{% extends "_base.html" %}
{% load static %}

{% block PAGE_TITLE %}{{ item.s_title }} — hypn0: Галерея Транса{% endblock %}
{% block META_TITLE %}{{ item.s_title }} — Векторный транс #{{ item.s_hash_id }}{% endblock %}
{% block META_DESCRIPTION %}Гипнотическая векторная картина «{{ item.s_title }}» (#{{ item.s_hash_id }}). {{ svg_stats.total_oscillators }} векторных осцилляторов, блокирующих неокортекс.{% endblock %}
{% block OG_TITLE %}{{ item.s_title }} — hypn0{% endblock %}
{% block OG_DESCRIPTION %}Гипнотическая векторная картина «{{ item.s_title }}» (#{{ item.s_hash_id }}). Векторный транс Гипножабы.{% endblock %}
{% block OG_IMAGE %}{% static 'img/og-hypn0-default.png' %}{% endblock %}
{% block TWITTER_IMAGE %}{% static 'img/og-hypn0-default.png' %}{% endblock %}

{% block CONTENT %}
<div class="max-w-5xl mx-auto space-y-8" x-data="{ copiedSvg: false, copiedUrl: false }">

  <!-- Навигационная панель / Хлебные крошки и Переходы -->
  <div class="flex flex-wrap items-center justify-between gap-3">
    <a href="{% url 'hypn0_site:index' %}" class="inline-flex items-center gap-2 text-xs font-bold uppercase tracking-wider text-emerald-600 dark:text-emerald-400 hover:underline border-0">
      <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10 19l-7-7m0 0l7-7m-7 7h18"/>
      </svg>
      <span>К генератору транса</span>
    </a>

    <!-- Кольцевая навигация: Предыдущая / Следующая (нативные ссылки) -->
    <div class="flex items-center gap-2">
      <a href="{{ prev_url }}"
         id="btn-nav-prev"
         title="Предыдущая волна транса [← или A]"
         class="inline-flex items-center gap-1.5 px-3 py-1.5 rounded-xl text-xs font-bold bg-stone-100 hover:bg-stone-200 dark:bg-zinc-800 dark:hover:bg-zinc-700 text-stone-700 dark:text-stone-300 transition-all hover:scale-105 active:scale-95 shadow-sm border border-stone-200 dark:border-zinc-700/60 cursor-pointer">
        <svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"/>
        </svg>
        <span class="hidden sm:inline">Предыдущая</span>
        <span class="text-[10px] opacity-40 font-mono hidden md:inline">[←]</span>
      </a>

      <a href="{{ next_url }}"
         id="btn-nav-next"
         title="Следующая волна транса [→ или D]"
         class="inline-flex items-center gap-1.5 px-3.5 py-1.5 rounded-xl text-xs font-bold bg-purple-600 hover:bg-purple-700 text-white transition-all hover:scale-105 active:scale-95 shadow-md border-0 cursor-pointer">
        <span class="inline">Следующая</span>
        <span class="text-[10px] opacity-60 font-mono hidden md:inline">[→]</span>
        <svg class="w-3.5 h-3.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"/>
        </svg>
      </a>
    </div>

    <div class="flex items-center gap-2">
      <span class="inline-flex items-center px-2.5 py-1 rounded-full text-[11px] font-bold bg-purple-500/10 text-purple-600 dark:text-purple-300 border border-purple-500/20">
        {{ item.get_i_level_display }}
      </span>
      <span class="inline-flex items-center font-mono text-[11px] px-2.5 py-1 rounded-full bg-stone-200/80 dark:bg-stone-800 text-stone-600 dark:text-stone-300">
        #{{ item.s_hash_id }}
      </span>
    </div>
  </div>

  <!-- Главный блок с картиной и действиями -->
  <div class="bg-white/80 dark:bg-zinc-900/80 rounded-3xl border border-stone-200 dark:border-zinc-800 p-4 sm:p-8 shadow-xl backdrop-blur-md space-y-6">

    <!-- Заголовок картины -->
    <div class="flex flex-col sm:flex-row sm:items-center justify-between gap-4 border-b border-stone-200/60 dark:border-zinc-800/80 pb-4">
      <div>
        <h1 class="text-2xl sm:text-3xl font-extrabold text-stone-900 dark:text-stone-100 tracking-tight capitalize">
          {{ item.s_title|safe }}
        </h1>
        <p class="text-xs text-stone-500 dark:text-stone-400 mt-1">
          Зафиксировано в пространстве: <time datetime="{{ item.d_created_at|date:'Y-m-d H:i:s' }}">{{ item.d_created_at|date:'c' }}</time>
        </p>
      </div>

      <div class="flex items-center gap-3">
        {% include "block/vote_button.html" %}
      </div>
    </div>

    <!-- Полноэкранный просмотр SVG с живой анимацией и плавающими стрелками -->
    <div style="{{ item.card_bg_style }}" 
         class="relative w-full aspect-square flex items-center justify-center rounded-2xl overflow-hidden shadow-inner border border-stone-300/80 dark:border-zinc-800/80 group select-none bg-[var(--card-bg-light)] dark:bg-[var(--card-bg-dark)]">
      
      <!-- Плавающая кнопка: Назад -->
      <a href="{{ prev_url }}"
         title="Предыдущая картина [← или A]"
         class="absolute left-3 top-1/2 -translate-y-1/2 w-11 h-11 rounded-full bg-stone-900/70 hover:bg-purple-600 text-white flex items-center justify-center opacity-80 sm:opacity-0 sm:group-hover:opacity-100 transition-all shadow-xl backdrop-blur-md cursor-pointer hover:scale-110 active:scale-90 z-20 border border-solid border-white/10 no-underline">
        <svg class="w-5 h-5 -ml-0.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2.5" d="M15 19l-7-7 7-7"/>
        </svg>
      </a>

      <!-- Плавающая кнопка: Вперед -->
      <a href="{{ next_url }}"
         title="Следующая картина [→ или D]"
         class="absolute right-3 top-1/2 -translate-y-1/2 w-11 h-11 rounded-full bg-stone-900/70 hover:bg-purple-600 text-white flex items-center justify-center opacity-80 sm:opacity-0 sm:group-hover:opacity-100 transition-all shadow-xl backdrop-blur-md cursor-pointer hover:scale-110 active:scale-90 z-20 border border-solid border-white/10 no-underline">
        <svg class="w-5 h-5 ml-0.5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
          <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2.5" d="M9 5l7 7-7 7"/>
        </svg>
      </a>

      <div class="w-full h-full p-2 sm:p-6 flex items-center justify-center hypn0-detail-canvas [&>svg]:w-full [&>svg]:h-full [&>svg]:max-w-full [&>svg]:max-h-full [&>svg]:object-contain">
        <style>
          .hypn0-detail-canvas svg {
            width: 100%;
            height: 100%;
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            display: block;
            --hypn0-play: running !important;
          }
        </style>
        {{ active_svg|safe }}
      </div>

      <!-- Скрытый textarea для копирования SVG -->
      <textarea id="raw-svg-source" class="sr-only" aria-hidden="true">{{ raw_svg }}</textarea>
    </div>

    <!-- Панель быстрых действий -->
    <div class="flex flex-wrap items-center justify-between gap-3 pt-2">
      <div class="flex flex-wrap items-center gap-2.5">
        <!-- Кнопка Копировать SVG -->
        <button type="button"
                @click="navigator.clipboard.writeText(document.getElementById('raw-svg-source').value); copiedSvg = true; setTimeout(() => copiedSvg = false, 2500)"
                class="flex items-center gap-2 px-4 py-2 bg-stone-100 hover:bg-stone-200 dark:bg-zinc-800 dark:hover:bg-zinc-700 text-stone-800 dark:text-stone-200 rounded-xl text-xs font-bold transition-all hover:scale-105 active:scale-95 shadow-sm cursor-pointer">
          <svg x-show="!copiedSvg" class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z"/>
          </svg>
          <svg x-show="copiedSvg" class="w-4 h-4 text-emerald-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"/>
          </svg>
          <span x-text="copiedSvg ? 'SVG скопирован!' : 'Копировать SVG-код'">Копировать SVG-код</span>
        </button>

        <!-- Кнопка Скачать SVG -->
        <a href="{% url 'hypn0_site:gallery_download' item.s_hash_id %}"
           download="hypn0-{{ item.s_hash_id }}.svg"
           class="flex items-center gap-2 px-4 py-2 bg-emerald-600 hover:bg-emerald-700 text-white rounded-xl text-xs font-bold transition-all hover:scale-105 active:scale-95 shadow-md border-0 cursor-pointer">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4"/>
          </svg>
          <span>Скачать .svg</span>
        </a>

        <!-- Кнопка Поделиться -->
        <button type="button"
                @click="if (navigator.share) { navigator.share({ title: '{{ item.s_title|escapejs }}', url: window.location.href }); } else { navigator.clipboard.writeText(window.location.href); copiedUrl = true; setTimeout(() => copiedUrl = false, 2500); }"
                class="flex items-center gap-2 px-4 py-2 bg-stone-100 hover:bg-stone-200 dark:bg-zinc-800 dark:hover:bg-zinc-700 text-stone-800 dark:text-stone-200 rounded-xl text-xs font-bold transition-all hover:scale-105 active:scale-95 shadow-sm cursor-pointer">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8.684 13.342C8.886 12.938 9 12.482 9 12c0-.482-.114-.938-.316-1.342m0 2.684a3 3 0 110-2.684m0 2.684l6.632 3.316m-6.632-6l6.632-3.316m0 0a3 3 0 105.367-2.684 3 3 0 00-5.367 2.684zm0 9.316a3 3 0 105.368 2.684 3 3 0 00-5.368-2.684z"/>
          </svg>
          <span x-text="copiedUrl ? 'Ссылка в буфере!' : 'Поделиться'">Поделиться</span>
        </button>
      </div>

      <!-- Метрики просмотров и объема -->
      <div class="flex items-center gap-3 text-xs text-stone-500 dark:text-stone-400">
        <span title="Число уникальных сеансов транса" class="flex items-center gap-1">
          <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"/>
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"/>
          </svg>
          <span>{{ item.i_views_count }}</span>
        </span>
        <span>•</span>
        <span>{{ svg_stats.total_kb }} КБ</span>
      </div>
    </div>
  </div>

  <!-- БОЛЬШОЙ КУЛЬ НАУКООБРАЗНЫХ ПАРАМЕТРОВ И ТЕЛЕМЕТРИИ ТРАНСА -->
  <div class="space-y-6">
    <div class="flex items-center gap-3">
      <div class="w-3 h-3 rounded-full bg-emerald-500 animate-pulse"></div>
      <h2 class="text-lg font-bold text-stone-900 dark:text-stone-100 uppercase tracking-wider">
        Психо-телеметрия и структура волновой матрицы
      </h2>
    </div>

    <div class="grid grid-cols-1 md:grid-cols-3 gap-6">

      <!-- БЛОК 1: Векторная анатомия -->
      <div class="bg-white/60 dark:bg-zinc-900/60 rounded-2xl border border-stone-200 dark:border-zinc-800 p-5 space-y-4 backdrop-blur-sm">
        <div class="flex items-center justify-between border-b border-stone-200 dark:border-zinc-800 pb-2.5">
          <h3 class="text-xs font-bold uppercase tracking-wider text-emerald-600 dark:text-emerald-400">
            Векторная анатомия
          </h3>
          <span class="text-[10px] font-mono opacity-60">DOM / SVG</span>
        </div>

        <ul class="space-y-2.5 text-xs">
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Осцилляций:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ svg_stats.total_oscillators }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Морфо-примитивов (&lt;defs&gt;):</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ svg_stats.defs_count }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Групп кластеризации (&lt;g&gt;):</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ svg_stats.groups_count }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Частотных классов CSS:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ svg_stats.classes_count }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Гармоник модуляции:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ svg_stats.keyframes_count }} (@keyframes)</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Пространство viewBox:</span>
            <span class="font-mono text-purple-600 dark:text-purple-400">{{ svg_stats.viewbox }} ({{ svg_stats.aspect_ratio }})</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Плотность осцилляторов:</span>
            <span class="font-mono text-stone-900 dark:text-stone-100">{{ svg_stats.density }}&nbsp;μpx²</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Энтропия данных:</span>
            <span class="font-mono text-stone-900 dark:text-stone-100">{{ svg_stats.bytes_per_quantum }} byte/quant</span>
          </li>
        </ul>
      </div>

      <!-- БЛОК 2: Параметры синтеза (Снимок генератора) -->
      <div class="bg-white/60 dark:bg-zinc-900/60 rounded-2xl border border-stone-200 dark:border-zinc-800 p-5 space-y-4 backdrop-blur-sm">
        <div class="flex items-center justify-between border-b border-stone-200 dark:border-zinc-800 pb-2.5">
          <h3 class="text-xs font-bold uppercase tracking-wider text-purple-600 dark:text-purple-400">
            Синтез психо-сетки
          </h3>
          <span class="text-[10px] font-mono opacity-60">j_metadata</span>
        </div>

        <ul class="space-y-2.5 text-xs">
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Глюко-элемент:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.shape|default:'circle' }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Колонки дискретизации:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.cols|default:'35' }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Предельный радиус:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.max_radius|default:'8' }} px</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Период модуляции (Blink):</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.blink|default:'6' }} с</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Фазовый угол поворота:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.rotation|default:'0' }}°</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Угол поляризации:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.angle|default:'0' }}°</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Масштаб амплитуды:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{{ metadata.scale|default:'980' }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Хроматический спектр:</span>
            <span class="flex items-center gap-1.5 font-mono text-stone-900 dark:text-stone-100">
              <span class="w-3.5 h-3.5 rounded-full border border-stone-400/40 shadow-inner" style="background-color: {{ metadata.color|default:'#a855ff' }}"></span>
              <span>{{ metadata.color|default:'#a855ff' }}</span>
            </span>
          </li>
        </ul>
      </div>

      <!-- БЛОК 3: Астральный паспорт и Ноосфера -->
      <div class="bg-white/60 dark:bg-zinc-900/60 rounded-2xl border border-stone-200 dark:border-zinc-800 p-5 space-y-4 backdrop-blur-sm">
        <div class="flex items-center justify-between border-b border-stone-200 dark:border-zinc-800 pb-2.5">
          <h3 class="text-xs font-bold uppercase tracking-wider text-amber-600 dark:text-amber-400">
            Астральный паспорт
          </h3>
          <span class="text-[10px] font-mono opacity-60">Zero-PII</span>
        </div>

        <ul class="space-y-2.5 text-xs">
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">ID-Хэш транса:</span>
            <span class="font-bold text-purple-600 dark:text-purple-400 font-mono">¤{{ item.s_hash_id }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Психо-хэш автора:</span>
            <span class="font-mono text-[11px] text-stone-700 dark:text-stone-300" title="{% if author_fp %}{{ author_fp }}{% endif %}">
              {% if author_fp %}{{ author_fp|slice:":10" }}...{{ author_fp|slice:"-6:" }}{% else %}Анонимная сущность{% endif %}
            </span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Гравитация:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100 font-mono">{% if item.f_score < 0.01  %}N/A{% else %}{{ item.f_score|floatformat:4 }}{%  endif %}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Статус:</span>
            <span class="font-bold text-stone-900 dark:text-stone-100">{{ item.get_i_level_display }}</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Клинч неокортекса:</span>
            <span class="text-emerald-600 dark:text-emerald-400 font-bold font-mono">1/{% widthratio item.i_views_count item.i_likes_count 1 %}&nbsp;ɢLÜCK</span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Трансцендентность:</span>
            <span class="font-mono text-stone-900 dark:text-stone-100 scale-x-[-1]">Ȅ&nbsp;<sup>{% widthratio svg_stats.i_likes_count item.total_bytes 1 %}0</sup>/<sub>{% widthratio svg_stats.total_bytes item.i_likes_count 1 %}</sub></span>
          </li>
          <li class="flex justify-between items-center">
            <span class="text-stone-500 dark:text-stone-400">Мозговые слизни:</span>
            <span class="text-purple-600 dark:text-purple-400 font-bold">v0.1.0</span>
          </li>
        </ul>
      </div>

    </div>

    <!-- БЛОК 4: Матрица бессознательного (Психо-поток хэшей) -->
    <div class="bg-white/60 dark:bg-zinc-900/60 rounded-2xl border border-stone-200 dark:border-zinc-800 p-5 space-y-4 backdrop-blur-sm">
      <div class="flex flex-wrap items-center justify-between gap-2 border-b border-stone-200 dark:border-zinc-800 pb-2.5">
        <div class="flex items-center gap-2">
          <h3 class="text-xs font-bold uppercase tracking-wider text-emerald-600 dark:text-emerald-400">
            Матрица бессознательного
          </h3>
          <span class="text-[10px] font-mono px-2 py-0.5 rounded bg-stone-200/60 dark:bg-zinc-800 text-stone-600 dark:text-stone-300">
            {{ matrix_items|length }} узлов
          </span>
        </div>
        <span class="text-[10px] font-mono opacity-50 text-stone-500 dark:text-stone-400">seed: {{ seed }}</span>
      </div>

      <!-- Сетка ячеек-хэшей -->
      <div class="flex flex-wrap gap-1.5 sm:gap-2 max-h-72 overflow-y-auto p-1 font-mono text-[11px] leading-tight select-none">
        {% for node in matrix_items %}
          {% if node.is_current %}
            <span class="px-2.5 py-1 rounded-md bg-stone-100 dark:bg-zinc-800 font-bold text-stone-900 dark:text-stone-100 border-2 border-purple-500/80 shadow-sm cursor-default" title="Текущий транс: #{{ node.s_hash_id }}">
              #{{ node.s_hash_id }}
            </span>
          {% else %}
            <a href="{{ node.url }}"
               class="px-2.5 py-1 rounded-md bg-stone-100 hover:bg-stone-200 dark:bg-zinc-800/80 dark:hover:bg-zinc-700 text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-stone-200 border border-stone-200 dark:border-zinc-700/60 transition-colors">
              #{{ node.s_hash_id }}
            </a>
          {% endif %}
        {% endfor %}
      </div>
    </div>
  </div>

</div>

<!-- Навигация с клавиатуры [←]/[A] и [→]/[D] -->
<script>
  window.addEventListener('keydown', function(e) {
    if (e.target && e.target.matches && e.target.matches('input, textarea, select')) return;
    if (e.key === 'ArrowLeft' || e.key === 'a' || e.key === 'A' || e.key === 'ф' || e.key === 'Ф') {
      var prevBtn = document.getElementById('btn-nav-prev');
      if (prevBtn && prevBtn.href) {
        window.location.href = prevBtn.href;
      }
    } else if (e.key === 'ArrowRight' || e.key === 'd' || e.key === 'D' || e.key === 'в' || e.key === 'В') {
      var nextBtn = document.getElementById('btn-nav-next');
      if (nextBtn && nextBtn.href) {
        window.location.href = nextBtn.href;
      }
    }
  });
</script>
{% endblock CONTENT %}