.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: linear-gradient(180deg, rgba(15, 15, 26, 0.98) 0%, rgba(15, 15, 26, 0.85) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
    gap: 12px;
    min-height: 56px;
}

.header-logo {
    cursor: pointer;
    flex-shrink: 0;
}

.header-logo .logo-img {
    width: 36px;
    height: 36px;
    filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.5));
}

.header-discount {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.header-discount:empty {
    display: none;
}

.header-discount-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(34, 197, 94, 0.05));
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 20px;
}

.header-discount-badge .discount-icon {
    font-size: 16px;
}

.header-discount-badge .discount-text {
    font-size: 13px;
    font-weight: 600;
    color: #22c55e;
}

.header-discount-badge .discount-time {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
    margin-left: 4px;
}

.header-user {
    cursor: pointer;
    flex-shrink: 0;
}

.user-avatar-small {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(59, 130, 246, 0.2));
    border: 2px solid rgba(139, 92, 246, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: all 0.2s ease;
}

.user-avatar-small:hover {
    border-color: rgba(139, 92, 246, 0.6);
    transform: scale(1.05);
}

.user-avatar-small svg {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.6);
}

.user-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
EOF # Add header-user CSS styles