/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-header-footer);
  height: var(--header-height);
  display: flex;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header-logo img {
  height: 36px;
  width: auto;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header-nav-link {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: color var(--transition-fast), border-bottom var(--transition-fast);
  border-bottom: 2px solid transparent;
}

.header-nav-link:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-header-signup {
  background-color: var(--color-accent);
  color: var(--color-header-footer);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  white-space: nowrap;
  transition: all var(--transition-base);
  box-shadow: 0 2px 8px rgba(254, 184, 7, 0.3);
}

.btn-header-signup:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(254, 184, 7, 0.4);
  color: var(--color-header-footer);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile overlay */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.mobile-overlay.active {
  opacity: 1;
}

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

  .header-nav {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-header-footer);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-xl);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    gap: var(--spacing-md);
  }

  .header-nav.open {
    right: 0;
  }

  .header-nav-list {
    flex-direction: column;
    gap: 0;
  }

  .header-nav-list li {
    width: 100%;
  }

  .header-nav-link {
    display: block;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-base);
  }

  .header-actions {
    flex-direction: column;
    margin-top: var(--spacing-md);
    gap: var(--spacing-sm);
  }

  .btn-header-signup {
    width: 100%;
    text-align: center;
  }

  .mobile-overlay {
    display: block;
  }
}