/* Sidebar Styles */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 80px;
  height: 100vh;
  background: rgba(0, 29, 57, 0.95);
  backdrop-filter: blur(10px);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1000;
  transition: all var(--transition-normal);
}

.sidebar-logo {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border-color);
  width: 100%;
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.logo-icon {
  font-size: 1.4rem;
  color: var(--accent-primary);
  text-shadow: 0 0 10px rgba(123, 189, 232, 0.5);
  transition: 0.7s ease-in-out;
}

.logo-icon:hover {
  transform: scale(2.2);
  text-shadow: 0 0 20px rgba(123, 189, 232, 0.8);
}

.sidebar-nav {
  list-style: none;
  width: 100%;
  flex: 1;
  padding: var(--spacing-md) 0;
}

.sidebar-nav li {
  margin-bottom: 2.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 56px;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  transition: all var(--transition-fast);
  border-radius: 8px;
  margin: 0 var(--spacing-sm);
}

.nav-item:hover {
  color: var(--accent-primary);
  background-color: rgba(123, 189, 232, 0.1);
}

.nav-item.active {
  color: var(--accent-primary);
  background-color: rgba(123, 189, 232, 0.15);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background-color: var(--accent-primary);
  border-radius: 2px;
}

.nav-icon {
  font-size: 1.25rem;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-icon {
  transform: scale(1.1);
}

/* Tooltip */
.nav-item::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + var(--spacing-md));
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 1001;
}

.nav-item::before {
  content: '';
  position: absolute;
  left: calc(100% + 2px);
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 8px 6px 0;
  border-color: transparent var(--bg-secondary) transparent transparent;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
  z-index: 1001;
}

.nav-item:hover::after,
.nav-item:hover::before {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(4px);
}

/* Active state overrides for tooltip arrow */
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background-color: var(--accent-primary);
  border-radius: 2px;
  opacity: 1;
  visibility: visible;
  border: none;
}

.nav-item.active:hover::before {
  content: '';
  position: absolute;
  left: calc(100% + 2px);
  top: 50%;
  transform: translateY(-50%) translateX(4px);
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 6px 8px 6px 0;
  border-color: transparent var(--bg-secondary) transparent transparent;
  background-color: transparent;
  border-radius: 0;
}