/* COURSE DETAIL V47 - public sales page layout */
:root{
  --cd47-dark:#071b37;
  --cd47-dark-2:#0c274d;
  --cd47-blue:#2f80ed;
  --cd47-text:#132238;
  --cd47-muted:#64748b;
  --cd47-soft:#edf4f8;
  --cd47-border:#e5edf6;
}

.cd47-container{max-width:1120px;margin:0 auto;padding:0 16px;}
.cd47-hero{background:linear-gradient(135deg,#071b37 0%,#0c274d 58%,#071426 100%);color:#fff;padding:64px 0 96px;position:relative;overflow:hidden;}
.cd47-hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 24% 42%,rgba(47,128,237,.18),transparent 36%),radial-gradient(circle at 78% 18%,rgba(255,255,255,.08),transparent 30%);pointer-events:none;}
.cd47-hero-left{position:relative;z-index:1;max-width:760px;}
.cd47-hero h1{font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:36px;line-height:1.22;font-weight:900;letter-spacing:-.02em;margin:0 0 20px;color:#fff;text-wrap:balance;word-spacing:.05em;}
.cd47-hero-desc{font-size:15.5px;line-height:1.75;color:rgba(255,255,255,.93);max-width:720px;margin:0 0 32px;text-wrap:pretty;}
.cd47-metrics{display:flex;align-items:center;gap:42px;flex-wrap:wrap;}
.cd47-instructor,.cd47-metric-item{display:flex;align-items:center;gap:14px;color:#fff;min-width:165px;}
.cd47-avatar{width:58px;height:58px;border-radius:50%;overflow:hidden;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f8fbff,#dbeafe);color:#12345e;font-size:20px;font-weight:900;box-shadow:0 10px 25px rgba(0,0,0,.25);flex:0 0 auto;}
.cd47-avatar img{width:100%;height:100%;object-fit:cover;display:block;}
.cd47-metric-icon{width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.08);box-shadow:0 12px 25px rgba(0,0,0,.2);flex:0 0 auto;}
.cd47-metric-icon i{font-size:34px;color:#fff;line-height:1;}
.cd47-instructor span,.cd47-metric-item span{display:block;font-size:13px;color:rgba(255,255,255,.68);line-height:1.2;margin-bottom:4px;}
.cd47-instructor strong,.cd47-metric-item strong{display:block;font-size:18px;line-height:1.25;font-weight:900;color:#fff;}
.cd47-metric-item small{font-size:16px;font-weight:900;color:#fff;}

.cd47-body{background:var(--cd47-soft);padding:0 0 72px;}
.cd47-grid{display:grid;grid-template-columns:minmax(0,1fr) 352px;gap:34px;align-items:start;}
.cd47-main{padding-top:34px;}
.cd47-aside{margin-top:-232px;position:relative;z-index:30;align-self:start;}
.cd47-buy-card{background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 18px 42px rgba(15,23,42,.16);position:sticky;top:86px;z-index:30;color:var(--cd47-text);will-change:transform;}
.cd47-buy-thumb{aspect-ratio:16/9;background:#eef2f7;overflow:hidden;}
.cd47-buy-thumb img{width:100%;height:100%;display:block;object-fit:cover;}
.cd47-thumb-empty{height:100%;display:flex;align-items:center;justify-content:center;color:#9aa9bd;font-size:44px;}
.cd47-buy-body{padding:0 18px 22px;}
.cd47-price-row{min-height:78px;display:flex;align-items:center;gap:12px;border-bottom:1px solid #edf2f7;margin-bottom:16px;}
.cd47-price-row strong{font-size:28px;line-height:1;color:#2563eb;font-weight:900;}
.cd47-price-row del{font-size:14px;color:#8ca0b6;}
.cd47-price-row span{margin-left:auto;background:#fee2e2;color:#e11d48;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:800;}
.cd47-buy-button{width:100%;height:54px;border-radius:10px;background:var(--cd47-blue);box-shadow:0 8px 16px rgba(47,128,237,.22);color:#fff!important;text-decoration:none;display:flex;align-items:center;justify-content:center;gap:8px;font-size:18px;font-weight:900;text-transform:uppercase;letter-spacing:.01em;margin-bottom:18px;transition:.16s ease;}
.cd47-buy-button:hover{background:#1f6fe5;color:#fff!important;transform:translateY(-1px);}
.cd47-buy-button.is-free{background:#16a34a;}
.cd47-buy-button.is-free:hover{background:#15803d;}
/* v108: nút Thanh toán + giỏ hàng khi chưa mua */
.cd47-buy-row{display:flex;gap:10px;margin-bottom:18px;}
.cd47-buy-row .cd47-buy-pay{flex:1;margin-bottom:0;background:#ff6b1a;box-shadow:0 8px 16px rgba(255,107,26,.25);}
.cd47-buy-row .cd47-buy-pay:hover{background:#e85f15;}
.cd47-cart-btn{width:54px;height:54px;flex:0 0 54px;border-radius:10px;border:2px solid var(--cd47-blue);background:#fff;color:var(--cd47-blue);font-size:22px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:.16s ease;position:relative;}
.cd47-cart-btn:hover{background:var(--cd47-blue);color:#fff;transform:translateY(-1px);}
.cd47-cart-btn.added{background:#16a34a;border-color:#16a34a;color:#fff;}
.cd47-cart-btn .cd47-cart-pop{position:absolute;top:-8px;right:-8px;min-width:20px;height:20px;border-radius:50%;background:#dc2626;color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;padding:0 5px;}
.cd47-feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px 18px;padding-top:18px;border-top:1px solid #edf2f7;}
.cd47-feature{display:grid;grid-template-columns:44px 1fr;align-items:center;gap:10px;}
.cd47-feature>i{width:44px;height:44px;border-radius:50%;background:#eef6ff;color:#2f80ed;display:flex;align-items:center;justify-content:center;font-size:18px;}
.cd47-feature p{margin:0;color:#6b7b91;font-size:14px;line-height:1.25;font-weight:500;}
.cd47-feature strong{display:block;color:#26364e;font-size:15px;font-weight:900;margin-top:2px;}

.cd47-card{background:#fff;border-radius:14px;box-shadow:0 12px 32px rgba(15,23,42,.08);overflow:hidden;}
.cd47-tabs{height:58px;display:flex;align-items:center;gap:28px;border-bottom:1px solid #edf2f7;padding:0 24px;overflow-x:auto;white-space:nowrap;}
.cd47-tab{height:58px;display:flex;align-items:center;gap:8px;border-bottom:2px solid transparent;color:#64748b;text-decoration:none;font-size:15px;font-weight:700;}
.cd47-tab i{font-size:19px;}
.cd47-tab:hover,.cd47-tab.active{color:#2f80ed;}
.cd47-tab.active{border-bottom-color:#2f80ed;}
.cd47-tab-pane{padding:26px 28px 34px;}
.cd47-tab-pane h2{font-size:18px;line-height:1.35;color:#1a2a44;font-weight:900;margin:0 0 20px;text-transform:none;}
.cd47-about-lead,.cd47-rich-text{font-size:16px;line-height:1.75;color:#27364f;margin:0 0 22px;}
.cd47-red-title{font-size:20px!important;color:#ef4444!important;font-weight:900!important;margin:28px 0 14px!important;}
.cd47-benefit-list{list-style:disc;margin:0 0 18px 20px;padding:0;}
.cd47-benefit-list li{padding:4px 0;color:#16233a;font-size:15.5px;line-height:1.45;}
.cd47-check-list{list-style:disc!important;margin:0 0 18px 20px!important;padding:0!important;}
.cd47-check-list li{padding:4px 0!important;color:#16233a;font-size:15.5px;line-height:1.45;}
.cd47-check-list li:before{content:none!important;display:none!important;}
.cd47-intro-video{width:100%;aspect-ratio:16/9;background:#0b1220;border-radius:14px;overflow:hidden;margin:0 0 24px;box-shadow:0 12px 26px rgba(15,23,42,.12);}
.cd47-intro-video iframe,.cd47-intro-video video{width:100%;height:100%;border:0;display:block;background:#000;}
.cd47-muted{color:#64748b;font-size:14px;margin:0 0 18px;}

.cd47-section{border:1px solid #e5edf6;border-radius:10px;overflow:hidden;margin:0 0 10px;background:#fff;}
.cd47-section-head{width:100%;border:0;background:#f8fbff;padding:15px 18px;display:flex;align-items:center;gap:10px;text-align:left;cursor:pointer;color:#132238;font-size:15px;font-weight:800;}
.cd47-section-head i{color:#8395ac;transition:.18s ease;}
.cd47-section.collapsed .cd47-section-head i{transform:rotate(-90deg);}
.cd47-section-head span{flex:1;}
.cd47-section-head em{font-style:normal;background:#e8eef7;color:#475569;border-radius:999px;font-size:12px;padding:4px 10px;font-weight:800;}
.cd47-section.collapsed .cd47-section-body{display:none;}
.cd47-lesson-row{display:flex;align-items:center;gap:10px;border-top:1px solid #edf2f7;padding:12px 18px 12px 44px;color:#334155;font-size:14px;}
.cd47-lesson-row>span{flex:1;}
.cd47-lesson-row i{color:#64748b;}
.cd47-lesson-row b{background:#22c7df;color:#fff;border-radius:999px;padding:3px 8px;font-size:11px;}
.cd47-lesson-row time{font-size:13px;color:#64748b;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;}
.cd47-teacher-box{display:flex;align-items:center;gap:18px;background:#f8fbff;border:1px solid #e5edf6;border-radius:14px;padding:18px;}
.cd47-teacher-avatar,.cd47-review-avatar{width:72px;height:72px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:900;overflow:hidden;flex:0 0 auto;}
.cd47-teacher-avatar img{width:100%;height:100%;object-fit:cover;}
.cd47-teacher-box h3{margin:0 0 8px!important;color:#132238!important;font-size:20px!important;font-weight:900!important;}
.cd47-teacher-box p{margin:0;color:#53647b;line-height:1.7;}
.cd47-review-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid #edf2f7;}
.cd47-review-avatar{width:48px;height:48px;font-size:18px;}
.cd47-stars{color:#f59e0b;font-size:13px;margin:4px 0 8px;}
.cd47-review-row p{margin:0 0 6px;color:#334155;line-height:1.6;}
.cd47-review-row small{color:#64748b;}

/* Hide old v45 blocks if cached/duplicated */
.cd-side-info-v45,.cd-share-row{display:none!important;}

@media (max-width:991.98px){
  .cd47-hero{padding:34px 0 28px;}
  .cd47-hero h1{font-size:26px;}
  .cd47-hero-desc{font-size:14px;margin-bottom:22px;}
  .cd47-metrics{gap:16px 22px;}
  .cd47-avatar,.cd47-metric-icon{width:46px;height:46px;}
  .cd47-metric-icon i{font-size:26px;}
  .cd47-instructor strong,.cd47-metric-item strong{font-size:16px;}
  .cd47-grid{display:block;}
  .cd47-aside{margin-top:20px;}
  .cd47-buy-card{position:static;max-width:420px;margin:0 auto;}
  .cd47-main{padding-top:20px;}
  .cd47-tabs{gap:18px;padding:0 18px;}
  .cd47-tab-pane{padding:22px 18px 28px;}
}
@media (max-width:575.98px){
  .cd47-container{padding:0 12px;}
  .cd47-hero h1{font-size:24px;}
  .cd47-metrics{display:grid;grid-template-columns:1fr;gap:14px;}
  .cd47-feature-grid{gap:14px 10px;}
  .cd47-buy-body{padding-left:14px;padding-right:14px;}
  .cd47-price-row strong{font-size:24px;}
  .cd47-buy-button{height:50px;font-size:16px;}
  .cd47-tabs{height:54px;gap:16px;}
  .cd47-tab{height:54px;font-size:14px;}
  .cd47-tab-pane h2{font-size:17px;}
  .cd47-red-title{font-size:18px!important;}
}

/* V105: bố cục tiêu đề cân giữa cột nội dung và card bên phải sticky mượt */
.cd47-check-list li::before{
  content:none!important;
  display:none!important;
}
.cd47-check-list{
  list-style:disc!important;
  margin-left:20px!important;
}

html,
body{
  min-height:100%!important;
  height:auto!important;
}
body{
  overflow-x:hidden!important;
  overflow-y:auto!important;
}
body .main-content,
.cd47-body,
.cd47-grid,
.cd47-main,
.cd47-content-card{
  min-height:0!important;
  height:auto!important;
  max-height:none!important;
  overflow:visible!important;
}

.cd47-buy-card{
  border-radius:14px!important;
}
.cd47-buy-thumb,
.cd47-buy-thumb img,
.cd47-thumb-empty{
  border-radius:14px 14px 0 0!important;
}
.cd47-buy-thumb{
  overflow:hidden!important;
}

@media (min-width:992px){
  .cd47-hero > .cd47-container{
    display:grid!important;
    grid-template-columns:minmax(0,1fr) 352px!important;
    gap:34px!important;
    align-items:center!important;
    max-width:1120px!important;
    width:100%!important;
    margin:0 auto!important;
    padding-left:16px!important;
    padding-right:16px!important;
    box-sizing:border-box!important;
  }
  .cd47-hero-left{
    grid-column:1!important;
    min-width:0!important;
    max-width:none!important;
    width:100%!important;
    padding:0 14px!important;
    margin:0!important;
    text-align:center!important;
  }
  .cd47-hero h1{
    max-width:820px!important;
    margin:0 auto 18px!important;
    color:#fff!important;
    font-size:clamp(30px,2.45vw,42px)!important;
    line-height:1.2!important;
    letter-spacing:-.02em!important;
    font-weight:900!important;
    text-align:center!important;
    text-transform:none!important;
    white-space:normal!important;
    overflow:visible!important;
    overflow-wrap:anywhere!important;
    word-break:normal!important;
    text-wrap:balance;
  }
  .cd47-hero-desc{
    max-width:760px!important;
    margin:0 auto 30px!important;
    text-align:center!important;
    overflow-wrap:anywhere!important;
    text-wrap:pretty;
  }
  .cd47-metrics{
    justify-content:center!important;
  }

  .cd47-grid{
    grid-template-columns:minmax(0,1fr) 352px!important;
    gap:34px!important;
    align-items:start!important;
    overflow:visible!important;
  }
  .cd47-body{
    position:relative!important;
    overflow:visible!important;
  }
  .cd47-aside{
    position:-webkit-sticky!important;
    position:sticky!important;
    top:82px!important;
    margin-top:-232px!important;
    align-self:start!important;
    z-index:45!important;
    width:100%!important;
    min-width:0!important;
    transform:none!important;
    transition:none!important;
    will-change:auto!important;
  }
  .cd47-buy-card{
    position:relative!important;
    top:auto!important;
    width:100%!important;
    max-width:none!important;
    max-height:none!important;
    overflow:visible!important;
    transform:none!important;
    transition:none!important;
    will-change:auto!important;
  }
}

@media (min-width:992px) and (max-width:1199.98px){
  .cd47-hero > .cd47-container,
  .cd47-grid{
    grid-template-columns:minmax(0,1fr) 330px!important;
    gap:24px!important;
  }
  .cd47-hero h1{
    font-size:clamp(27px,2.7vw,35px)!important;
  }
  .cd47-hero-left{
    padding:0!important;
  }
  .cd47-metrics{
    gap:20px 24px!important;
  }
}

@media (max-width:991.98px){
  html,
  body{
    overflow-x:hidden!important;
    overflow-y:auto!important;
  }
  .cd47-hero > .cd47-container{
    display:block!important;
    max-width:1120px!important;
    margin:0 auto!important;
  }
  .cd47-hero-left{
    max-width:100%!important;
    text-align:center!important;
  }
  .cd47-hero h1{
    white-space:normal!important;
    text-align:center!important;
    overflow-wrap:anywhere!important;
    word-break:normal!important;
    text-wrap:balance;
  }
  .cd47-hero-desc{
    margin-left:auto!important;
    margin-right:auto!important;
    text-align:center!important;
  }
  .cd47-metrics{
    justify-content:center!important;
  }
  .cd47-aside{
    position:static!important;
    top:auto!important;
    margin-top:20px!important;
    width:100%!important;
    transform:none!important;
  }
  .cd47-buy-card{
    position:static!important;
    top:auto!important;
    max-width:420px!important;
    max-height:none!important;
    margin:0 auto!important;
    overflow:visible!important;
  }
}

@media (max-width:575.98px){
  .cd47-hero-left{
    padding:0 4px!important;
  }
  .cd47-hero h1{
    font-size:24px!important;
    line-height:1.28!important;
  }
  .cd47-metrics{
    justify-content:flex-start!important;
    text-align:left!important;
  }
}


/* V107: giữ khối tiêu đề ở giữa cột nội dung, chữ căn trái và đậm rõ hơn. */
.cd47-hero h1{
  width:min(100%,820px)!important;
  margin-left:auto!important;
  margin-right:auto!important;
  text-align:left!important;
  padding-left:0!important;
  padding-right:0!important;
  font-weight:900!important;
  -webkit-text-stroke:.25px currentColor;
}
@media (max-width:991.98px){
  .cd47-hero h1{
    text-align:left!important;
    -webkit-text-stroke:.18px currentColor;
  }
}

/* V116: mở rộng khung trang chi tiết khóa học trên desktop, đồng bộ gần mẫu tham khảo. */
@media (min-width:1200px){
  .cd47-container{
    max-width:1260px!important;
    width:100%!important;
    padding-left:18px!important;
    padding-right:18px!important;
    box-sizing:border-box!important;
  }
  .cd47-hero > .cd47-container{
    max-width:1260px!important;
    grid-template-columns:minmax(0,1fr) 360px!important;
    gap:36px!important;
  }
  .cd47-grid{
    grid-template-columns:minmax(0,1fr) 360px!important;
    gap:36px!important;
  }
  .cd47-hero-left{
    padding:0!important;
    text-align:left!important;
  }
  .cd47-hero h1{
    width:100%!important;
    max-width:900px!important;
    margin:0 0 18px!important;
    text-align:left!important;
    font-size:36px!important;
    line-height:1.22!important;
    overflow-wrap:normal!important;
    word-break:normal!important;
    text-wrap:balance;
  }
  .cd47-hero-desc{
    max-width:860px!important;
    margin:0 0 30px!important;
    text-align:left!important;
  }
  .cd47-metrics{
    justify-content:flex-start!important;
  }
  .cd47-main,
  .cd47-content-card{
    min-width:0!important;
    width:100%!important;
  }
}

@media (min-width:1200px) and (max-width:1399.98px){
  .cd47-container,
  .cd47-hero > .cd47-container{
    max-width:1180px!important;
  }
  .cd47-hero > .cd47-container,
  .cd47-grid{
    grid-template-columns:minmax(0,1fr) 348px!important;
    gap:30px!important;
  }
  .cd47-hero h1{
    font-size:34px!important;
  }
}