/*
 * Terminal43 Code - Sidebar Component
 * Context-aware sidebar with navigation, progress, and widgets
 */

/* ============================================
   SIDEBAR CONTAINER
   ============================================ */

.app-sidebar {
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow: hidden;
  z-index: 100;
}

/* ============================================
   SIDEBAR HEADER (Logo + User)
   ============================================ */

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-bottom: 16px;
}

.sidebar-logo img {
  height: 36px;
  width: auto;
}

.sidebar-logo-text {
  font-size: 1.125rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* User mini-card */
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  background: var(--bg-subtle);
  text-decoration: none;
  transition: all 0.2s ease;
}

.sidebar-user:hover {
  background: var(--primary-light);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}

.sidebar-user-info {
  flex: 1;
  min-width: 0;
}

.sidebar-user-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-level {
  font-size: 0.6875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.sidebar-user-level .xp-bar {
  flex: 1;
  height: 3px;
  background: var(--bg-subtle);
  border-radius: 2px;
  overflow: hidden;
}

.sidebar-user-level .xp-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 2px;
}

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 0;

  /* Thin scrollbar */
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

/* Section group */
.sidebar-section {
  margin-bottom: 4px;
}

.sidebar-section-title {
  padding: 12px 20px 6px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* Navigation item */
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
  position: relative;
}

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

.sidebar-item.active {
  background: var(--primary-light);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
}

.sidebar-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  opacity: 0.7;
}

.sidebar-item.active svg {
  opacity: 1;
}

.sidebar-item-text {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-item-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
}

/* Divider */
.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 8px 16px;
}

/* ============================================
   SIDEBAR: COURSE CONTEXT
   Shows module/chapter list when inside a course
   ============================================ */

.sidebar-back-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: all 0.15s ease;
}

.sidebar-back-link:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.sidebar-back-link svg {
  width: 16px;
  height: 16px;
}

.sidebar-course-title {
  padding: 16px 20px 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.sidebar-course-progress {
  padding: 0 20px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-course-progress-bar {
  flex: 1;
  height: 6px;
  background: var(--bg-subtle);
  border-radius: 3px;
  overflow: hidden;
}

.sidebar-course-progress-fill {
  height: 100%;
  background: var(--success-gradient);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.sidebar-course-progress-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Module/chapter list */
.sidebar-module {
  border-bottom: 1px solid var(--border);
}

.sidebar-module:last-child {
  border-bottom: none;
}

.sidebar-module-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
}

.sidebar-module-header:hover {
  background: var(--bg-subtle);
}

.sidebar-module-number {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--bg-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.sidebar-module-header.completed .sidebar-module-number {
  background: var(--success-light);
  color: var(--success);
}

.sidebar-module-header.active .sidebar-module-number {
  background: var(--primary-gradient);
  color: white;
}

.sidebar-module-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-module-chevron {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.sidebar-module.open .sidebar-module-chevron {
  transform: rotate(90deg);
}

/* Lesson items inside module */
.sidebar-module-lessons {
  display: none;
  padding: 4px 0;
}

.sidebar-module.open .sidebar-module-lessons {
  display: block;
}

.sidebar-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px 8px 52px;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s;
}

.sidebar-lesson:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.sidebar-lesson.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.sidebar-lesson-status {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-lesson.completed .sidebar-lesson-status {
  background: var(--success);
  border-color: var(--success);
  color: white;
}

.sidebar-lesson.active .sidebar-lesson-status {
  border-color: var(--primary);
  background: var(--primary-light);
}

.sidebar-lesson-status svg {
  width: 10px;
  height: 10px;
}

.sidebar-lesson-title {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-lesson-type {
  font-size: 0.6875rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ============================================
   SIDEBAR WIDGETS (Bottom area)
   ============================================ */

.sidebar-widgets {
  border-top: 1px solid var(--border);
  padding: 12px 16px;
  flex-shrink: 0;
}

/* In-progress courses widget */
.sidebar-progress-widget {
  margin-bottom: 12px;
}

.sidebar-progress-widget-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.sidebar-progress-course {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background 0.15s;
  margin-bottom: 4px;
}

.sidebar-progress-course:hover {
  background: var(--bg-subtle);
}

.sidebar-progress-course-info {
  flex: 1;
  min-width: 0;
}

.sidebar-progress-course-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-progress-course-bar {
  height: 4px;
  background: var(--bg-subtle);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 4px;
}

.sidebar-progress-course-fill {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: 2px;
}

.sidebar-progress-course-pct {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* Streak widget */
.sidebar-streak {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  background: var(--accent-light);
  text-decoration: none;
}

.sidebar-streak-fire {
  font-size: 1.25rem;
}

.sidebar-streak-info {
  flex: 1;
}

.sidebar-streak-count {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
}

.sidebar-streak-label {
  font-size: 0.6875rem;
  color: var(--text-secondary);
}

/* ============================================
   COLLAPSED STATE
   ============================================ */

.layout-collapsed .sidebar-logo-text,
.layout-collapsed .sidebar-user-info,
.layout-collapsed .sidebar-section-title,
.layout-collapsed .sidebar-item-text,
.layout-collapsed .sidebar-item-badge,
.layout-collapsed .sidebar-widgets,
.layout-collapsed .sidebar-course-title,
.layout-collapsed .sidebar-course-progress,
.layout-collapsed .sidebar-module-title,
.layout-collapsed .sidebar-module-chevron,
.layout-collapsed .sidebar-module-lessons,
.layout-collapsed .sidebar-back-link span {
  display: none;
}

.layout-collapsed .sidebar-item {
  justify-content: center;
  padding: 12px;
  border-left: none;
}

.layout-collapsed .sidebar-user {
  justify-content: center;
  padding: 8px;
}

.layout-collapsed .sidebar-header {
  padding: 12px 8px;
}

.layout-collapsed .sidebar-logo {
  justify-content: center;
}

/* Show tooltips in collapsed state */
.layout-collapsed .sidebar-item {
  position: relative;
}

.layout-collapsed .sidebar-item::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  padding: 6px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 1000;
}

.layout-collapsed .sidebar-item:hover::after {
  opacity: 1;
}

/* Expand on hover: restore all hidden text */
.layout-collapsed .app-sidebar:hover .sidebar-logo-text,
.layout-collapsed .app-sidebar:hover .sidebar-user-info,
.layout-collapsed .app-sidebar:hover .sidebar-section-title,
.layout-collapsed .app-sidebar:hover .sidebar-item-text,
.layout-collapsed .app-sidebar:hover .sidebar-item-badge,
.layout-collapsed .app-sidebar:hover .sidebar-widgets,
.layout-collapsed .app-sidebar:hover .sidebar-course-title,
.layout-collapsed .app-sidebar:hover .sidebar-course-progress,
.layout-collapsed .app-sidebar:hover .sidebar-module-title,
.layout-collapsed .app-sidebar:hover .sidebar-module-chevron,
.layout-collapsed .app-sidebar:hover .sidebar-module-lessons,
.layout-collapsed .app-sidebar:hover .sidebar-back-link span {
  display: revert;
}

.layout-collapsed .app-sidebar:hover .sidebar-item {
  justify-content: flex-start;
  padding: 10px 16px;
}

.layout-collapsed .app-sidebar:hover .sidebar-user {
  justify-content: flex-start;
  padding: 10px 12px;
}

.layout-collapsed .app-sidebar:hover .sidebar-header {
  padding: 16px;
}

.layout-collapsed .app-sidebar:hover .sidebar-logo {
  justify-content: flex-start;
}

/* Hide tooltips when expanded on hover */
.layout-collapsed .app-sidebar:hover .sidebar-item::after {
  display: none;
}

/* ============================================
   ADMIN SIDEBAR VARIANT
   ============================================ */

.layout-admin .sidebar-item.admin-link {
  color: var(--accent);
}

.layout-admin .sidebar-item.admin-link.active {
  background: var(--accent-light);
  color: var(--accent);
  border-left-color: var(--accent);
}