/**
 * DAVINCI-MENU.CSS - Navigation menu for DiscoveringDaVinci.com
 * ==============================================================
 * Adapted from uni-menu aesthetic with Renaissance theming
 * Monochrome grid-style navigation with Da Vinci symbolism
 */

/* Menu Container */
.davinci-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--menu-width);
  height: 100vh;
  background:
    linear-gradient(180deg, rgba(18, 22, 29, 0.98) 0%, rgba(12, 15, 20, 0.98) 100%);
  border-right: 1px solid rgba(205, 163, 73, 0.18);
  box-shadow: 18px 0 42px rgba(0, 0, 0, 0.34);
  display: flex;
  flex-direction: column;
  z-index: var(--z-menu);
  transition: transform var(--transition-medium);
}

/* Menu Header */
.menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.2rem 1rem;
  border-bottom: 1px solid rgba(205, 163, 73, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
}

.menu-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-symbol {
  font-size: 1.5rem;
  color: var(--color-accent-primary);
}

.brand-text {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 0.14em;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
  padding: var(--space-xs);
  transition: color var(--transition-fast);
}

.menu-toggle:hover {
  color: var(--color-accent-primary);
}

/* Menu Content */
.menu-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg) 0;
}

/* Navigation Sections */
.nav-section {
  margin-bottom: var(--space-xl);
}

.section-title {
  font-family: var(--font-ui);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  margin-bottom: var(--space-md);
  padding: 0 var(--space-lg);
}

/* Navigation Lists */
.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin-bottom: var(--space-xs);
}

/* Navigation Links */
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: 0 0.85rem;
  padding: 0.85rem 1rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  border-left: 1px solid transparent;
  border-radius: 14px;
  position: relative;
}

.nav-link:hover {
  background: linear-gradient(135deg, rgba(205, 163, 73, 0.12), rgba(255, 255, 255, 0.03));
  color: var(--color-text-primary);
  border-color: rgba(205, 163, 73, 0.2);
}

.nav-link.active {
  background: linear-gradient(135deg, rgba(205, 163, 73, 0.2), rgba(205, 163, 73, 0.08));
  color: #fae8bf;
  border-color: rgba(205, 163, 73, 0.3);
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.nav-link.active::before {
  content: '';
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background-color: var(--color-accent-primary);
  border-radius: 50%;
}

/* Navigation Icons - hidden (text placeholders, not real icons) */
.nav-icon {
  display: none;
}

.nav-label {
  font-size: 0.78rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

/* Menu Footer */
.menu-footer {
  padding: var(--space-lg);
  border-top: 1px solid rgba(205, 163, 73, 0.12);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}

.footer-text {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-style: italic;
  color: var(--color-text-tertiary);
  line-height: 1.7;
  text-align: center;
}

.attribution {
  display: block;
  margin-top: var(--space-xs);
  font-size: 0.65rem;
  color: var(--color-accent-tertiary);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .davinci-menu {
    transform: translateX(-100%);
    width: 320px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
  }
  
  .davinci-menu.open {
    transform: translateX(0);
  }
  
  .menu-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .davinci-menu {
    width: 100%;
  }
  
  .nav-link {
    padding: var(--space-lg);
    font-size: 1rem;
  }
  
  .nav-icon {
    font-size: 1.25rem;
    width: 24px;
  }
  
  .section-title {
    font-size: 0.875rem;
    padding: 0 var(--space-lg);
    margin-bottom: var(--space-lg);
  }
}

/* Menu overlay for mobile */
@media (max-width: 1024px) {
  .menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
  }
  
  .menu-overlay.open {
    opacity: 1;
    visibility: visible;
  }
}

/* Menu Animation Enhancement */
.nav-link {
  position: relative;
  overflow: hidden;
}

.nav-link::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
  transform: translateX(-100%);
  transition: transform var(--transition-medium);
}

.nav-link:hover::after {
  transform: translateX(100%);
}

/* Scrollbar Styling */
.menu-content::-webkit-scrollbar {
  width: 4px;
}

.menu-content::-webkit-scrollbar-track {
  background: var(--color-surface);
}

.menu-content::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 2px;
}

.menu-content::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-tertiary);
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
  .nav-link::after {
    display: none;
  }
}

/* Focus states */
.nav-link:focus {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

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

/* Featured Navigation Item */
.nav-item.featured .nav-link.highlight {
  background: linear-gradient(135deg, rgba(205, 163, 73, 0.2), rgba(205, 163, 73, 0.08));
  color: var(--color-accent-primary);
  position: relative;
  border-color: rgba(205, 163, 73, 0.28);
}

.nav-item.featured .nav-link.highlight:hover {
  background: linear-gradient(135deg, rgba(205, 163, 73, 0.28), rgba(205, 163, 73, 0.12));
}

[data-theme="dark"] .nav-item.featured .nav-link.highlight {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(139, 90, 43, 0.1));
}

[data-theme="dark"] .nav-item.featured .nav-link.highlight:hover {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.25), rgba(139, 90, 43, 0.15));
}

.nav-badge {
  position: absolute;
  right: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-accent-primary);
  color: var(--color-background);
  font-size: 0.6rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 2px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

@keyframes pulse-badge {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ── Theme Toggle ─────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-md);
  background: var(--color-hover);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--border-radius);
  color: var(--color-text-secondary);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-active);
  color: var(--color-text-primary);
  border-color: var(--color-accent-primary);
}

.theme-toggle-icon {
  font-size: 1rem;
  line-height: 1;
}