body {
    box-sizing: border-box;
}
.gradient-bg {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.card-shadow {
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.animate-fade-in {
    animation: fadeIn 0.5s ease-in;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.settings-tab-btn {
    color: #6b7280;
    background-color: transparent;
}
.settings-tab-btn:hover {
    background-color: #f3f4f6;
    color: #374151;
}
.settings-tab-btn.active {
    background-color: #dbeafe;
    color: #1d4ed8;
    font-weight: 600;
}
.settings-content {
    min-height: 500px;
}
/* สไตล์สำหรับ Profile Dropdown */
.dropdown-menu {
  display: none;
  transition: opacity 0.2s ease-out, transform 0.2s ease-out;
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

.dropdown-menu.show {
  display: block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}