/* Общий контейнер объявления */
.ad-container {
  max-width: 900px;
  margin: 40px auto;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  padding: 25px 30px;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
}

/* Заголовок объявления */
.ad-title {
  font-size: 28px;
  font-weight: 700;
  color: #111827;
  margin-bottom: 8px;
}

.ad-author {
  color: #4b5563;
  margin-bottom: 20px;
}

.ad-author a {
  color: #2563eb;
  font-weight: 600;
  text-decoration: none;
}

.ad-author a:hover {
  text-decoration: underline;
}

/* Слайдер */
.slider {
  position: relative;
  width: 100%;
  max-width: 850px;
  height: 480px;
  margin: 0 auto 25px;
  border-radius: 14px;
  overflow: hidden;
  background: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slider img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}

.slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.slide.active {
  opacity: 1;
}

/* Стрелки переключения */
.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  border: none;
  font-size: 22px;
  padding: 10px 14px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s;
  z-index: 2;
}

.slider-btn:hover {
  background: rgba(0, 0, 0, 0.65);
}

.slider-btn.left { left: 12px; }
.slider-btn.right { right: 12px; }

/* Точки-индикаторы */
.slider-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
}

.slider-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.6);
  cursor: pointer;
}

.slider-dots button.active {
  background: #2563eb;
}

/* Секция характеристик */
.ad-details {
  line-height: 1.8;
  color: #374151;
  margin-bottom: 25px;
  font-size: 15px;
}

.ad-details strong {
  color: #111827;
}

/* Описание */
.ad-description {
  background: #f9fafb;
  padding: 18px;
  border-radius: 12px;
  font-size: 15.5px;
  line-height: 1.6;
  color: #1f2937;
  margin-bottom: 25px;
}

.ad-description strong {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
}

/* Кнопка связи */
.contact-button {
  display: inline-block;
  background: #2563eb;
  color: white;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 10px;
  transition: background 0.25s;
}

.contact-button:hover {
  background: #1e40af;
}

/* Заглушка */
.no-photo {
  background: linear-gradient(135deg, #e5e7eb, #f3f4f6);
  color: #9ca3af;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 500;
}

/* Мобильная адаптация */
@media (max-width: 700px) {
  .ad-container {
    padding: 18px;
  }

  .slider {
    height: 300px;
  }

  .ad-title {
    font-size: 22px;
  }
}