/* Shared card styles: software license tiers and tutorial topic bubbles. */
/* Feature Index layout */
  .feature-index {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 10px 32px 30px 32px; /* left/right padding added */
    box-sizing: border-box;
  }

  .feature-group {
    margin: 18px 0 26px 0;
  }

  .feature-group-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 12px 0;
    letter-spacing: 0.2px;
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  /* Responsive: 2 columns on tablet, 1 column on phone for easier reading */
  @media (max-width: 1024px) {
    .feature-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }

  @media (max-width: 620px) {
    .feature-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .feature-card {
      padding: 16px;
      min-height: 0;
    }

    .feature-card-title {
      font-size: 22px;
      margin-bottom: 8px;
    }

    .feature-card-detail {
      margin-top: 8px;
      font-size: 19px;
      line-height: 1.45;
    }
  }

  /* Gradient-border card */
  .feature-card {
    position: relative;
    border-radius: 14px;
    padding: 14px;
    min-height: 110px;
    box-sizing: border-box;

    /* gradient border trick */
    border: 2px solid transparent;
    background:
      linear-gradient(#ffffff, #ffffff) padding-box,
      linear-gradient(135deg, #1f6feb, #a855f7, #22c55e) border-box;

    /* subtle depth */
    box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    transition: transform 120ms ease, box-shadow 120ms ease;
    cursor: pointer;
  }

  .feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0,0,0,0.12);
  }

  .feature-card-title {
    margin: 0 0 14px 0;
    font-size: 22px;
    font-weight: 800;
    line-height: 1.15;
  }

  .feature-card-detail {
    margin: 0;
    margin-top: 12px;
    font-size: 17px;
    line-height: 1.35;
    opacity: 0.85;
  }

  /* Optional: make cards look like links later */
  .feature-card a {
    color: inherit;
    text-decoration: none;
    display: block;
  }

  @media (max-width: 900px) {
    .feature-index {
      padding-left: 58px !important;
      padding-right: 58px !important;
    }

    .feature-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
      gap: 18px !important;
    }

    .feature-card {
      padding: 18px !important;
      min-height: 0 !important;
    }

    .feature-card-title {
      font-size: 24px !important;
      line-height: 1.15 !important;
      margin-bottom: 10px !important;
    }

    .feature-card-detail {
      font-size: 24px !important;
      line-height: 1.45 !important;
      margin-top: 8px !important;
    }
  }

  .ads-mobile .feature-index {
    padding-left: 58px !important;
    padding-right: 58px !important;
  }

  .ads-mobile .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 18px !important;
  }

  .ads-mobile .feature-card {
    padding: 18px !important;
    min-height: 0 !important;
  }

  .ads-mobile .feature-card-title {
    font-size: 24px !important;
    line-height: 1.15 !important;
    margin-bottom: 10px !important;
  }

  .ads-mobile .feature-card-detail {
    font-size: 24px !important;
    line-height: 1.45 !important;
    margin-top: 8px !important;
  }

/* The tutorial directory keeps its cards and full guides responsive. */
.ads-tutorials-page .feature-index {
  text-align: left;
}

.ads-tutorials-page .tutorial-index-title {
  margin: 8px 0 12px;
  color: #111820;
  font-size: 30px;
  line-height: 1.2;
}

.ads-tutorials-page .tutorial-index-description {
  margin: 0 0 24px;
  padding: 0;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.5;
}

.ads-tutorials-page .feature-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.ads-tutorials-page .feature-card-link:focus-visible {
  outline: 2px solid #7d8b52;
  outline-offset: 4px;
  border-radius: 14px;
}

.ads-tutorials-page .feature-card {
  height: 100%;
}

.ads-tutorials-page .feature-card-detail {
  padding: 0;
  font-weight: 400;
}

.ads-tutorials-page .ads-tutorial-content {
  box-sizing: border-box;
  width: 90%;
  max-width: 800px;
  margin: 0 auto;
  overflow-wrap: anywhere;
}

.ads-tutorials-page .ads-tutorial-content img {
  max-width: 100%;
  height: auto;
}

@media (max-width: 900px) {
  .ads-tutorials-page .feature-index {
    padding-left: 18px !important;
    padding-right: 18px !important;
  }

  .ads-tutorials-page .feature-card-title {
    font-size: 20px !important;
  }

  .ads-tutorials-page .feature-card-detail {
    font-size: 17px !important;
  }
}

@media (max-width: 600px) {
  .ads-tutorials-page .feature-grid {
    grid-template-columns: minmax(0, 1fr) !important;
  }
}