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

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-fixed);
  backdrop-filter: blur(14px);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-lg);
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--container-padding);
  background: linear-gradient(90deg, rgba(245, 222, 179, 0.85) 0%, rgba(201, 154, 96, 0.72) 100%);
  color: var(--color-secondary);
  border-bottom: 1px solid rgba(139, 69, 19, 0.18);
}

.top-bar__left {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.top-bar a,
.top-bar button {
  color: inherit;
}

body[data-theme="dark"] .top-bar {
  background: linear-gradient(90deg, rgba(57, 40, 30, 0.94) 0%, rgba(40, 25, 18, 0.92) 100%);
  color: rgba(245, 235, 222, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

body[data-theme="dark"] .language-toggle,
body[data-theme="dark"] .theme-toggle {
  background-color: rgba(245, 233, 220, 0.16);
  border-color: rgba(255, 255, 255, 0.18);
  color: inherit;
}

body[data-theme="dark"] .language-toggle:hover,
body[data-theme="dark"] .language-toggle:focus,
body[data-theme="dark"] .theme-toggle:hover,
body[data-theme="dark"] .theme-toggle:focus {
  background-color: rgba(245, 233, 220, 0.32);
  border-color: rgba(255, 255, 255, 0.32);
}

body[data-theme="dark"] .language-toggle [data-language-option].is-active {
  background: rgba(245, 233, 220, 0.42);
  color: #2c1a12;
}

.utility-link {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
}

.utility-link:hover,
.utility-link:focus {
  text-decoration: underline;
}

.language-toggle,
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: rgba(255, 255, 255, 0.35);
  border: 1px solid rgba(139, 69, 19, 0.15);
  border-radius: var(--radius-full);
  color: var(--color-secondary);
  cursor: pointer;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.language-toggle:hover,
.language-toggle:focus,
.theme-toggle:hover,
.theme-toggle:focus {
  background-color: rgba(255, 255, 255, 0.65);
  border-color: rgba(139, 69, 19, 0.35);
  box-shadow: var(--shadow-sm);
}

.language-toggle__label {
  font-weight: var(--font-weight-semibold);
}

.language-toggle [data-language-option] {
  padding: 0 var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.language-toggle [data-language-option].is-active {
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-primary-dark);
}

.language-toggle__divider {
  opacity: 0.65;
}

.theme-toggle__icon::before {
  content: "🌙";
  font-size: 1.05rem;
}

body[data-theme="dark"] .theme-toggle__icon::before {
  content: "☀️";
}

.navbar {
  position: relative;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid rgba(139, 69, 19, 0.1);
  transition: background var(--transition-base), border-color var(--transition-base);
}

body[data-theme="dark"] .navbar {
  background: rgba(37, 26, 19, 0.94);
  border-color: rgba(255, 255, 255, 0.08);
}

.navbar-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: var(--spacing-xl);
}

.navbar-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-dark);
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.navbar-logo:hover,
.navbar-logo:focus {
  color: var(--color-primary);
  transform: translateY(-2px);
}

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

.nav-item {
  position: relative;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-dark-gray);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

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

.nav-link--button {
  background: none;
  border: none;
  cursor: pointer;
}

.nav-link--cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-radius: var(--radius-full);
  padding: var(--spacing-sm) var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.nav-link--cta:hover,
.nav-link--cta:focus {
  color: var(--color-white);
  box-shadow: var(--shadow-xl);
}

.mega-menu {
  position: absolute;
  left: 0;
  top: calc(100% + var(--spacing-md));
  display: none;
  grid-template-columns: repeat(3, minmax(200px, 240px));
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.97);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(139, 69, 19, 0.08);
  min-width: 600px;
  z-index: var(--z-dropdown);
}

body[data-theme="dark"] .mega-menu {
  background: rgba(45, 32, 24, 0.96);
  border-color: rgba(255, 255, 255, 0.08);
}

.nav-item--open .mega-menu {
  display: grid;
  animation: fadeIn var(--transition-base);
}

.mega-menu__heading {
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-dark);
  margin-bottom: var(--spacing-sm);
}

.mega-menu__list {
  list-style: none;
  display: grid;
  gap: var(--spacing-sm);
}

.mega-menu__link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-dark-gray);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.mega-menu__link:hover,
.mega-menu__link:focus {
  color: var(--color-primary);
  transform: translateX(4px);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(139, 69, 19, 0.25);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-toggle__bar {
  height: 3px;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

body[data-theme="dark"] .menu-toggle__bar {
  background-color: rgba(245, 233, 220, 0.9);
}

.menu-toggle.is-active .menu-toggle__bar:nth-of-type(1) {
  transform: translateY(9px) rotate(45deg);
}

.menu-toggle.is-active .menu-toggle__bar:nth-of-type(2) {
  opacity: 0;
}

.menu-toggle.is-active .menu-toggle__bar:nth-of-type(3) {
  transform: translateY(-9px) rotate(-45deg);
}

@media (max-width: 1024px) {
  .navbar-container {
    gap: var(--spacing-lg);
  }

  .mega-menu {
    grid-template-columns: repeat(2, minmax(200px, 1fr));
    min-width: 480px;
  }
}

@media (max-width: 900px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
    top: 100%;
    right: var(--container-padding);
    left: var(--container-padding);
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(139, 69, 19, 0.1);
    padding: var(--spacing-2xl);
    transform: translateY(-20px);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  body[data-theme="dark"] .nav-menu {
    background: rgba(32, 22, 16, 0.97);
    border-color: rgba(255, 255, 255, 0.1);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-item--has-dropdown .mega-menu {
    position: static;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    min-width: auto;
    padding: var(--spacing-xl);
    margin-top: var(--spacing-md);
    box-shadow: none;
  }

  .nav-link {
    justify-content: space-between;
  }

  .nav-link--cta {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .top-bar {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

  .navbar-container {
    min-height: 72px;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}