/* ==========================================================================
   Firefly Hexo Theme - navbar.css
   Navigation bar styles (ported from Firefly's navbar.css).
   ========================================================================== */

/* --------------------------------------------------------------------------
   Navbar Wrapper — always fixed at top
   -------------------------------------------------------------------------- */

#navbar-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  pointer-events: none;
  padding: 0 1rem;
}

#navbar-wrapper > * {
  pointer-events: auto;
}

#top-row {
  margin-bottom: calc(var(--navbar-height) + 1rem);
}

/* --------------------------------------------------------------------------
   Navbar Container
   -------------------------------------------------------------------------- */

#navbar {
  position: relative;
  width: 100%;
  height: var(--navbar-height);
  z-index: 40;
  transition: all var(--duration-medium);
  pointer-events: auto;
  margin-top: 0;
}

#navbar > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 1.25rem;
  margin: 0 0.5rem;
  background: oklch(0.99 0.005 var(--hue) / 0.45) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  transition: all var(--duration-medium);
  border-radius: 0 0 var(--md-shape-corner-large, 16px) var(--md-shape-corner-large, 16px) !important;
  box-shadow: var(--shadow-sm);
}

.dark #navbar > div,
:root.dark #navbar > div,
html.dark #navbar > div {
  background: oklch(0.20 0.01 var(--hue) / 0.45) !important;
}

/* --------------------------------------------------------------------------
   Transparent Modes
   -------------------------------------------------------------------------- */

/* Full transparent: navbar is see-through with subtle blur */
#navbar[data-transparent-mode="full"] > div {
  background: transparent !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom-color: transparent;
}

/* Semi transparent: frosted glass effect */
#navbar[data-transparent-mode="semi"] > div {
  background: oklch(0.99 0.005 var(--hue) / 0.85);
  backdrop-filter: blur(var(--navbar-glass-blur));
  -webkit-backdrop-filter: blur(var(--navbar-glass-blur));
  border-bottom-color: var(--line-divider);
}

.dark #navbar[data-transparent-mode="semi"] > div,
:root.dark #navbar[data-transparent-mode="semi"] > div,
html.dark #navbar[data-transparent-mode="semi"] > div {
  background: oklch(0.20 0.01 var(--hue) / 0.85);
}

/* --------------------------------------------------------------------------
   Scrolled State
   -------------------------------------------------------------------------- */

#navbar.scrolled > div {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line-divider);
}

/* --------------------------------------------------------------------------
   Banner mode: navbar is transparent when at top of page
   -------------------------------------------------------------------------- */

.enable-banner #navbar:not(.scrolled) > div {
  border-bottom-color: transparent;
}

/* Light mode transparent navbar defaults */
.enable-banner #navbar:not(.scrolled) .navbar-links a {
  color: var(--text-secondary);
}

.enable-banner #navbar:not(.scrolled) .navbar-links a:hover,
.enable-banner #navbar:not(.scrolled) .navbar-links a.active {
  color: var(--primary);
  background: var(--btn-plain-bg-hover);
}

.enable-banner #navbar:not(.scrolled) .btn-plain,
.enable-banner #navbar:not(.scrolled) .navbar-action-btn {
  color: var(--text-secondary);
}

.enable-banner #navbar:not(.scrolled) .btn-plain:hover,
.enable-banner #navbar:not(.scrolled) .navbar-action-btn:hover {
  color: var(--primary);
  background: var(--btn-plain-bg-hover);
}

.enable-banner #navbar:not(.scrolled) .navbar-brand {
  color: var(--text-primary);
}

/* Dark mode transparent navbar overrides */
.dark .enable-banner #navbar:not(.scrolled) .navbar-links a,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-links a {
  color: rgba(255, 255, 255, 0.85);
}

.dark .enable-banner #navbar:not(.scrolled) .navbar-links a:hover,
.dark .enable-banner #navbar:not(.scrolled) .navbar-links a.active,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-links a:hover,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-links a.active {
  color: white;
}

.dark .enable-banner #navbar:not(.scrolled) .btn-plain,
.dark .enable-banner #navbar:not(.scrolled) .navbar-action-btn,
html.dark .enable-banner #navbar:not(.scrolled) .btn-plain,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-action-btn {
  color: rgba(255, 255, 255, 0.85);
}

.dark .enable-banner #navbar:not(.scrolled) .btn-plain:hover,
.dark .enable-banner #navbar:not(.scrolled) .navbar-action-btn:hover,
html.dark .enable-banner #navbar:not(.scrolled) .btn-plain:hover,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-action-btn:hover {
  color: white;
  background: rgba(255, 255, 255, 0.15);
}

.dark .enable-banner #navbar:not(.scrolled) .navbar-brand,
html.dark .enable-banner #navbar:not(.scrolled) .navbar-brand {
  color: white;
}

/* --------------------------------------------------------------------------
   Brand / Logo
   -------------------------------------------------------------------------- */

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.125rem;
  flex-shrink: 0;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--primary);
}

.navbar-brand img,
.navbar-brand-logo {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-small);
  object-fit: cover;
}

.navbar-brand-logo svg {
  width: 100%;
  height: 100%;
}

/* --------------------------------------------------------------------------
   Nav Links
   -------------------------------------------------------------------------- */

.navbar-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-links li {
  margin: 0;
  padding: 0;
}

.navbar-links a {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--md-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  font-size: 0.9375rem;
  font-weight: 500;
  transition:
    background-color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized),
    color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
  text-decoration: none;
  white-space: nowrap;
}

.navbar-links a:hover {
  color: var(--primary);
  background: oklch(0.65 0.18 var(--hue) / 0.08);
}

/* Active state — M3 filled primary container (pill-shaped) */
.navbar-links a.active {
  color: var(--md-sys-color-on-primary-container);
  background: var(--md-sys-color-primary-container);
}
.navbar-links a.active:hover {
  background: oklch(0.82 0.10 var(--hue));
}
.navbar-links a.active .material-symbols-outlined {
  font-variation-settings: 'FILL' 1, 'wght' 600, 'GRAD' 0, 'opsz' 24;
}

/* Dropdown arrow icon inside nav links */
.navbar-links a.has-dropdown::after {
  content: '';
  display: inline-block;
  width: 0.75rem;
  height: 0.75rem;
  margin-left: 0.125rem;
  background-color: currentColor;
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z'/%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M4.22 6.22a.75.75 0 0 1 1.06 0L8 8.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L4.22 7.28a.75.75 0 0 1 0-1.06Z'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  transition: transform var(--duration-fast);
}

/* --------------------------------------------------------------------------
   Right Actions Area
   -------------------------------------------------------------------------- */

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Icon-only buttons inside navbar actions — M3 standard icon button */
.navbar-actions .btn-plain,
.navbar-action-btn {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  border-radius: var(--md-shape-corner-full);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--md-sys-color-on-surface-variant);
  transition:
    background-color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized),
    color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
  font-size: inherit;
  line-height: 1;
}

.navbar-actions .btn-plain:hover,
.navbar-action-btn:hover {
  background: oklch(0.65 0.18 var(--hue) / 0.08);
  color: var(--primary);
}

.navbar-actions .btn-plain svg,
.navbar-actions .btn-plain i,
.navbar-action-btn svg,
.navbar-action-btn i {
  width: 1.25rem;
  height: 1.25rem;
  pointer-events: none;
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Theme Switch Icon
   -------------------------------------------------------------------------- */

.theme-switch-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0.25rem;
  border-radius: var(--md-shape-corner-full);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--md-sys-color-on-surface-variant);
  transition:
    background-color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized),
    color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.theme-switch-btn:hover {
  background: oklch(0.65 0.18 var(--hue) / 0.08);
  color: var(--primary);
}

.theme-switch-btn svg {
  width: 1.25rem;
  height: 1.25rem;
  transition: transform 0.5s ease;
}

.dark .theme-switch-btn svg {
  transform: rotate(180deg);
}

/* Sun/moon icon swap */
.theme-switch-btn .sun-icon,
.theme-switch-btn .moon-icon {
  transition: opacity 0.25s ease, transform 0.25s ease;
}

/* Light mode default: show moon (dark_mode icon → switch to dark), hide sun */
.theme-switch-btn .sun-icon {
  opacity: 0;
  transform: scale(0.5) rotate(90deg);
  position: absolute;
}

.theme-switch-btn .moon-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

/* Dark mode: show sun (light_mode icon → switch to light), hide moon */
.dark .theme-switch-btn .sun-icon {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.dark .theme-switch-btn .moon-icon {
  opacity: 0;
  transform: scale(0.5) rotate(-90deg);
}

/* --------------------------------------------------------------------------
   Mobile Menu Toggle
   -------------------------------------------------------------------------- */

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--md-shape-corner-full);
  color: var(--md-sys-color-on-surface-variant);
  transition:
    background-color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized),
    color var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

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

.mobile-menu-btn:hover {
  background: oklch(0.65 0.18 var(--hue) / 0.08);
  color: var(--primary);
}

.mobile-menu-btn .hamburger-icon {
  font-size: 1.2rem;
}

/* --------------------------------------------------------------------------
   Mobile Menu — Compact Slide-In Panel
   -------------------------------------------------------------------------- */

@media (max-width: 768px) {
  #navbar {
    margin-top: 0;
    padding: 0 0.25rem;
  }
  #navbar > div {
    padding: 0 0.75rem;
  }
  .navbar-links {
    display: none;
  }

  /* Centered popup from  □ tray (respects content width) */
  .navbar-links.open {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(80vw, 340px);
    max-height: 70vh;
    background: var(--card-bg);
    padding: 1.25rem;
    border-radius: var(--md-shape-corner-large);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
    overflow-y: auto;
    z-index: 60;
    animation: popupIn var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
  }
  .navbar-links.open a {
    width: 100%;
    padding: 0.5rem 0.875rem;
    font-size: 0.9375rem;
    border-radius: var(--md-shape-corner-full);
    margin-bottom: 0.125rem;
  }
  .navbar-links.open a.has-dropdown::after {
    margin-left: auto;
  }

  /* Backdrop overlay behind slide-in menu */
  .mobile-menu-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 55;
    animation: fadeIn var(--md-motion-duration-medium) var(--md-motion-easing-standard);
  }
  .mobile-menu-backdrop.open {
    display: block;
  }
}

@keyframes popupIn {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.9); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

#navbar.mobile-nav .navbar-links {
  display: none;
}

#navbar.mobile-nav .navbar-links.open {
  display: flex !important;
  flex-direction: column;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(80vw, 340px);
  max-height: 70vh;
  background: var(--card-bg);
  padding: 1.25rem;
  border-radius: var(--md-shape-corner-large);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
  overflow-y: auto;
  z-index: 60;
  animation: popupIn var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}
#navbar.mobile-nav .navbar-links.open a {
  width: 100%;
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  border-radius: var(--md-shape-corner-full);
  margin-bottom: 0.125rem;
}
#navbar.mobile-nav .navbar-links.open a.has-dropdown::after {
  margin-left: auto;
}

/* --------------------------------------------------------------------------
   Dropdown Menus
   -------------------------------------------------------------------------- */

.navbar-dropdown {
  position: relative;
}

.navbar-dropdown .dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.navbar-dropdown .dropdown-arrow {
  font-size: 1rem;
  transition: transform var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.navbar-dropdown:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.navbar-dropdown .dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 140px;
  background: var(--card-bg);
  border-radius: var(--md-shape-corner-medium);
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  padding: 0.375rem;
  z-index: 50;
  animation: dropdownIn var(--md-motion-duration-medium) var(--md-motion-easing-emphasized);
}

.navbar-dropdown:hover .dropdown-menu {
  display: block;
}

.navbar-dropdown .dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--md-shape-corner-full);
  font-size: 0.875rem;
  white-space: nowrap;
  color: var(--text-secondary);
  transition: all var(--md-motion-duration-short) var(--md-motion-easing-standard);
  text-decoration: none;
}

.navbar-dropdown .dropdown-item:hover {
  background: var(--md-sys-color-surface-variant);
  color: var(--text-primary);
}

.navbar-dropdown .dropdown-item .material-symbols-outlined {
  font-size: 1.1rem;
}

@keyframes dropdownIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-0.5rem); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Mobile dropdown: show inline */
@media (max-width: 768px) {
  .navbar-dropdown .dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0 0 0 0.75rem;
    margin-top: 0.25rem;
    animation: none;
    min-width: auto;
  }
  .navbar-dropdown:hover .dropdown-menu {
    display: none;
  }
  .navbar-dropdown.open .dropdown-menu {
    display: block;
  }
}

/* --------------------------------------------------------------------------
   Search button in navbar
   -------------------------------------------------------------------------- */

.navbar-search-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--md-shape-corner-full);
  background: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  border: none;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  transition:
    background-color var(--md-motion-duration-short) var(--md-motion-easing-standard),
    color var(--md-motion-duration-short) var(--md-motion-easing-standard);
}

.navbar-search-btn:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.navbar-search-btn svg {
  width: 1rem;
  height: 1rem;
}

.navbar-search-btn kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.125rem 0.375rem;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  border-radius: var(--radius-small);
  background: var(--card-bg);
  color: var(--text-tertiary);
}

/* --------------------------------------------------------------------------
   Wallpaper transparent navbar
   -------------------------------------------------------------------------- */

.wallpaper-transparent #navbar > div {
  background: var(--card-bg-transparent) !important;
}

.wallpaper-transparent #navbar.scrolled > div {
  backdrop-filter: blur(calc(var(--navbar-glass-blur) * 2));
  -webkit-backdrop-filter: blur(calc(var(--navbar-glass-blur) * 2));
}

/* --------------------------------------------------------------------------
   Navbar inner max-width constraint
   -------------------------------------------------------------------------- */

#navbar > div > .navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--page-width);
  margin: 0 auto;
  height: 100%;
}