/* styles.css - modern simple single-page layout */
:root{
  --bg:#0f1724;
  --card:#0b1220;
  --accent:#7dd3fc;
  --muted:#94a3b8;
  --glass: rgba(255,255,255,0.03);
  --radius:12px;
  --maxw:1100px;
  --page-pad:20px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg, #071126 0%, #07101a 100%);
  color:#e6eef8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:40px 16px;
  display:flex;
  justify-content:center;
  align-items:flex-start;
  min-height:100vh;
}
.container{
  width:100%;
  max-width:var(--maxw);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:18px;
  padding:28px;
  box-shadow: 0 8px 30px rgba(2,6,23,0.7);
  backdrop-filter: blur(6px);
}
.header{
  text-align:center;
  margin-bottom:22px;
}
.title{
  font-size:34px;
  letter-spacing:1px;
  color:var(--accent);
  font-weight:700;
}
.subtitle{
  color:var(--muted);
  margin-top:6px;
  font-size:13px;
}

/* Main layout */
.main{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:22px;
  align-items:start;
}
.card{
  background:var(--glass);
  padding:18px;
  border-radius:12px;
  min-height:220px;
}

/* Video responsive */
.video-wrap{
  position:relative;
  padding-top:56.25%;
  border-radius:10px;
  overflow:hidden;
  background:#000;
}
.video-wrap iframe{position:absolute;left:0;top:0;width:100%;height:100%;border:0}

/* Text area */
.text-area{
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:14px;
  line-height:1.5;
  color:#dbeafe;
}

/* Social links */
.links{
  display:flex;
  gap:10px;
  margin-top:12px;
  flex-wrap:wrap;
}
.btn{
  display:inline-block;
  padding:10px 14px;
  background:transparent;
  border:1px solid rgba(255,255,255,0.06);
  color:var(--accent);
  text-decoration:none;
  border-radius:8px;
  font-size:14px;
  transition:all .18s ease;
}
.btn:hover{transform:translateY(-3px);box-shadow:0 6px 18px rgba(125,211,252,0.06)}

/* Image section */
.cover{
  margin-top:20px;
  text-align:center;
}
.cover img{
  width:100%;
  max-width:720px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,0.04);
}

/* Chapters links */
.chapters{
  margin-top:16px;
  display:flex;
  flex-direction:column;
  gap:8px;
  align-items:flex-start;
}
.chapter-link{
  color:#cfe9ff;
  text-decoration:none;
  font-weight:600;
  background:linear-gradient(90deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  padding:10px 14px;
  border-radius:10px;
  width:100%;
  max-width:360px;
  border:1px solid rgba(255,255,255,0.03);
}
.chapter-link:hover{transform:translateX(6px)}

/* Footer */
.footer{
  margin-top:20px;
  text-align:center;
  color:var(--muted);
  font-size:13px;
  padding-top:12px;
  border-top:1px solid rgba(255,255,255,0.02);
}

/* Responsive */
@media (max-width:860px){
  .main{grid-template-columns:1fr; }
  .title{font-size:28px}
  body{padding:18px}
}

/* Disclaimer box */
.disclaimer{
  margin-top:16px;
  background:rgba(255,255,255,0.03);
  border-left:4px solid var(--accent);
  padding:14px 16px;
  border-radius:10px;
  font-size:14px;
  line-height:1.5;
  color:#cbd5e1;
}
.disclaimer h3{
  margin-bottom:6px;
  font-size:15px;
  color:var(--accent);
  font-weight:600;
}