/* styles.css — シンプル&上品。可読性重視。 */
:root {
  --bg: #0b0c0f;
  --surface: #12141a;
  --card: #181b22;
  --text: #f5f7fa;
  --muted: #b6beca;
  --accent: #67b8ff;
  --accent-strong: #2ea6ff;
  --warning: #ffd166;
  --danger: #ff6b6b;
  --ok: #4cd595;
  --ring: #2a3647;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 14px;
  --radius-sm: 10px;
  --gap: 18px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --surface: #ffffff;
    --card: #ffffff;
    --text: #1c2330;
    --muted: #5a6b82;
    --accent: #0b66ff;
    --accent-strong: #0955d6;
    --warning: #9a6b00;
    --danger: #b00020;
    --ring: #dfe6f3;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: radial-gradient(
      1200px 800px at 20% -10%,
      rgba(103, 184, 255, 0.12),
      transparent 60%
    ),
    radial-gradient(
      900px 700px at 100% 0%,
      rgba(76, 213, 149, 0.08),
      transparent 60%
    ),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo,
    Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

.container {
  width: min(100% - 32px, 960px);
  margin-inline: auto;
}

.site-header {
  position: relative;
  padding: 60px 0 30px;
}

.title {
  margin: 6px 0 10px;
  font-size: clamp(1.6rem, 1.1rem + 2vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.lead {
  color: var(--muted);
  font-size: clamp(0.98rem, 0.9rem + 0.4vw, 1.05rem);
  margin: 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

main.container {
  padding: 24px 0 64px;
}

.card {
  background: linear-gradient(
    180deg,
    var(--card),
    color-mix(in oklab, var(--card), transparent 12%)
  );
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: saturate(1.1) blur(2px);
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: clamp(1.15rem, 1rem + 0.8vw, 1.5rem);
}

.subhead {
  margin: 18px 0 8px;
  font-size: 1.05rem;
  color: var(--muted);
}

.schedule {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--gap);
  display: grid;
  gap: 12px;
}

.schedule li {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px dashed var(--ring);
  border-radius: var(--radius-sm);
  background: color-mix(in oklab, var(--card), transparent 6%);
}

.schedule-body {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: baseline;
}

.schedule-date {
  font-weight: 700;
}

.schedule-time {
  font-variant-numeric: tabular-nums;
  opacity: 0.9;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in oklab, var(--accent), var(--text) 10%);
  background: color-mix(in oklab, var(--accent), transparent 85%);
  color: var(--accent-strong);
  font-size: 0.82rem;
  line-height: 1;
  white-space: nowrap;
}

.badge--accent {
  background: color-mix(in oklab, var(--ok), transparent 82%);
  border-color: color-mix(in oklab, var(--ok), var(--text) 10%);
  color: color-mix(in oklab, var(--ok), black 35%);
}

.notes,
.entry-list {
  margin: 12px 0 0;
  padding-inline-start: 1.2em;
}

.notes li + li,
.entry-list li + li {
  margin-top: 6px;
}

.alert {
  margin-top: 14px;
  padding: 14px 16px;
  border-left: 4px solid var(--danger);
  border-radius: var(--radius-sm);
  background: color-mix(in oklab, var(--danger), transparent 90%);
}

.site-footer {
  border-top: 1px solid var(--ring);
  background: var(--surface);
  padding: 18px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.small {
  margin: 0;
}

/* 印刷時は背景を抑え、読みやすく */
@media print {
  body {
    background: #fff;
    color: #000;
  }
  .card {
    box-shadow: none;
    border-color: #ccc;
    background: #fff;
  }
  .alert {
    background: #fff2f2;
  }
}