* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: #ffffff;
  color: #111111;
  padding-bottom: 60px;
}

.header {
  padding: 40px 20px 20px 20px;
  text-align: center;
  border-bottom: 1px solid #eeeeee;
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
  z-index: 100;
}

.logo {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.category-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.nav-btn {
  background: none;
  border: 1px solid #ddd;
  padding: 8px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  border-color: #000;
}

.nav-btn.active {
  background-color: #000;
  color: #fff;
  border-color: #000;
}

/* Müzik Butonu Özel Stili */
.music-btn {
  border-color: #ff5500;
  color: #ff5500;
}

.music-btn:hover {
  background-color: #ff5500;
  color: #fff;
}

.music-btn.playing {
  background-color: #ff5500;
  color: #fff;
}

.container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 0 20px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.gallery-item {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.gallery-item.hide {
  display: none;
}

.item-card {
  border: 1px solid #f0f0f0;
  border-radius: 12px;
  overflow: hidden;
  background-color: #fafafa;
}

.item-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  display: block;
}

.item-info {
  padding: 15px;
}

.item-info h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.item-info p {
  font-size: 13px;
  color: #666;
}