/* ============================================================
   AGENCY OS — Sidebar Navigation
   Collapsible sidebar with professional icons
   ============================================================ */

/* ── Sidebar Container ── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  z-index: var(--z-sidebar);
  transition: width var(--transition-base);
  overflow: hidden;
}

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

/* ── Sidebar Header ── */
.sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 64px;
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
  white-space: nowrap;
}

.sidebar__logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-primary-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: var(--weight-bold);
  font-size: var(--text-md);
  flex-shrink: 0;
}

.sidebar__logo-text {
  font-family: var(--font-heading);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: #FFFFFF;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.sidebar-collapsed .sidebar__logo-text {
  opacity: 0;
  width: 0;
}

.sidebar__toggle {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--text-sidebar);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}
.sidebar__toggle:hover {
  background: var(--bg-sidebar-hover);
  color: #fff;
}

.sidebar-collapsed .sidebar__toggle {
  transform: rotate(180deg);
}

/* ── Navigation ── */
.sidebar__nav {
  flex: 1;
  padding: var(--space-3) var(--space-3);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar__nav-label {
  font-size: 10px;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(201, 214, 226, 0.4);
  padding: var(--space-4) var(--space-3) var(--space-2);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-fast);
}

.sidebar-collapsed .sidebar__nav-label {
  opacity: 0;
  height: 0;
  padding: 0;
  overflow: hidden;
}

.sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-sidebar);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  margin-bottom: 2px;
  position: relative;
  overflow: hidden;
}

.sidebar__nav-item:hover {
  background: var(--bg-sidebar-hover);
  color: #fff;
}

.sidebar__nav-item.active {
  background: var(--bg-sidebar-active);
  color: var(--brand-primary);
}

.sidebar__nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--brand-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.sidebar__nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--text-base);
}

.sidebar__nav-text {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.sidebar-collapsed .sidebar__nav-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

.sidebar__nav-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--radius-full);
  background: var(--brand-danger);
  color: #fff;
  font-size: 10px;
  font-weight: var(--weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}

.sidebar-collapsed .sidebar__nav-badge {
  opacity: 0;
  width: 0;
  min-width: 0;
  padding: 0;
  overflow: hidden;
}

/* ── Sidebar Divider ── */
.sidebar__divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: var(--space-2) var(--space-3);
}

/* ── Sidebar Footer / User Profile ── */
.sidebar__footer {
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
}

.sidebar__user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--brand-accent), var(--brand-accent-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--weight-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.sidebar__user-info {
  overflow: hidden;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.sidebar-collapsed .sidebar__user-info {
  opacity: 0;
  width: 0;
}

.sidebar__user-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__user-role {
  font-size: var(--text-xs);
  color: var(--text-sidebar);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Mobile Overlay ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: calc(var(--z-sidebar) - 1);
  animation: backdropEnter var(--transition-fast) forwards;
}
.sidebar-overlay.active { display: block; }

/* ── Mobile Menu Toggle ── */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  box-shadow: var(--shadow-md);
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-sidebar) + 1);
  cursor: pointer;
  color: var(--text-primary);
  font-size: var(--text-lg);
}

/* ── Tooltip for collapsed state ── */
.sidebar-collapsed .sidebar__nav-item {
  position: relative;
}

.sidebar__nav-item .sidebar__tooltip {
  display: none;
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 10px;
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-tooltip);
  pointer-events: none;
}

.sidebar-collapsed .sidebar__nav-item:hover .sidebar__tooltip {
  display: block;
  animation: fadeIn var(--transition-fast) forwards;
}