/* Header Styles */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: var(--shadow-accent);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

/* Logo */
.logo-section {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  transition: opacity var(--transition-fast);
}

.logo-section:hover {
  opacity: 0.8;
}

.logo {
  height: 2.5rem;
  width: auto;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--foreground);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-fast);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--foreground);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--card);
  border-top: 1px solid var(--border);
}

.mobile-menu.visible {
  display: flex;
}

.mobile-nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--foreground);
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--primary);
}

.w-100 {
  width: 100%;
}

/* Responsive */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    display: none;
  }
}