/* ==============================
   睡眠分析機能専用スタイル
   ============================== */

/* --- 睡眠分析カード専用 --- */
.sleep-summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.sleep-card {
  background: white;
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sleep-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.sleep-card h3 {
  font-size: 14px;
  color: #555;
  margin-bottom: 0.5rem;
}

.sleep-card .stat-value {
  font-size: 24px;
  font-weight: 700;
  color: #111;
  margin-bottom: 0.5rem;
}

.sleep-card .stat-sub {
  font-size: 14px;
  color: #6b7280;
}

/* ==============================
   グラフ
   ============================== */
#dailySleepChart {
  height: 100%;
  max-height: 700px;
  width: 100%;
  max-width: 1500px;
  margin: 50px auto;
}