/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  z-index: 1000;
  transition: all 0.3s ease;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.logo-image {
  width: 76px;
  height: 76px;
  object-fit: contain;
}

.logo-text {
  font-size: 26px;
  font-weight: 600;
  color: #1d1d1f;
  padding-left: 8px;
  letter-spacing: -0.02em;
}

.navigation {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 32px;
  margin: 0;
  padding: 0;
}

.nav-link {
  text-decoration: none;
  color: #515154;
  font-size: 16px;
  font-weight: 400;
  transition: color 0.2s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: #1d1d1f;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #34c759, #30d158);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    height: auto;
    padding: 16px 0;
    gap: 16px;
  }

  .nav-list {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 16px;
  }

  .nav-list {
    gap: 12px;
  }

  .nav-link {
    font-size: 14px;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  .header {
    background: rgba(28, 28, 30, 0.8);
    border-bottom-color: rgba(255, 255, 255, 0.08);
  }

  .logo-text {
    color: #f2f2f7;
  }

  .nav-link {
    color: #98989d;
  }

  .nav-link:hover,
  .nav-link.active {
    color: #f2f2f7;
  }
}