/*ヘッダー、ヒーローセクション*/
header {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

header video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  object-fit: cover;
  filter: brightness(0.5);
  z-index: -1;
}

.hero-content {
  position: absolute;
  bottom: 0;
  right: 0;
  padding: 20px 40px;
  color: #fff;
  background: rgba(10, 0, 0, 0.6);
  backdrop-filter: blur(6px);
  clip-path: polygon(
    25% 0,     /* ← 左上をカット（少し右にずらす） */
    100% 0,    /* 右上 */
    100% 100%, /* 右下 */
    0 100%,    /* 左下 */
    0 30%      /* ← 左上をカット（少し下にずらす） */
  );
  box-sizing: border-box;
  text-align: right;
  animation: fadeInUp 1s ease-out forwards;
  opacity: 0;
}

.hero-content h1.main-heading {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0.5rem 0;
}

.hero-content .subheading {
  font-size: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #ffdd57;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-content p {
  margin: 0 0 15px;
  font-size: 1.1rem;
  line-height: 1.5;
}

.btn-primary {
  background: #ffffff;
  color: #000000;
  border: none;
  padding: 10px 20px;
  font-weight: bold;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
  width:100%;
}

.btn-primary:hover {
  background: #dddddd;
}

/*トップニュース*/
.top-news {
position:absolute;left:20px;bottom:110px;height:100px;
}

.top-news p {
border-bottom:solid 1px #ccc;
}

.top-news span {
display:block;
margin-top:5px;
color:#ccc;
font-weight:bold;
font-size:0.7rem;
}

/*セクション共通*/
section {
  padding: 40px 0;
  max-width: 1200px;
  margin: 0 auto;
  color:#eee;
}

.section-title-wrapper {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5em;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 700;
  color: #fff;
  text-align: left;
  letter-spacing: 0.1em;
  padding-bottom: 0.3em;
  display: inline-block;
  white-space: nowrap;
}

.section-title-line {
  flex-grow: 1;
  height: 2px;
  background-color: #ffcc00;
  opacity: 0.7;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5em;
}

.section-icon {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #ffcc00;
  box-shadow: 0 0 8px #ffcc00;
}

/*イベント概要*/
.about-content {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: center;
  padding-left:5vw;
}

.about-image-group {
  display: flex;
  gap: 16px;
  width: 45%;
  max-width: 600px;
  justify-content: center;
}

.photo {
  border-radius: 14px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  object-fit: cover;
  height: 180px;
  width: auto;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.photo-a {
  margin-top: 0;
}

.photo-b {
  margin-top: 20px;
}

.photo-c {
  margin-top: 10px;
}

.about-text {
  width: 40%;
  min-width: 280px;
  max-width: 450px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-sizing: border-box;
  margin-left: auto;
  background-color: rgba(0, 0, 0, 0.5);
  padding: 24px 32px;
  box-sizing: border-box;
}

/*スケジュール*/
.schedule .section-subtitle {
  text-align: center;
  margin-bottom: 3em;
  font-size: 1rem;
}

.schedule-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
}

.schedule-item {
  background: #111;
  border: 1px solid #fff;
  padding: 30px 20px;
  width: 300px;
  text-align: center;
  transition: transform 0.3s ease;
}

.schedule-item:hover {
  transform: scale(1.03);
}

.schedule-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.schedule-date {
  font-size: 0.95rem;
  margin-bottom: 20px;
  color: #ccc;
}

.schedule-link {
  display: inline-block;
  color: #fff;
  border: 1px solid #fff;
  padding: 10px 20px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: background 0.3s, color 0.3s;
}

.schedule-link:hover {
  background: #fff;
  color: #000;
}


/* Coming Soon バナー */
.coming-soon-banner {
  text-align: center;
  padding: 40px 20px;
  border: 1px solid #333;
  background: linear-gradient(135deg, #0a0a0a 0%, #111 50%, #0a0a0a 100%);
  max-width: 500px;
  margin: 0 auto;
}
.coming-soon-label {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: #888;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}
.coming-soon-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}
.coming-soon-title span {
  display: inline-block;
  margin-left: 0.3em;
  color: #ffcc00;
  text-shadow: 0 0 12px rgba(255,204,0,0.4);
}
.coming-soon-sub {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #ffcc00;
  margin-bottom: 1rem;
  animation: comingSoonPulse 2.5s ease-in-out infinite;
}
@keyframes comingSoonPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.coming-soon-desc {
  font-size: 0.85rem;
  color: #888;
  line-height: 1.6;
}

/*これまでのライブ*/
.past-live-more-links {
  text-align: center;
  margin-top: 1em;
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.past-live-inner {
  max-width: 700px;
  margin: 0 auto;
}

.past-live-description {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom:2em;
}

.youtube-wrapper {
  position: relative;
  width: 100%;
  max-width: 700px;
  border-radius: 8px;
  overflow: hidden;
  margin: 0 auto 2em;
}

.youtube-wrapper::after {
  content: "";
  display: block;
  padding-top: 56.25%; /* 16:9の比率（9 ÷ 16 × 100） */
}

.youtube-wrapper iframe {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/*スポンサー*/
.sponsor {
  margin-bottom:80px;
}

.sponsor-photo {
  position: relative;
  background-image: url('../img/live4.jpg');
  background-size: cover;
  background-position: center;
  height: 400px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding:0;
}

.sponsor-text {
  background: linear-gradient(to bottom, rgba(0,0,0,0), rgba(0,0,0,0.9));
  padding:1.5em 1em;
  display: flex;
  flex-direction:column;
  align-items: center;
  justify-content: flex-end;
  height:300px;
  color: white;
  text-align: center;
  width: 100%;
}

.sponsor-call {
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
  background: rgba(0,1,0,0.5);
  padding:0.7rem;
  text-align: center;
  max-width: 700px;
  margin: 0 auto 1em;
  font-size: 1.1rem;
  color: #ddd;
  line-height: 1.6;
  white-space: normal; /* 改行は自然に */
}

.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;

}

.partner-logo {
  max-height: 60px;
  max-width: 180px;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease;
}

.partner-logo:hover {
  filter: brightness(1) invert(0);
}


/*モバイル*/
@media (max-width: 768px) {
  .section-title-line {
    display:none;
  }
  .section-title-wrapper {
    justify-content:center;
  }
  .section-title {
    font-size: 2.2rem;
    border-bottom:#f0c000 1px solid;
  }
  .section-icon {
    width: 50px;
    height: 50px;
  }

  /*ヒーローセクション*/
  .hero-content h1 {
    font-size: 2.8rem;
  }

  /*イベント概要*/
  .about-content {
    flex-direction: column;
    align-items: center;
    padding-left:0;
  }
  .about-image-group,
  .about-text {
    width: 100%;
  }
  .about-image-group {
    justify-content: space-between;
  }
  .photo-b {
    margin-top: 0;
  }
  .photo-c {
    margin-top: 0;
  }

  /*これまでのライブ*/
  .past-live-inner {
    flex-direction: column;
    max-width: 95vw; /* 画面幅に合わせて余裕を持つ */
    margin: 0 auto;
    gap: 1.5em; /* 項目間の隙間を適度に */
  }
  .past-live-description {
    text-align: center;
    margin-bottom: 1.5em;
    min-width: auto;
    font-size: 1.1rem; /* 少し大きく読みやすく */
    line-height: 1.5;
    padding: 0 1em; /* 左右余白を追加 */
  }
  .youtube-wrapper {
    min-width: auto;
    max-width: 100%;
    border-radius: 8px;
  }
  .youtube-wrapper iframe {
    border-radius: 8px; /* 角丸を維持 */
  }

  /*スポンサー*/
  .sponsor {
    margin-bottom: 60px;
    padding: 0 1em;
  }
  .sponsor-photo {
    height: 250px; /* モバイルで高さを控えめに */
    padding: 0;
  }
  .sponsor-text {
    height: auto;
    padding: 1.5em 1em;
    font-size: 1rem;
    line-height: 1.4;
  }
  .sponsor-call {
    background:none;
    padding: 0.5rem 1em;
    font-size: 1rem;
    max-width: 100%;
    margin: 0 auto 0.5em;
    color: #ddd;
    font-weight:bold;
  }
  .partner-logos {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px; /* 少し隙間を詰める */
    margin-bottom: 40px;
  }
  .partner-logo {
    max-height: 40px;
    max-width: 120px;
    filter: brightness(0) invert(1);
    transition: filter 0.3s ease;
  }
  .partner-logo:hover {
    filter: brightness(1) invert(0);
  }

  .hero-content {
    display: none;
  }

  .about-image-group {
    width: 100%;
    justify-content: center;
  }
  .about-text {
    width: 100%;
    margin-top: 1rem;
    padding-right:5px;
    padding-left:5px
  }
  .about-text p {
    text-aling:left;
  }
  .schedule-list {
    flex-direction: column;
    align-items: center;
  }
  .schedule-item {
    width: 90%;
  }
}

@media screen and (max-width: 480px) {
  .past-live-more-links {
    flex-direction: column;
    gap: 10px;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .section-icon {
    width: 40px;
    height: 40px;
  }
  .schedule-item {
    width: 100%;
  }
}