/* ============================================
   Navigation & Header Styles
   ============================================ */

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: transform var(--transition-normal);
}

.header.hidden {
  transform: translateY(-100%);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  z-index: 1001;
}

.logo img {
  height: 50px;
  width: auto;
  transition: transform var(--transition-fast);
}

.logo:hover img {
  transform: scale(1.05);
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.nav-link.active {
  color: var(--color-text-secondary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background-color: var(--color-text-secondary);
}

/* Book Button in Nav */
.nav-cta {
  padding: 0.75rem 1.5rem;
  background-color: var(--color-text-secondary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: all var(--transition-normal);
}

.nav-cta:hover {
  background-color: #d67e62;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-white);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  position: relative;
}

.menu-toggle:focus {
  outline: 2px solid var(--color-text-secondary);
  outline-offset: 2px;
}

.menu-toggle span {
  width: 28px;
  height: 3px;
  background-color: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
  transform-origin: center;
  margin: 0 auto;
}

/* Hamburger Animation */
.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Navigation Overlay */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

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

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 350px;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    padding: 5rem var(--spacing-md) var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
    overflow-y: auto;
    z-index: 1000;
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  }

  .nav-link {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
    justify-content: flex-start;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-cta {
    width: 100%;
    text-align: center;
    margin-top: var(--spacing-md);
  }

  .logo img {
    height: 40px;
  }

  .header-container {
    padding: 0.75rem var(--spacing-sm);
  }
}

@media (max-width: 480px) {
  .nav {
    width: 90%;
  }

  .logo img {
    height: 35px;
  }
}

/* Tablet Adjustments */
@media (min-width: 769px) and (max-width: 1024px) {
  .nav-list {
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }

  .nav-cta {
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
  }
}