/* =====================================================
   SIDEBAR STYLES
   ===================================================== */

.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 900;
  transition: width var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.sidebar-nav {
  flex: 1;
  padding: 8px 0;
}

.nav-section {
  margin-bottom: 4px;
}

.nav-section-title {
  padding: 10px 14px 4px;
  font-size: 10px;
  font-weight: 700;
  color: #6e6e6e;
  text-transform: uppercase;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  opacity: 1;
  transition: opacity var(--transition);
}

.sidebar.collapsed .nav-section-title {
  opacity: 0;
  pointer-events: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  color: #c8c8c8;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
  border-radius: 2px;
  margin: 1px 4px;
  white-space: nowrap;
  overflow: hidden;
  font-size: 13px;
  position: relative;
}

.nav-item svg {
  flex-shrink: 0;
  opacity: 0.8;
}

.nav-item span {
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 1;
  transition: opacity var(--transition);
}

.sidebar.collapsed .nav-item span {
  opacity: 0;
  width: 0;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: white;
}

.nav-item:hover svg { opacity: 1; }

.nav-item.active {
  background: var(--azure-blue);
  color: white;
}

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

/* Tooltip for collapsed mode */
.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 10px;
}

.sidebar.collapsed .nav-item::after {
  content: attr(data-page);
  position: absolute;
  left: 56px;
  background: #323130;
  color: white;
  padding: 6px 10px;
  border-radius: var(--border-radius);
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 999;
  box-shadow: var(--shadow-md);
}

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

/* Sidebar Footer */
.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid #2d2d2e;
}

.sidebar-footer-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--border-radius);
  color: #c8c8c8;
  cursor: pointer;
  font-size: 12px;
  font-family: var(--font);
  transition: var(--transition);
  white-space: nowrap;
  overflow: hidden;
}
.sidebar-footer-btn:hover {
  background: rgba(255,255,255,0.1);
  color: white;
}
.sidebar.collapsed .sidebar-footer-btn span { display: none; }
.sidebar.collapsed .sidebar-footer-btn { justify-content: center; }

/* Scrollbar for sidebar */
.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: #444; border-radius: 2px; }

/* Notification Panel */
.notification-panel {
  position: fixed;
  top: var(--topbar-height);
  right: -360px;
  width: 360px;
  background: white;
  box-shadow: var(--shadow-lg);
  border-left: 1px solid var(--card-border);
  height: calc(100vh - var(--topbar-height));
  z-index: 800;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}
.notification-panel.open { right: 0; }
.notif-header {
  padding: 16px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 15px;
}
.notif-header button {
  background: none; border: none; cursor: pointer; font-size: 16px; color: var(--text-muted);
}
.notif-list { overflow-y: auto; flex: 1; padding: 8px; }
.notif-item {
  padding: 12px;
  border-radius: var(--border-radius);
  margin-bottom: 6px;
  border-left: 3px solid var(--azure-blue);
  background: #f9f9f8;
  font-size: 13px;
}
.notif-item.warning { border-left-color: #d83b01; }
.notif-item.success { border-left-color: var(--success); }
.notif-item-title { font-weight: 600; margin-bottom: 2px; }
.notif-item-time { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* Learning Panel */
.learning-panel {
  position: fixed;
  top: var(--topbar-height);
  right: -420px;
  width: 420px;
  background: white;
  box-shadow: var(--shadow-lg);
  border-left: 1px solid var(--card-border);
  height: calc(100vh - var(--topbar-height));
  z-index: 800;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}
.learning-panel.open { right: 0; }
.learning-header {
  padding: 16px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 15px;
  background: #deecf9;
}
.learning-header button {
  background: none; border: none; cursor: pointer; font-size: 16px; color: var(--text-secondary);
}
.learning-content { overflow-y: auto; flex: 1; padding: 16px; }
.learning-module {
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.learning-module-header {
  padding: 12px 14px;
  background: #f9f9f8;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  font-size: 13px;
}
.learning-module-body {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: none;
}
.learning-module-body.open { display: block; }
.learning-step {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
  align-items: flex-start;
}
.learning-step-num {
  width: 22px;
  height: 22px;
  background: var(--azure-blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}
.module-progress {
  height: 4px;
  background: #f0f0f0;
}
.module-progress-fill {
  height: 100%;
  background: var(--azure-blue);
}