;
  --content-width: 1120px;
}

* { box-sizing: border-box; }

html { background: var(--color-page); }

body {
  min-width: 320px;
  margin: 0;
  color: var(--color-ink);
  background: radial-gradient(circle at 100% 0, #e9eafd 0, transparent 30rem), var(--color-page);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.6;
}

button, a { font: inherit; }

.site-shell { width: min(calc(100% - 2rem), var(--content-width)); margin: 0 auto; padding: clamp(2.5rem, 7vw, 5.5rem) 0 4rem; }

.hero { margin-bottom: clamp(2rem, 5vw, 3.75rem); }
.eyebrow { margin: 0 0 .5rem; color: var(--color-accent); font-size: .78rem; font-weight: 800; letter-spacing: .14em; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(2.25rem, 7vw, 4.25rem); letter-spacing: -.05em; line-height: 1.1; }
.section-heading { display: flex; align-items: end; justify-content: flex-end; gap: 1.25rem; margin-bottom: 1.5rem; }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: flex-end; }
.filter-button {
  min-height: 2.65rem;
  padding: .5rem .9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-surface);
  cursor: pointer;
  font-weight: 700;
}
.filter-button:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-button.is-active { border-color: var(--color-accent); color: #fff; background: var(--color-accent); }
.filter-button:focus-visible, .youtube-link:focus-visible { outline: 3px solid #252a70; outline-offset: 3px; }

.schedule-message { min-height: 1.6em; margin: 0 0 1rem; color: var(--color-muted); }
.schedule-message.is-error { padding: 1rem 1.1rem; border-left: 4px solid var(--color-live); border-radius: .5rem; color: #8a2632; background: var(--color-live-soft); }
.schedule-message.is-empty { padding: 1.25rem; border: 1px dashed var(--color-border); border-radius: var(--radius-card); background: rgba(255,255,255,.6); }

.schedule-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); gap: 1rem; }
.schedule-card { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 100%; padding: 1.25rem; border: 1px solid var(--color-border); border-radius: var(--radius-card); background: var(--color-surface); box-shadow: 0 8px 24px var(--color-shadow); }
.schedule-card.is-live { border: 2px solid var(--color-live); box-shadow: 0 10px 28px rgba(198, 71, 85, .15); }
.schedule-card.is-live::before { position: absolute; top: 0; left: 1.25rem; width: 3.5rem; height: 4px; border-radius: 0 0 99px 99px; background: var(--color-live); content: ""; }
.card-top { display: flex; align-items: start; justify-content: space-between; gap: .75rem; }
.date { margin: 0; color: var(--color-accent); font-size: 1.55rem; font-weight: 850; letter-spacing: -.04em; line-height: 1.1; }
.year { display: block; margin-bottom: .3rem; color: var(--color-muted); font-size: .72rem; font-weight: 750; letter-spacing: .06em; }
.weekday { margin-left: .3rem; }
.status { flex: none; margin: 0; padding: .18rem .55rem; border-radius: var(--radius-pill); color: var(--color-accent); background: var(--color-accent-soft); font-size: .72rem; font-weight: 850; letter-spacing: .06em; }
.status-live { color: #9e2231; background: var(--color-live-soft); }
.time { margin: .65rem 0 .85rem; font-size: 1.3rem; font-weight: 850; letter-spacing: -.03em; line-height: 1.2; }
.category { align-self: flex-start; margin: 0 0 .7rem; padding: .18rem .55rem; border-radius: var(--radius-pill); color: #4d5197; background: var(--color-accent-soft); font-size: .78rem; font-weight: 750; }
.title { margin: 0; font-size: 1.3rem; line-height: 1.35; }
.content-name { margin: .55rem 0 0; color: var(--color-muted); font-weight: 700; }
.description { margin: .55rem 0 0; color: var(--color-muted); font-size: .94rem; }
.card-footer { display: flex; align-items: end; min-height: 2.75rem; margin-top: auto; padding-top: 1.2rem; }
.youtube-link { display: inline-flex; align-items: center; min-height: 2.55rem; padding: .45rem .8rem; border-radius: .65rem; color: #fff; background: #d93025; font-size: .9rem; font-weight: 800; text-decoration: none; }
.youtube-link:hover { background: #b6251c; }

@media (max-width: 620px) {
  .site-shell { width: min(calc(100% - 1.25rem), var(--content-width)); padding-top: 2.4rem; }
  .section-heading { align-items: start; flex-direction: column; }
  .filters { width: 100%; justify-content: start; }
  .filter-button { flex: 1 1 auto; }
  .schedule-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation-duration: .01ms !important; } }