/* Referanslar Bölümü Stilleri */
.referanslar-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-family: 'Poppins', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: #00529b;
  margin-bottom: 15px;
}

.section-header p {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.1rem;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
}

/* Referanslar Grid */
.referanslar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 30px;
}

/* Referans Kartları */
.referans-kart {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transition: all 0.4s ease;
  position: relative;
}

.referans-kart:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.referans-gorsel {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
}

.referans-gorsel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.referans-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 82, 155, 0.1) 100%
  );
  transition: background 0.4s ease;
}

.referans-kart:hover .referans-gorsel img {
  transform: scale(1.05);
}

.referans-kart:hover .referans-overlay {
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(0, 82, 155, 0.3) 100%
  );
}

.referans-icerik {
  padding: 25px;
  position: relative;
}

.referans-kategori {
  display: inline-block;
  background: linear-gradient(135deg, #00529b, #003466);
  color: white;
  padding: 6px 15px;
  border-radius: 20px;
  font-family: 'Poppins', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 15px;
}

.referans-proje {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 8px;
  line-height: 1.3;
}

.referans-firma {
  font-family: 'Poppins', sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  color: #00529b;
  margin-bottom: 12px;
}

.referans-aciklama {
  font-family: 'Open Sans', sans-serif;
  font-size: 0.95rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
}

.referans-detaylar {
  display: flex;
  gap: 20px;
  border-top: 1px solid #eee;
  padding-top: 20px;
}

.detay-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Open Sans', sans-serif;
  font-size: 0.9rem;
  color: #666;
}

.detay-item i {
  color: #00529b;
  font-size: 1rem;
}

/* Responsive Tasarım */
@media (max-width: 1200px) {
  .referanslar-grid {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  }
}

@media (max-width: 768px) {
  .referanslar-section {
    padding: 60px 0;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .section-header p {
    font-size: 1rem;
  }
  
  .referanslar-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .referans-gorsel {
    height: 220px;
  }
  
  .referans-icerik {
    padding: 20px;
  }
  
  .referans-proje {
    font-size: 1.2rem;
  }
  
  .referans-firma {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .referanslar-section {
    padding: 40px 0;
  }
  
  .section-header {
    margin-bottom: 40px;
  }
  
  .section-header h2 {
    font-size: 1.8rem;
  }
  
  .referans-gorsel {
    height: 200px;
  }
  
  .referans-icerik {
    padding: 15px;
  }
  
  .referans-proje {
    font-size: 1.1rem;
  }
  
  .referans-detaylar {
    flex-direction: column;
    gap: 10px;
  }
  
  .detay-item {
    justify-content: flex-start;
  }
}

/* Resim Yükleme Fallback */
.referans-gorsel img[src=""],
.referans-gorsel img:not([src]) {
  background: linear-gradient(135deg, #00529b, #003466);
  display: flex;
  align-items: center;
  justify-content: center;
}

.referans-gorsel img[src=""]::after,
.referans-gorsel img:not([src])::after {
  content: "Resim Yüklenemedi";
  color: white;
  font-family: 'Open Sans', sans-serif;
  font-size: 1rem;
  text-align: center;
}