@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
  --primary-color: #2c3e50;
  --accent-color: #e67e22; /* 温かみのあるアクセント */
  --bg-gradient: linear-gradient(135deg, #f6f8fd 0%, #f1f5f9 100%);
  --card-bg: #ffffff;
  --text-main: #333333;
  --text-muted: #666666;
  --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --border-radius: 16px;
}

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

body {
  font-family: 'Inter', 'Noto Sans JP', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  padding: 40px 20px 20px;
}

header h1 {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: 10px;
}

header p {
  color: var(--text-muted);
  font-size: 1rem;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  flex: 1;
}

.video-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 30px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.video-card h2 {
  font-size: 1.4rem;
  color: var(--primary-color);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge {
  background: var(--primary-color);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #000;
  border-radius: 8px;
  overflow: hidden;
}

.video-wrapper video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Day 2 (未公開) 用スタイル */
.locked-video {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%);
  color: var(--primary-color);
  text-align: center;
  padding: 20px;
}

.locked-video .icon {
  font-size: 3rem;
  margin-bottom: 15px;
  opacity: 0.7;
}

.locked-video h3 {
  font-size: 1.2rem;
  margin-bottom: 5px;
}

.locked-video p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: auto;
}

@media (max-width: 600px) {
  header h1 {
    font-size: 1.5rem;
  }
  .video-card {
    padding: 20px;
  }
  .video-card h2 {
    font-size: 1.2rem;
  }
}