/**
 * References Grid Page Styles
 * Referanslar sayfası için grid layout
 */

/* References Grid - 4 sütun desktop */
.references-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  justify-items: center;
}

/* Reference Circle - Grid için özel stil */
.references-grid .reference-circle {
  width: 100%;
  aspect-ratio: 1;
  max-width: 320px;
  position: relative;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: box-shadow 0.3s ease;
  box-sizing: border-box;
}

.references-grid .reference-circle:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* Inner Circle - Logo alanı */
.references-grid .reference-circle__inner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 47.5%; /* 152px / 320px = 47.5% */
  height: 47.5%;
  border-radius: 50%;
  background: #fafafa;
  border: 1px solid #eee;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.references-grid .reference-circle__inner img {
  max-width: 75%;
  max-height: 75%;
  width: auto;
  height: auto;
  object-fit: contain;
}

.references-grid .reference-circle__placeholder {
  font-size: 36px;
  font-weight: 700;
  color: #ccc;
  text-transform: uppercase;
}

/* Empty State */
.references-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: #999;
  font-size: 18px;
}

/* Loader */
.references-grid-loader {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 0;
  min-height: 100px;
  height: 100px;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  box-sizing: border-box;
}

.references-grid-loader--hidden {
  opacity: 0;
  visibility: hidden;
  padding: 40px 0;
  min-height: 100px;
  height: 100px;
}

.references-grid-loader img {
  width: 48px;
  height: 48px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Error Message */
.references-error-message {
  grid-column: 1 / -1;
  text-align: center;
  padding: 20px;
  color: #d63638;
  font-size: 16px;
  margin-bottom: 20px;
}

/* Responsive */
/* Tablet (1024px - 1200px) */
@media (max-width: 1200px) {
  .references-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .references-grid .reference-circle {
    max-width: 280px;
  }
}

/* Tablet (768px - 1023px) */
@media (max-width: 1024px) {
  .references-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .references-grid .reference-circle {
    max-width: 240px;
  }

  .references-grid .reference-circle__inner {
    width: 47.5%;
    height: 47.5%;
  }

  .references-grid .reference-circle__placeholder {
    font-size: 28px;
  }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
  .references-grid-section {
    padding: 40px 0;
  }

  .references-grid-section .container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .references-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    justify-items: center;
  }

  .references-grid .reference-circle {
    max-width: 100%;
    width: 100%;
  }

  .references-grid .reference-circle__inner {
    width: 45%;
    height: 45%;
  }

  .references-grid .reference-circle__placeholder {
    font-size: 24px;
  }

  .references-empty {
    padding: 40px 16px;
    font-size: 16px;
  }

  .references-grid-loader {
    padding: 30px 0;
    min-height: 80px;
    height: 80px;
  }

  .references-grid-loader--hidden {
    padding: 30px 0;
    min-height: 80px;
    height: 80px;
  }

  .references-grid-loader img {
    width: 40px;
    height: 40px;
  }
}

/* Small Mobile (max-width: 480px) */
@media (max-width: 480px) {
  .references-grid-section {
    padding: 30px 0;
  }

  .references-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .references-grid .reference-circle {
    max-width: 100%;
    width: 100%;
  }

  .references-grid .reference-circle__inner {
    width: 45%;
    height: 45%;
  }

  .references-grid .reference-circle__placeholder {
    font-size: 20px;
  }

  .references-empty {
    padding: 30px 16px;
    font-size: 14px;
  }
}