@media (max-width: 768px) {
  html, body {
    margin: 0;
    padding: 0;
    background: #ffffff;
    overflow-x: hidden;
    font-family: 'Segoe UI', sans-serif;
  }

  /* ? Fix visual gap above card */
  .navbar {
    padding: 0.75rem 1rem;
    position: relative;
    z-index: 1001;
    border-bottom: 1px solid #ddd; /* ? add bottom border for visual break */
  }

  main {
    padding-top: 20px !important; /* ? space below navbar */
    margin-top: 0 !important;
  }

  .api-container {
    margin: 12px;
    padding: 20px 16px;
    border-radius: 12px;
    background: #fff;
  }

  .api-header {
    text-align: center;
    margin-bottom: 20px;
  }

  .api-header img {
    max-width: 64px;
    margin: 0 auto 12px;
  }

  .api-header h1 {
    font-size: 22px;
    margin-bottom: 8px;
  }

  .api-header p {
    font-size: 14px;
    color: #555;
  }

  .featured-badge {
    font-size: 11px;
    padding: 3px 8px;
    margin-left: 8px;
  }

  .api-details {
    flex-direction: column;
    gap: 24px;
  }

  .api-description, .api-specs {
    min-width: 100%;
  }

  .api-description h3,
  .api-specs h4 {
    font-size: 18px;
    margin-bottom: 10px;
  }

  .api-description p,
  .api-specs span {
    font-size: 14px;
    line-height: 1.5;
  }

  .spec-item {
    justify-content: space-between;
    font-size: 14px;
  }

  .api-buttons {
    margin-top: 30px;
  }

  .api-buttons a {
    width: 100%;
    margin: 8px 0;
    display: block;
    font-size: 16px;
    padding: 12px;
    text-align: center;
  }

  .tag-badge {
    font-size: 12px;
    padding: 4px 10px;
    margin-top: 5px;
    display: inline-block;
  }

  /* ? Optional cleanup for dropdown */
  .collapse.navbar-collapse {
    background-color: #e9ecef;
    border-radius: 0 0 10px 10px;
    padding: 1rem;
    text-align: center;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
  }

  .navbar-toggler {
    margin-left: auto;
    border: none;
    background: transparent;
  }

  .navbar-brand {
    justify-content: center;
  }

  .navbar-brand img {
    height: 48px;
  }
}