.video-popup-overlay{
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 18px;
  }
  .video-popup-overlay.show{ display: flex; }

  .video-popup{
    width: min(980px, 96vw);
    background: rgba(20,20,20,0.98);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 18px;
    box-shadow: 0 18px 60px rgba(0,0,0,0.55);
    overflow: hidden;
  }
  .video-popup-header{
    display:flex;
    align-items:center;
    justify-content: space-between;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.10);
    color: #fff;
  }
  .video-popup-title{
    font-size: 0.95rem;
    opacity: 0.9;
    display:flex;
    gap: 10px;
    align-items: center;
  }
  .video-popup-close{
    border: none;
    background: transparent;
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
    padding: 6px 10px;
    border-radius: 10px;
  }
  .video-popup-close:hover{
    background: rgba(255,255,255,0.10);
  }
  .video-popup-body{
    padding: 12px;
  }
  .video-popup-body video{
    width: 100%;
    height: auto;
    border-radius: 14px;
    background: #000;
  }
  .video-shell{ cursor: pointer; }
  
  
    /* SECTION */
.container-video-demo {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Tiêu đề */
.container-video-demo .text-center {
    text-align: center;
    margin-bottom: 32px;
}

/* GRID video */
.video-demo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* Responsive */
@media (max-width: 1024px) {
    .video-demo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .video-demo-grid {
        grid-template-columns: 1fr;
    }
}
/* Card video */
.video-card {
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

/* Wrapper giữ tỉ lệ 9:16 */
.video-vertical {
    position: relative;
    width: 100%;
    padding-top: 177.78%; /* 16 / 9 */
    background: #000;
}

/* Video fill khung */
.video-vertical video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.video-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}