body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f5f7;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background: #1f2937;
  color: white;
  padding-bottom: 20px;
}

.sidebar-header {
  padding: 20px;
  font-size: 22px;
  font-weight: bold;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.menu-list {
  list-style: none;
  margin: 0;
  padding-left: 12px;
}

.menu-list li {
  margin-top: 4px;
}

.menu-list a,
.menu-group {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 10px;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

.menu-list a:hover,
.menu-group:hover {
  background: rgba(255,255,255,0.1);
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: white;
  border-bottom: 1px solid #ddd;
}

.content-area {
  padding: 24px;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.profile-dropdown {
  position: relative;
}

.profile-button,
.login-button {
  border: none;
  background: #2563eb;
  color: white;
  padding: 10px 14px;
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
}

.profile-menu {
  position: absolute;
  top: 34px;
  right: 0;
  min-width: 180px;
  background: white;
  border: 1px solid #ddd;
  border-radius: 8px;
  display: none;
  overflow: hidden;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.profile-menu a {
  display: block;
  padding: 12px;
  text-decoration: none;
  color: #111827;
}

.profile-menu a:hover {
  background: #f3f4f6;
}

.profile-dropdown:hover .profile-menu {
  display: block;
}