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

{% block title %}Administración de Grupos - Plataforma Educativa{% endblock %}

{% block content %}
<style>
  .admin-header {
    background: linear-gradient(135deg, #7a0f0f, #650d0d);
    color: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .admin-header h1 {
    margin: 0;
    font-size: 2rem;
    font-weight: 800;
  }

  .btn-create {
    background: #fff;
    color: #7a0f0f;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .btn-create:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  }

  .groups-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .group-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 5px solid #7a0f0f;
  }

  .group-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
  }

  .group-header {
    background: linear-gradient(135deg, rgba(122,15,15,0.1), rgba(122,15,15,0.05));
    padding: 1.5rem;
    border-bottom: 1px solid #f5f2f0;
  }

  .group-header h3 {
    margin: 0 0 0.5rem 0;
    color: #7a0f0f;
    font-size: 1.2rem;
    font-weight: 800;
    word-break: break-word;
  }

  .group-description {
    color: #666;
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .group-body {
    padding: 1.5rem;
    flex: 1;
  }

  .group-stat {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #f5f2f0;
  }

  .group-stat:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
  }

  .stat-icon {
    width: 40px;
    height: 40px;
    background: #f5f2f0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-right: 1rem;
  }

  .stat-content h4 {
    margin: 0;
    color: #222;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #7a0f0f;
  }

  .stat-content p {
    margin: 0.3rem 0 0 0;
    color: #222;
    font-size: 1.1rem;
    font-weight: 700;
  }

  .code-box {
    background: linear-gradient(135deg, #7a0f0f, #650d0d);
    color: #fff;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0 0 0;
    text-align: center;
  }

  .code-box small {
    display: block;
    opacity: 0.9;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
  }

  .code-display {
    font-family: 'Courier New', monospace;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
    word-break: break-all;
  }

  .group-footer {
    padding: 1.5rem;
    border-top: 1px solid #f5f2f0;
    background: #fafafa;
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
  }

  .btn-small {
    flex: 1;
    min-width: 120px;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    transition: all 0.2s;
    text-align: center;
  }

  .btn-view {
    background: #7a0f0f;
    color: #fff;
  }

  .btn-view:hover {
    background: #650d0d;
    transform: translateY(-2px);
  }

  .btn-edit {
    background: #f1d8a7;
    color: #7a0f0f;
  }

  .btn-edit:hover {
    background: #e5c99b;
    transform: translateY(-2px);
  }

  .btn-delete {
    background: #ffebee;
    color: #d32f2f;
  }

  .btn-delete:hover {
    background: #ffcdd2;
    transform: translateY(-2px);
  }

  .empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  }

  .empty-state h2 {
    color: #7a0f0f;
    margin-bottom: 1rem;
    font-size: 1.8rem;
  }

  .empty-state p {
    color: #666;
    margin-bottom: 2rem;
    font-size: 1.05rem;
  }

  .empty-state .btn-create {
    margin: 0 auto;
  }

  .status-active {
    display: inline-block;
    background: #c8e6c9;
    color: #2e7d32;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
  }

  .status-inactive {
    display: inline-block;
    background: #ffcccc;
    color: #c62828;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
  }

  @media (max-width: 768px) {
    .admin-header {
      flex-direction: column;
      align-items: flex-start;
    }

    .groups-container {
      grid-template-columns: 1fr;
    }

    .group-footer {
      flex-direction: column;
    }

    .btn-small {
      width: 100%;
    }
  }
</style>

<div class="admin-header">
  <div>
    <h1>📊 Administración de Grupos</h1>
    <p style="margin: 0.5rem 0 0 0; opacity: 0.95;">Gestiona todos tus grupos y estudiantes</p>
  </div>
  <a href="{% url 'projects:group_create' %}" class="btn-create">
    ➕ Crear Nuevo Grupo
  </a>
</div>

{% if groups %}
  <div class="groups-container">
    {% for group in groups %}
      <div class="group-card">
        <div class="group-header">
          <h3>{{ group.name }}</h3>
          {% if group.description %}
            <p class="group-description">{{ group.description }}</p>
          {% endif %}
        </div>

        <div class="group-body">
          <div class="group-stat">
            <div class="stat-icon">👥</div>
            <div class="stat-content">
              <h4>Miembros</h4>
              <p>{{ group.get_members_count }}</p>
            </div>
          </div>

          <div class="group-stat">
            <div class="stat-icon">📅</div>
            <div class="stat-content">
              <h4>Creado</h4>
              <p>{{ group.created_at|date:"d/m/Y" }}</p>
            </div>
          </div>

          <div class="group-stat">
            <div class="stat-icon">✅</div>
            <div class="stat-content">
              <h4>Estado</h4>
              <p>
                {% if group.is_active %}
                  <span class="status-active">● Activo</span>
                {% else %}
                  <span class="status-inactive">● Inactivo</span>
                {% endif %}
              </p>
            </div>
          </div>

          {% if group.access_code %}
            <div class="code-box">
              <small>🔑 Código de Acceso</small>
              <div class="code-display">{{ group.access_code.code }}</div>
            </div>
          {% endif %}
        </div>

        <div class="group-footer">
          <a href="{% url 'projects:group_detail' group.pk %}" class="btn-small btn-view">
            👁️ Ver
          </a>
          <a href="{% url 'projects:group_edit' group.pk %}" class="btn-small btn-edit">
            ✏️ Editar
          </a>
          <a href="{% url 'projects:group_delete' group.pk %}" class="btn-small btn-delete">
            🗑️ Eliminar
          </a>
        </div>
      </div>
    {% endfor %}
  </div>

{% else %}
  <div class="empty-state">
    <h2>📭 No tienes grupos aún</h2>
    <p>¡Crea tu primer grupo para comenzar a organizar a tus estudiantes!</p>
    <a href="{% url 'projects:group_create' %}" class="btn-create">
      ➕ Crear Primer Grupo
    </a>
  </div>
{% endif %}

{% endblock %}