.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  color: #fff;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 20px 16px;
  font-size: 18px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}

.sidebar-logo span { color: var(--color-primary); }

.sidebar-nav {
  flex: 1;
  padding: 12px 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 13px;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: var(--color-sidebar-hover);
  color: #fff;
}

.sidebar-nav a.active {
  background: var(--color-sidebar-active);
  color: #fff;
  border-left-color: #fff;
}

.sidebar-nav a .icon { font-size: 16px; width: 20px; text-align: center; }
.sidebar-nav a .badge { margin-left: auto; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-footer .user-info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.65);
  font-size: 13px;
}

.main-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.top-header {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  flex-shrink: 0;
}

.top-header .page-title {
  font-size: 18px;
  font-weight: 600;
  flex: 1;
}

.top-header .header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.content-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: 24px;
  margin-bottom: 20px;
}

.hidden { display: none !important; }

@media (max-width: 768px) {
  .sidebar { display: none; }
  .page-content { padding: 16px; }
}