.header {
  width: 100%;
  max-width: 1200px;
  height: var(--header-height);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  z-index: 10;
}

.header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.header__logo:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.header__logo-icon {
  display: inline-block;
  font-size: 1.1rem;
  filter: drop-shadow(0 0 8px var(--color-crimson-glow));
  transition: transform var(--transition-normal);
}

.header__logo:hover .header__logo-icon {
  transform: scale(1.15) rotate(-4deg);
}

.header__telegram-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-bg-glass);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition:
    color var(--transition-fast),
    border-color var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.header__telegram-link:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-accent);
  background-color: var(--color-bg-glass-active);
  box-shadow: 0 0 15px var(--color-crimson-glow);
  transform: translateY(-1px);
}

.header__telegram-icon {
  width: 15px;
  height: 15px;
  fill: currentColor;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.header__telegram-link:hover .header__telegram-icon {
  transform: translateX(1px) scale(1.05);
}

@media (max-width: 640px) {
  .header {
    padding: 0 var(--space-md);
  }

  .header__telegram-text {
    display: none;
  }

  .header__telegram-link {
    padding: var(--space-xs);
    border-radius: 50%;
  }
}