/* ========================================
   AI DJ CLUB v2 - about.css
   about.html 固有のスタイル
   ======================================== */

/* ---- ヒーロー ---- */
.about-hero {
  position: relative;
  background: var(--bg);
  padding: clamp(80px, 12vw, 140px) 0 clamp(60px, 10vw, 100px);
  overflow: hidden;
}

.about-hero::before {
  content: '';
  position: absolute;
  top: -150px;
  right: -150px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(192, 132, 252, 0.1) 0%, transparent 65%);
  pointer-events: none;
}

.hero-sub-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-sub-label::before {
  content: '·';
  margin-right: 8px;
  color: var(--accent);
}

.hero-main-title {
  font-family: var(--font-sans);
  font-size: clamp(4rem, 14vw, 11rem);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 28px;
}

.hero-catch-box {
  display: inline-block;
  background: var(--text);
  padding: 12px 24px;
  border-radius: 4px;
  margin-bottom: 32px;
}

.hero-catch-box h2 {
  color: #000;
  font-size: clamp(1rem, 3vw, 1.6rem);
  font-weight: 700;
  line-height: 1.3;
  margin: 0;
  letter-spacing: -0.01em;
}

.hero-description p {
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  max-width: 680px;
  font-weight: 400;
}

@media (max-width: 768px) {
  .hero-description p br { display: none; }
  .hero-catch-box { display: block; }
}

/* ---- 音楽生成チーム (feature) ---- */
.feature-section {
  background: var(--bg);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.feature-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(192, 132, 252, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.feature-section .site-inner {
  position: relative;
  z-index: 1;
}

.feature-card {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 24px 28px;
  border-radius: var(--radius);
  transition: background var(--transition), border-color var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
}

.card-media {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #111;
}

.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.card-body p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
  text-indent: 0 !important;
}

@media (max-width: 600px) {
  .feature-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---- 演出チーム (production) ---- */
.production-section {
  background: var(--bg);
  border-top: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 8vw, 100px) 0;
}

.production-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 50%, rgba(59, 49, 113, 0.3) 0%, transparent 60%);
  pointer-events: none;
}

.production-section .site-inner {
  position: relative;
  z-index: 1;
}

.production-header {
  margin-bottom: clamp(32px, 5vw, 56px);
}

.sub-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: block;
  margin-bottom: 10px;
}

.sub-label::before {
  content: '·';
  margin-right: 6px;
  color: var(--accent);
}

.main-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
}

.production-layout {
  display: flex;
  align-items: stretch;
  gap: 24px;
  margin-bottom: 48px;
}

.production-card {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3vw, 40px);
  display: flex;
  gap: clamp(20px, 3vw, 36px);
  align-items: flex-start;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color var(--transition);
}

.production-card:hover {
  border-color: var(--border-accent);
}

.card-image-wrapper {
  flex-shrink: 0;
  width: 160px;
  height: 210px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
}

.card-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-text-content h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.purple-text {
  color: var(--accent);
}

.card-text-content p {
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--text-muted);
  text-indent: 0 !important;
}

.vertical-decoration {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-sans);
  font-size: 3.5rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  letter-spacing: 0.1em;
  flex-shrink: 0;
  width: 1em;
  min-width: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
}

@media (max-width: 900px) {
  .production-layout {
    flex-direction: column;
    gap: 16px;
  }
  .production-card {
    flex-direction: column;
  }
  .card-image-wrapper {
    width: 100%;
    height: 200px;
  }
  .vertical-decoration {
    display: none;
  }
}

/* ---- 広報チーム (pr) ---- */
.pr-section {
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border);
  padding: clamp(64px, 10vw, 120px) 0;
}

.pr-header {
  margin-bottom: clamp(40px, 6vw, 64px);
}

.pr-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.pr-item {
  display: flex;
  gap: 28px;
  align-items: stretch;
}

.pr-img-box {
  flex-shrink: 0;
  width: 200px;
  height: 160px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
  border: 1px solid var(--border);
}

.pr-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pr-text-box {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 32px);
  background: var(--bg-card);
  transition: border-color var(--transition);
}

.pr-text-box:hover {
  border-color: var(--border-accent);
}

.pr-text-box h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
  line-height: 1.4;
}

.highlight-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, #6366f1 100%);
  color: #fff;
  font-weight: 800;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.pr-text-box p {
  font-size: 0.875rem;
  line-height: 1.9;
  color: var(--text-muted);
  text-indent: 0 !important;
}

@media (max-width: 768px) {
  .pr-item {
    flex-direction: column;
    gap: 16px;
  }
  .pr-img-box {
    width: 100%;
    height: 180px;
  }
}