<section class="heading-page header-text" id="top" style="width: 100%;  height: auto;">
        <div class="container">
            <div class="row">
                <div class="col-lg-12">
                <h6> <br></h6>
                <h2> <br></h2>
                </div>
            </div>
        </div>
    </section>

<style>
/* ==============================
   Administrative Page Responsive
   ใช้ id #meetings เพื่อไม่ให้ CSS กระทบ template ส่วนอื่น
================================= */

#meetings .meeting-item .thumb img {
    border-radius: 20px;
}

/* รูปหลักเดิม */
#meetings .main-admin-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
}

/* ส่วนรูปภาพเพิ่มเติม */
#meetings .additional-gallery {
    margin-top: 35px;
}

#meetings .gallery-title {
    text-align: center;
    margin-bottom: 25px;
}

#meetings .gallery-title h4 {
    font-size: 24px;
    font-weight: 700;
    color: #1f272b;
    margin-bottom: 8px;
}

#meetings .gallery-title p {
    font-size: 15px;
    color: #666;
    margin-bottom: 0;
}

#meetings .gallery-card {
    background: #ffffff;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    height: 100%;
}

#meetings .gallery-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.14);
}

#meetings .gallery-img-wrap {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #f5f5f5;
}

#meetings .gallery-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0;
    transition: transform 0.4s ease;
}

#meetings .gallery-card:hover .gallery-img-wrap img {
    transform: scale(1.05);
}

#meetings .gallery-zoom-btn {
    width: 100%;
    border: 0;
    padding: 0;
    background: transparent;
    cursor: zoom-in;
    display: block;
}

#meetings .gallery-zoom-btn:focus {
    outline: 3px solid rgba(6, 199, 85, 0.35);
    outline-offset: 3px;
}

#meetings .gallery-img-wrap {
    position: relative;
}

#meetings .gallery-img-wrap::after {
    content: "คลิกเพื่อขยาย";
    position: absolute;
    left: 50%;
    bottom: 12px;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.65);
    color: #ffffff;
    font-size: 13px;
    padding: 6px 12px;
    border-radius: 999px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}

#meetings .gallery-card:hover .gallery-img-wrap::after {
    opacity: 1;
}

/* Lightbox แสดงรูปใหญ่ ไม่พึ่ง Bootstrap JS เพื่อกัน template พัง */
.gallery-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0, 0, 0, 0.82);
}

.gallery-lightbox.active {
    display: flex;
}

.gallery-lightbox-content {
    position: relative;
    width: min(100%, 980px);
    max-height: 90vh;
    background: #ffffff;
    border-radius: 18px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.gallery-lightbox-img {
    width: 100%;
    max-height: 78vh;
    object-fit: contain;
    display: block;
    border-radius: 12px;
}

.gallery-lightbox-caption {
    margin: 10px 8px 4px;
    font-size: 15px;
    font-weight: 600;
    color: #1f272b;
    text-align: center;
}

.gallery-lightbox-close {
    position: absolute;
    top: -14px;
    right: -14px;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    background: #ffffff;
    color: #1f272b;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.gallery-lightbox-close:hover {
    background: #f2f2f2;
}

#meetings .gallery-content {
    padding: 18px 18px 20px;
    text-align: center;
}

#meetings .gallery-content h5 {
    font-size: 18px;
    font-weight: 700;
    color: #1f272b;
    margin-bottom: 8px;
}

#meetings .gallery-content p {
    font-size: 14px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 0;
}

/* Tablet */
@media (max-width: 991.98px) {
    #meetings .additional-gallery {
        margin-top: 30px;
    }

    #meetings .gallery-title h4 {
        font-size: 22px;
    }

    #meetings .gallery-card {
        margin-bottom: 20px;
    }
}

/* Mobile แนวตั้ง */
@media (max-width: 575.98px) {
    #meetings .additional-gallery {
        margin-top: 25px;
    }

    #meetings .gallery-title {
        margin-bottom: 18px;
        padding: 0 10px;
    }

    #meetings .gallery-title h4 {
        font-size: 20px;
    }

    #meetings .gallery-title p {
        font-size: 14px;
    }

    #meetings .gallery-content {
        padding: 15px;
    }

    #meetings .gallery-content h5 {
        font-size: 17px;
    }

    #meetings .gallery-content p {
        font-size: 13px;
    }

    #meetings .gallery-img-wrap::after {
        opacity: 1;
        font-size: 12px;
        bottom: 10px;
    }

    .gallery-lightbox {
        padding: 12px;
    }

    .gallery-lightbox-content {
        border-radius: 14px;
        padding: 8px;
    }

    .gallery-lightbox-img {
        max-height: 75vh;
    }

    .gallery-lightbox-close {
        top: 8px;
        right: 8px;
        width: 38px;
        height: 38px;
        font-size: 26px;
    }
}
</style>

  <section class="meetings-page" id="meetings">
    <div class="container">
      <div class="row">
        <div class="col-lg-12">
          <div class="row">

            <div class="col-lg-12">
              <div class="row grid justify-content-center">
                <!-- ***** News Area Start ***** -->
                <div class="col-lg-12 all">
                  <div class="meeting-item">
                    <div class="thumb">
                        <img src="../assets/department/administrative.gif" class="main-admin-image" alt="งานบริหารทั่วไป">
                    </div>
                  </div>
                </div>
                <!-- ***** News Area End ***** -->
              </div>
            </div>

            <!-- ***** Additional Image Gallery Start ***** -->
            <div class="col-lg-12">
              <div class="additional-gallery">
                <div class="gallery-title">
                  <h4>แผนผังโครงสร้าง</h4>
                </div>

                <div class="row justify-content-center">

                  <!-- Image 1 -->
                  <div class="col-lg-4 col-md-6 col-sm-12 mb-4">
                    <div class="gallery-card">
                      <div class="gallery-img-wrap">
                        <button type="button" class="gallery-zoom-btn" data-gallery-src="../assets/department/administrative-1.png" data-gallery-title="แผนภูมิการบริหารสถานศึกษา" aria-label="ขยายแผนภูมิการบริหารสถานศึกษา">
                          <img src="../assets/department/administrative-1.png" alt="แผนภูมิการบริหารสถานศึกษา">
                        </button>
                      </div>
                      <div class="gallery-content">
                        <h5>แผนภูมิการบริหารสถานศึกษา</h5>
                        <p>รายละเอียดของแผนภูมิการบริหารสถานศึกษา</p>
                      </div>
                    </div>
                  </div>

                  <!-- Image 2 -->
                  <div class="col-lg-4 col-md-6 col-sm-12 mb-4">
                    <div class="gallery-card">
                      <div class="gallery-img-wrap">
                        <button type="button" class="gallery-zoom-btn" data-gallery-src="../assets/department/administrative-2.png" data-gallery-title="แผนกวิชา" aria-label="ขยายแผนกวิชา">
                          <img src="../assets/department/administrative-2.png" alt="แผนกวิชา">
                        </button>
                      </div>
                      <div class="gallery-content">
                        <h5>แผนกวิชา</h5>
                        <p>รายละเอียดของแผนกวิชา</p>
                      </div>
                    </div>
                  </div>

                  <!-- Image 3 -->
                  <div class="col-lg-4 col-md-6 col-sm-12 mb-4">
                    <div class="gallery-card">
                      <div class="gallery-img-wrap">
                        <button type="button" class="gallery-zoom-btn" data-gallery-src="../assets/department/administrative-3.png" data-gallery-title="แผนกวิชาอุตสาหกรรม" aria-label="ขยายแผนกวิชาอุตสาหกรรม">
                          <img src="../assets/department/administrative-3.png" alt="แผนกวิชาอุตสาหกรรม">
                        </button>
                      </div>
                      <div class="gallery-content">
                        <h5>แผนกวิชาอุตสาหกรรม</h5>
                        <p>รายละเอียดของแผนกวิชาอุตสาหกรรม</p>
                      </div>
                    </div>
                  </div>

                </div>
              </div>
            </div>
            <!-- ***** Additional Image Gallery End ***** -->

          </div>
        </div>
      </div>
    </div>
  </section>

<!-- ***** Gallery Lightbox Start ***** -->
<div class="gallery-lightbox" id="galleryLightbox" aria-hidden="true">
  <div class="gallery-lightbox-content">
    <button type="button" class="gallery-lightbox-close" id="galleryLightboxClose" aria-label="ปิดรูปภาพ">&times;</button>
    <img src="" alt="" class="gallery-lightbox-img" id="galleryLightboxImg">
    <div class="gallery-lightbox-caption" id="galleryLightboxCaption"></div>
  </div>
</div>
<!-- ***** Gallery Lightbox End ***** -->

<script>
document.addEventListener('DOMContentLoaded', function () {
  var lightbox = document.getElementById('galleryLightbox');
  var lightboxImg = document.getElementById('galleryLightboxImg');
  var lightboxCaption = document.getElementById('galleryLightboxCaption');
  var closeBtn = document.getElementById('galleryLightboxClose');
  var zoomButtons = document.querySelectorAll('#meetings .gallery-zoom-btn');

  function openLightbox(src, title) {
    lightboxImg.src = src;
    lightboxImg.alt = title;
    lightboxCaption.textContent = title;
    lightbox.classList.add('active');
    lightbox.setAttribute('aria-hidden', 'false');
    document.body.style.overflow = 'hidden';
  }

  function closeLightbox() {
    lightbox.classList.remove('active');
    lightbox.setAttribute('aria-hidden', 'true');
    lightboxImg.src = '';
    document.body.style.overflow = '';
  }

  zoomButtons.forEach(function (button) {
    button.addEventListener('click', function () {
      openLightbox(button.getAttribute('data-gallery-src'), button.getAttribute('data-gallery-title'));
    });
  });

  closeBtn.addEventListener('click', closeLightbox);

  lightbox.addEventListener('click', function (event) {
    if (event.target === lightbox) {
      closeLightbox();
    }
  });

  document.addEventListener('keydown', function (event) {
    if (event.key === 'Escape' && lightbox.classList.contains('active')) {
      closeLightbox();
    }
  });
});
</script>