.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md);
}

.page {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-2xl);
}

.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-header h1 {
  margin-bottom: var(--spacing-xs);
}

.page-header p {
  color: var(--text-secondary);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.grid { display: grid; gap: var(--spacing-md); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-sm { font-size: 0.85rem; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Sidebar Navigation */
#nav-root {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  z-index: 100;
}

#app {
  margin-left: var(--sidebar-width);
}

.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-brand {
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.sidebar-brand span {
  color: var(--accent);
}

.sidebar-nav {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 10px var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-decoration: none;
}

.nav-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-dim);
  font-weight: 600;
}

.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: var(--spacing-sm) var(--spacing-md);
}

.sidebar-footer {
  padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
  border-top: 1px solid var(--border);
}

.sidebar-icon-row {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-bottom: 8px;
}

.sidebar-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.sidebar-icon-btn svg {
  width: 16px;
  height: 16px;
}

.sidebar-icon-btn:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

.sidebar-user-section {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  padding: 4px 0 0;
}

.sidebar-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: -0.5px;
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.sidebar-user-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.2;
}

.sidebar-user-role {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.2;
}

/* Power/sign-out icon in the icon row */
.sidebar-power-btn:hover {
  color: var(--error) !important;
  background: rgba(239, 68, 68, 0.12) !important;
  border-color: rgba(239, 68, 68, 0.3);
}

/* Responsive */
@media (min-width: 1024px) {
  .container { max-width: 1400px; padding-left: var(--spacing-xl); padding-right: var(--spacing-xl); }
}

@media (max-width: 767px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  #nav-root { width: 100%; height: var(--nav-height); position: sticky; top: 0; }
  #app { margin-left: 0; }
  .sidebar {
    width: 100%;
    height: var(--nav-height);
    flex-direction: row;
    align-items: center;
    border-right: none;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
  }
  .sidebar::-webkit-scrollbar { display: none; }
  #nav-root {
    position: sticky;
  }
  #nav-root::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 20px;
    background: linear-gradient(to right, transparent, var(--bg-secondary));
    pointer-events: none;
    z-index: 101;
  }
  .sidebar-brand { padding: 0 var(--spacing-md); white-space: nowrap; }
  .sidebar-nav { flex-direction: row; padding: 0 var(--spacing-lg) 0 var(--spacing-xs); gap: 0; }
  .nav-link { padding: 12px var(--spacing-sm); font-size: 0.8rem; white-space: nowrap; min-height: 44px; }
  .nav-link svg { display: none; }
  .sidebar-divider { display: none; }
  .sidebar-footer {
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 0 var(--spacing-xs);
    margin-top: 0;
    gap: 0;
  }
  .sidebar-footer .sidebar-icon-row {
    display: flex;
    flex-direction: row;
    gap: 2px;
  }
  .sidebar-footer .sidebar-icon-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 10px;
  }
  .sidebar-footer .sidebar-icon-btn svg {
    width: 18px;
    height: 18px;
  }
  .sidebar-footer .sidebar-user-section { display: none; }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}