/* Side Navigation Styles */
:root {
  --side-nav-width: 40px;
  --side-nav-expanded-width: 150px;
  --side-nav-bg: rgba(22, 25, 34, 0.8);
  --side-nav-active-color: var(--accent);
  --side-nav-hover-color: var(--white);
  --side-nav-transition: all 0.3s ease;
}

/* Side Navigation Container */
.side-navigation {
  position: fixed;
  right: 20px;
  top: 50%;
  z-index: var(--z-above);
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--side-nav-bg);
  border-radius: 30px;
  padding: 15px 5px;
  box-shadow: var(--elevation-2);
  -webkit-backdrop-filter: var(--glass-backdrop-filter);
  backdrop-filter: var(--glass-backdrop-filter);
  border: 1px solid rgba(138, 99, 210, 0.2);
  transition: var(--side-nav-transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-50%) translateX(100px);
}

/* Show side navigation when scrolled */
.side-navigation.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(-50%) translateX(0);
}

/* Navigation Items */
.side-nav-item {
  position: relative;
  margin: 8px 0;
  width: 30px;
  height: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  transition: var(--side-nav-transition);
  cursor: pointer;
}

.side-nav-item::before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--light-gray-1);
  border-radius: 50%;
  transition: var(--side-nav-transition);
}

.side-nav-item:hover::before {
  background: var(--side-nav-hover-color);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  transform: scale(1.2);
}

.side-nav-item.active::before {
  background: var(--side-nav-active-color);
  width: 12px;
  height: 12px;
  box-shadow: 0 0 15px var(--accent);
}

/* Tooltip for navigation items */
.side-nav-item .tooltip {
  position: absolute;
  right: 45px;
  background: var(--side-nav-bg);
  color: var(--white);
  padding: 5px 10px;
  border-radius: 4px;
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: var(--side-nav-transition);
  border: 1px solid rgba(138, 99, 210, 0.3);
}

.side-nav-item:hover .tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

/* Progress indicator */
.side-nav-progress {
  position: absolute;
  left: 50%;
  top: 0;
  width: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  z-index: -1;
  transition: height 0.3s ease;
}

/* Responsive styles */
@media (max-width: 768px) {
  .side-navigation {
    right: 10px;
    padding: 10px 3px;
  }

  .side-nav-item {
    width: 24px;
    height: 24px;
    margin: 6px 0;
  }

  .side-nav-item::before {
    width: 6px;
    height: 6px;
  }

  .side-nav-item.active::before {
    width: 10px;
    height: 10px;
  }
}

@media (max-width: 480px) {
  .side-navigation {
    display: none;
  }
}