/* 🔷 Course Banner */
.course-banner {
    position: relative;
    width: 100%;
    height: 900px;
    background-size: cover;
    background-position: center right;
    color: white;
    display: flex;
    align-items: center;
    justify-content: flex-start;
  }
  .course-banner::before {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 0;
  }
  .course-banner .content {
    position: relative;
    max-width: 650px;
    padding-left: 100px;
    z-index: 1;
    text-align: left;
  }
  .course-banner .tagline {
    font-size: 22px;
    margin-bottom: 15px;
    letter-spacing: 2px;
  }
  .course-banner h1 {
    font-size: 60px;
    font-weight: 800;
    color: #00f7ff;
    line-height: 1.2;
    margin-bottom: 40px;
    text-transform: uppercase;
  }
  .course-banner .btn {
    font-size: 16px;
    padding: 12px 25px;
  }
  
  /* 🔷 Course Details Section */
  .course-details-section {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    padding: 50px 100px;
    background: #f9f9f9;
  }
  .course-content-tabs {
    flex: 1 1 60%;
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
  }
  
  /* Tabs */
  .nav-tabs .nav-link {
    font-weight: 600;
    color: #555;
    border-radius: 0;
    padding: 12px 20px;
  }
  .nav-tabs .nav-link.active {
    color: #007bff;
    border-bottom: 2px solid #007bff;
  }
  
  /* Tab content */
  .tab-content {
    margin-top: 25px;
  }
  .tab-content h3 {
    font-size: 28px;
    font-weight: bold;
    color: #333;
  }
  
  /* 🔹 Right Sidebar (Form + Countdown) */
  .course-sidebar {
    flex: 1 1 35%;
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
  }
  
  /* Countdown */
  .countdown {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
  }
  .countdown-box {
    flex: 1 1 45%;
    background: #0d0d2b;
    border: 1px solid #1f1f40;
    border-radius: 10px;
    padding: 20px 15px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  }
  .countdown-box h4 {
    font-size: 30px;
    font-weight: bold;
    color: #00f7ff;
    margin-bottom: 8px;
  }
  .countdown-box span {
    font-size: 14px;
    color: #ffffff;
    opacity: 0.9;
  }
  
  /* Form Styling */
  .course-sidebar input,
  .course-sidebar select {
    margin-bottom: 15px;
    height: 45px;
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 6px;
  }
  .course-sidebar .btn {
    width: 100%;
    margin-top: 10px;
    font-weight: 600;
  }
  
  /* 🔹 Responsive */
  @media (max-width: 992px) {
    .course-banner {
      height: 600px;
    }
    .course-banner .content {
      padding-left: 40px;
    }
    .course-details-section {
      padding: 40px 30px;
      flex-direction: column;
    }
  }
  @media (max-width: 576px) {
    .course-banner {
      height: 500px;
    }
    .course-banner h1 {
      font-size: 36px;
    }
    .countdown {
      gap: 10px;
    }
    .countdown-box {
      flex: 1 1 100%;
    }
  }