* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #0a0a14;
  font-family: "Noto Sans JP", sans-serif;
  color: #e0e0e0;
  min-height: 100vh;
}

.page-header {
  text-align: center;
  padding: 48px 16px 32px;
}

.page-header h1 {
  font-family: "Orbitron", sans-serif;
  font-size: 28px;
  font-weight: 900;
  background: linear-gradient(135deg, #00e5ff, #7c4dff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 3px;
}

.page-header p {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 14px;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 48px;
}

.theme-card {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

.theme-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.theme-preview {
  padding: 20px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* プレビュー内のミニスコアボード */
.preview-round {
  text-align: center;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 2px;
  padding: 6px;
  border-radius: 8px;
}

.preview-row {
  display: grid;
  grid-template-columns: 24px 1fr auto;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 14px;
}

.preview-rank {
  font-weight: 900;
  text-align: center;
}

.preview-name {
  font-weight: 700;
}

.preview-score {
  font-weight: 700;
  text-align: right;
}

.preview-bar-container {
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.preview-bar {
  height: 100%;
  width: 65%;
  border-radius: 2px;
}

/* カード下部のテーマ名 */
.theme-info {
  padding: 14px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.theme-name {
  font-weight: 700;
  font-size: 16px;
}

.theme-desc {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

.theme-arrow {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.3);
  transition: color 0.2s ease, transform 0.2s ease;
}

.theme-card:hover .theme-arrow {
  color: rgba(255, 255, 255, 0.7);
  transform: translateX(4px);
}