/* Общие настройки */
body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background-color: #000;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
  background-image: url("img/back.png");
  background-repeat: repeat;
  background-size: 420px auto;
}

/* Карточка */
#card {
  background: #1e1e1e;
  border-radius: 22px;
  padding: 40px 30px;
  text-align: center;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.6);
  width: 340px;
}

/* Фото */
#photo img {
  width: 122px;
  height: 122px;
  border-radius: 50%;
  margin-bottom: 15px;
  object-fit: cover;
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
}

/* Название */
#channel_name {
  font-size: 21px;
  font-weight: 600;
  margin-bottom: 8px;
}

/* Подписчики */
#subscribers {
  color: #aaa;
  font-size: 14px;
  margin-bottom: 20px;
}

/* Описание */
#channel_description {
  font-size: 15px;
  line-height: 1.6em;
  color: #ddd;
  margin-bottom: 25px;
}

/* Кнопка */
#button_join {
  display: inline-block;
  background-color: #0088cc;
  color: #fff;
  text-decoration: none;
  padding: 12px 30px;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 0 15px rgba(0, 136, 204, 0.6);
}

#button_join:hover {
  background-color: #0099dd;
  box-shadow: 0 0 20px rgba(0, 136, 204, 0.9);
}

/* Адаптив */
@media (max-width: 400px) {
  #card {
    width: 90%;
    padding: 30px 20px;
  }

  #channel_description {
    font-size: 14px;
  }
}