/* ==========================================
   PART 1: USER MANUAL COMPONENTS
   ========================================== */
.user-manual-padding {
    padding: 16px;
}
.user-manual-main {
    display: block; 
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 40px auto; 
    background-color: #000;
    border: 1px solid #f2f2f2;
    border-radius: 35px;
    padding: 30px;
    color: #fff;
    font-family: sans-serif;
}

.user-manual-title { 
    text-align: center; 
    margin-bottom: 30px; 
    font-size: 2rem; 
}

.user-manual-flex {
    display: flex;
    gap: 20px;
    flex-wrap: wrap; 
}

.user-manual-card {
    flex: 1;
    min-width: 300px; 
    background-color: #f2f2f2;
    border: 3px solid #ffffff;
    border-radius: 25px;
    padding: 20px;
    color: #000;
}

.user-manual-card h2 {
    margin-top: 0;
    border-bottom: 2px solid red;
    padding-bottom: 10px;
    font-family: sans-serif;
}

.user-manual-viewport {
    width: 100%;
    aspect-ratio: 3264 / 3933; 
    max-height: 450px;
    background: #000;
    overflow: hidden;
    position: relative;
    border-radius: 15px;
    cursor: grab;
    touch-action: none; 
    margin-bottom: 15px;
}

.user-manual-img {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    object-fit: contain;
    transform-origin: center;
    pointer-events: none;
}

.user-manual-zoom-box {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ddd;
    padding: 8px 12px;
    border-radius: 10px;
    margin-bottom: 15px;
    font-weight: bold;
    color: #000;
}

.user-manual-steps { 
    padding-left: 20px; 
    color: #333; 
}

.user-manual-steps li { 
    margin-bottom: 8px; 
}

/* ==========================================
   MOBILE OPTIMIZATION ONLY
========================================== */
@media (max-width: 768px) {

    .user-manual-main {
        margin: 16px auto;
        padding: 14px;
        border-radius: 18px;
    }

    .user-manual-title {
        font-size: 1.5rem;
        margin-bottom: 20px;
    }

    .user-manual-flex {
        flex-direction: column;
        gap: 16px;
    }

    .user-manual-card {
        min-width: unset;
        padding: 16px;
        border-radius: 18px;
    }

    .user-manual-card h2 {
        font-size: 1.1rem;
        padding-bottom: 8px;
    }

    .user-manual-viewport {
        max-height: 320px;
        border-radius: 12px;
        margin-bottom: 12px;
        touch-action: pan-x pan-y;
    }

    .user-manual-zoom-box {
        font-size: 0.9rem;
        padding: 10px;
        border-radius: 12px;
        gap: 8px;
    }

    .user-manual-steps {
        padding-left: 18px;
        font-size: 0.95rem;
    }

    .user-manual-steps li {
        margin-bottom: 10px;
        line-height: 1.5;
    }
}

/* ==========================================
   EXTRA SMALL DEVICES
========================================== */
@media (max-width: 400px) {

    .user-manual-main {
        padding: 12px;
        border-radius: 16px;
    }

    .user-manual-title {
        font-size: 1.35rem;
    }

    .user-manual-viewport {
        max-height: 260px;
    }

    .user-manual-card {
        padding: 14px;
    }
}

.view-image-btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #000;
  color: white;
  font-size: 16px;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
}

.view-image-btn:hover {
  background-color: #888888;
}