/* ═══════════════════════════════════════════════════════════
   RIS - Rezept Index System
   Sidebar Navigation
   ═══════════════════════════════════════════════════════════ */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--bg-border);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: transform var(--transition-base);
}

/* Logo Bereich */
.sidebar-logo {
  padding: var(--space-2xl) var(--space-xl);
  border-bottom: 1px solid var(--bg-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  text-align: center;
}

.sidebar-logo-image {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0;
  display: block;
}

.sidebar-logo-title {
  font-size: var(--font-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--accent);
  letter-spacing: 0.05em;
  margin: 0;
  padding: 0;
  display: block;
}

.sidebar-logo-subtitle {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-normal);
  margin: 0;
  padding: 0;
  display: block;
}

/* Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--space-2xl) 0;
  overflow-y: auto;
}

.sidebar-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: 0 var(--space-lg);
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: var(--font-base);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  border-left: 3px solid transparent;
}

.sidebar-nav-item:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.sidebar-nav-item.active {
  background: var(--accent-glow);
  color: var(--accent);
  border-left-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

.sidebar-nav-icon {
  font-size: var(--font-lg);
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

/* Footer / Status Bereich */
.sidebar-footer {
  padding: var(--space-xl);
  border-top: 1px solid var(--bg-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.sidebar-status-badge {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  font-size: var(--font-sm);
  color: var(--text-secondary);
}

.sidebar-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease-in-out infinite;
}

.sidebar-version-badge {
  justify-content: center;
}

.sidebar-version-link {
  background: transparent;
  border: 1px solid rgba(34, 197, 94, 0.5);
  border-radius: var(--radius-sm);
  color: #4ade80;
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--font-sm);
  padding: 6px 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.25);
  transition: all var(--transition-fast);
}

.sidebar-version-link:hover {
  box-shadow: 0 0 18px rgba(34, 197, 94, 0.45);
  color: #bbf7d0;
}

/* Mobile: Hamburger Toggle */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--space-lg);
  left: var(--space-lg);
  z-index: calc(var(--z-sidebar) + 1);
  width: 40px;
  height: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: var(--font-xl);
}

.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: calc(var(--z-sidebar) - 1);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .sidebar-toggle {
    display: flex;
  }
  
  .sidebar-overlay.visible {
    display: block;
  }
}

/* Pulse Animation für Status-Dot */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}