.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 56px;
  background: rgba(0,0,0,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--white);
  text-decoration: none;
}

.cart-btn {
  position: relative;
  background: none;
  border: none;
  color: var(--white);
  cursor: pointer;
  padding: 8px;
  display: flex;
  align-items: center;
  transition: opacity 0.2s;
}
.cart-btn:hover { opacity: 0.6; }

.cart-count {
  position: absolute;
  top: 1px;
  right: 1px;
  background: var(--white);
  color: var(--black);
  font-size: 9px;
  font-weight: 800;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.cart-count.visible { transform: scale(1); }