@page "/gallery"
@model DrSousan.Api.Pages.GalleryModel
@{
    var galBase = Environment.GetEnvironmentVariable("SITE_BASE_URL")?.TrimEnd('/') ?? (Request.Scheme + "://" + Request.Host);
    var galUrl  = galBase + "/gallery";
    var galDesc = "گالری نتایج واقعی قبل و بعد درمان‌های زیبایی پوست دکتر سوسن آل‌طه — بوتاکس، فیلر، لیزر، مزوتراپی و پاکسازی پوست.";
    var firstImg = Model.Items
        .Select(i => !string.IsNullOrEmpty(i.BeforeImageUrl) ? i.BeforeImageUrl : i.ImageUrl)
        .FirstOrDefault(u => !string.IsNullOrEmpty(u)) ?? "";
    var absFirstImg = string.IsNullOrEmpty(firstImg) ? "" : (firstImg.StartsWith("http") ? firstImg : galBase + firstImg);
}

@section Head {
    <title>@ViewData["Title"]</title>
    <meta name="description" content="@galDesc" />
    <meta name="robots" content="index, follow, max-image-preview:large, max-snippet:-1" />
    <meta name="author" content="@ViewData["SiteName"]" />
    <meta name="theme-color" content="#B8955A" />
    <link rel="canonical" href="@galUrl" />

    <!-- Open Graph -->
    <meta property="og:type"        content="website" />
    <meta property="og:site_name"   content="@ViewData["SiteName"]" />
    <meta property="og:title"       content="@ViewData["Title"]" />
    <meta property="og:description" content="@galDesc" />
    <meta property="og:url"         content="@galUrl" />
    <meta property="og:locale"      content="fa_IR" />
    @if (!string.IsNullOrEmpty(absFirstImg)) {
        <meta property="og:image" content="@absFirstImg" />
    }
    <!-- Twitter -->
    <meta name="twitter:card"        content="@(string.IsNullOrEmpty(absFirstImg) ? "summary" : "summary_large_image")" />
    <meta name="twitter:title"       content="@ViewData["Title"]" />
    <meta name="twitter:description" content="@galDesc" />
    @if (!string.IsNullOrEmpty(absFirstImg)) {
        <meta name="twitter:image" content="@absFirstImg" />
    }

    <!-- Structured data: ImageGallery + breadcrumb -->
    <script type="application/ld+json">
    {
      "@@context": "https://schema.org",
      "@@type": "ImageGallery",
      "name": "@ViewData["Title"]",
      "description": "@galDesc",
      "url": "@galUrl",
      "inLanguage": "fa-IR"
    }
    </script>
    <script type="application/ld+json">
    {
      "@@context": "https://schema.org",
      "@@type": "BreadcrumbList",
      "itemListElement": [
        { "@@type": "ListItem", "position": 1, "name": "خانه", "item": "@galBase/" },
        { "@@type": "ListItem", "position": 2, "name": "گالری", "item": "@galUrl" }
      ]
    }
    </script>
    <style>
      .gal-hero{background:linear-gradient(135deg,var(--gold-pale) 0%,#EDE0CA 100%);padding:6rem 2rem 3rem;text-align:center}
      .gal-hero h1{font-size:clamp(1.8rem,4vw,2.5rem);font-weight:700;color:var(--dark);margin-bottom:.6rem}
      .gal-hero p{font-size:1rem;color:var(--mid);max-width:560px;margin:0 auto}
      .gal-tabs{display:flex;gap:.6rem;justify-content:center;flex-wrap:wrap;max-width:1100px;margin:2rem auto 0;padding:0 2rem}
      .gal-tab{background:transparent;border:1.5px solid var(--border);color:var(--mid);padding:.45rem 1.2rem;border-radius:50px;font-family:'Vazirmatn',sans-serif;font-size:.85rem;cursor:pointer;transition:all .2s}
      .gal-tab.active,.gal-tab:hover{background:var(--gold);border-color:var(--gold);color:#fff}
      .gal-grid{max-width:1100px;margin:2.5rem auto;padding:0 2rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
      @@media(max-width:900px){.gal-grid{grid-template-columns:repeat(2,1fr)}}
      @@media(max-width:600px){.gal-grid{grid-template-columns:repeat(2,1fr);gap:.8rem}}
      @@media(max-width:380px){.gal-grid{grid-template-columns:1fr}}
      .gal-item{border-radius:16px;overflow:hidden;background:var(--white);border:1px solid var(--border);display:flex;flex-direction:column}
      .gal-imgwrap{aspect-ratio:4/3;position:relative;overflow:hidden;background:linear-gradient(135deg,var(--gold-pale),#EDE0CA)}
      .gal-imgwrap img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
      .gal-item:hover .gal-imgwrap img{transform:scale(1.05)}
      .gal-ba{display:flex;flex-direction:row;height:100%}
      .gal-ba .half{flex:1;position:relative;overflow:hidden}
      .gal-ba .divider{width:2px;background:var(--border);flex-shrink:0}
      .gal-labels{display:flex}
      .gal-labels span{flex:1;text-align:center;padding:6px 8px;font-size:.78rem;font-weight:600;color:var(--mid);border-top:1px solid var(--border)}
      .gal-labels span:first-child{border-left:1px solid var(--border)}
      .gal-caption{padding:.55rem .8rem;font-size:.8rem;color:var(--mid);text-align:center;border-top:1px solid var(--border);line-height:1.5}
      .gal-empty{text-align:center;padding:4rem 2rem;color:var(--light)}
      .gal-back{text-align:center;padding:1rem 2rem 4rem}
    </style>
}

<div class="gal-hero">
  <h1>گالری نتایج قبل و بعد</h1>
  <p>نمونه‌ای از نتایج واقعی درمان‌های انجام‌شده توسط دکتر سوسن آل‌طه. روی هر تصویر، قبل و بعد درمان قابل مشاهده است.</p>
</div>

@if (Model.Categories.Any())
{
    <div class="gal-tabs">
      <button class="gal-tab active" data-filter="">همه</button>
      @foreach (var cat in Model.Categories)
      {
          <button class="gal-tab" data-filter="@cat">@cat</button>
      }
    </div>
}

<div class="gal-grid" id="galGrid">
  @if (!Model.Items.Any())
  {
      <div class="gal-empty" style="grid-column:1/-1"><p>هنوز نمونه‌ای ثبت نشده است.</p></div>
  }
  else
  {
      @foreach (var item in Model.Items)
      {
          var hasBoth = !string.IsNullOrEmpty(item.BeforeImageUrl) && !string.IsNullOrEmpty(item.AfterImageUrl);
          var hasImg  = !string.IsNullOrEmpty(item.ImageUrl);
          <div class="gal-item" data-cat="@item.Category">
            <div class="gal-imgwrap">
              @if (hasBoth)
              {
                  <div class="gal-ba">
                    <div class="half"><img src="@item.BeforeImageUrl" alt="قبل از درمان @item.Caption" loading="lazy"/></div>
                    <div class="divider"></div>
                    <div class="half"><img src="@item.AfterImageUrl" alt="بعد از درمان @item.Caption" loading="lazy"/></div>
                  </div>
              }
              else if (hasImg)
              {
                  <img src="@item.ImageUrl" alt="@item.Caption" loading="lazy"/>
              }
            </div>
            @if (hasBoth)
            {
                <div class="gal-labels"><span>قبل از درمان</span><span>بعد از درمان</span></div>
            }
            @if (!string.IsNullOrEmpty(item.Caption)) { <div class="gal-caption">@item.Caption</div> }
          </div>
      }
  }
</div>

<div class="gal-back">
  <a href="/#contact" class="btn-primary">رزرو نوبت و مشاوره</a>
</div>

@section Scripts {
<script>
  document.querySelectorAll('.gal-tab').forEach(btn => {
    btn.addEventListener('click', () => {
      document.querySelectorAll('.gal-tab').forEach(b => b.classList.remove('active'));
      btn.classList.add('active');
      const f = btn.dataset.filter || '';
      document.querySelectorAll('#galGrid .gal-item').forEach(item => {
        const match = f === '' || (item.dataset.cat || '') === f;
        item.style.display = match ? '' : 'none';
      });
    });
  });
</script>
}